Contact lens product

Abstract

Disclosed is a contact lens product, which comprises a packaging box, a sealing layer, a contact lens, and a preservation solution. The packaging box is provided with an accommodating recess body and a handheld piece body connected to the accommodating recess body. The accommodating recess body comprises a bottom wall and an annular sidewall that connects the handheld piece body and the bottom wall. The sealing layer seals an opening of the accommodating recess body, such that the sealing layer and the accommodating recess body jointly enclose to form a closed space, the closed space having a volume of 1.4 ml to 2.0 ml. The contact lens and the preservation solution are located inside of the closed space, and the contact lens is completely immersed within the preservation solution and is not exposed to air. The volume of the preservation solution is 75% to 90% the volume of the closed space. Hence, the contact lens is completely immersed within the preservation solution and is not exposed to a bubble, hence effectively preventing the contact lens from dehydration or deformation.

Description

FIELD OF THE DISCLOSURE The present disclosure relates to a contact lens, and more particularly to a contact lens product. BACKGROUND OF THE DISCLOSURE In a conventional contact lens product, when a contact lens and a preservation solution are sealed in a package box, the contact lens and a bubble coexist in the package box. As a result, a portion of the contact lens is susceptible to being exposed to the bubble (e.g., the bubble being located on an inner side of the contact lens), causing the portion of the contact lens to undergo dehydration and deformation. In view of the above, the inventor believes the aforementioned drawbacks are improvable and, after devoting considerable research and applying scientific principles, has proposed the present disclosure, which has a reasonable design and effectively addresses the aforementioned drawbacks. SUMMARY OF THE DISCLOSURE An objective of embodiments of the present disclosure is to provide a contact lens product for effectively improving on the issues associated with conventional contact lens product. One embodiment of the present disclosure provides a contact lens product, characterized by comprising: a package box including an accommodating recess body and a handheld piece that is connected to the accommodating recess body, wherein the accommodating recess body includes: an annular sidewall that has one end connected to the handheld piece and defining an opening; and a bottom wall connected to another end of the annular sidewall and defining a first central axis; a sealing layer sealing the opening of the accommodating recess body, such that the sealing layer and the accommodating recess body jointly form a closed space having a volume that is within a range from 1.4 mL to 2.0 mL; and a contact lens and a preservation solution both located in the closed space, wherein the contact lens has an inner surface, an outer surface being opposite to the inner surface, and a distal edge that is connected to the inner surface and the outer surface, and wherein a volume of the preservation solution is within a range from 75% to 90% of the volume of the closed space; wherein, when the contact lens product is in a first horizontal position and the first central axis is perpendicular to a horizontal plane, a liquid surface of the preservation solution is curved and has a top end that does not reach the opening, a bubble is formed above the liquid surface of the preservation solution, and the contact lens is entirely submerged in the preservation solution and is not exposed to the bubble; wherein, when the contact lens product is flipped from the first horizontal position along a rotation direction to an upright position, and the first central axis is parallel to the horizontal plane, the distal edge of the contact lens partially abuts against a portion of the sealing layer adjacent to the opening, and the outer surface of the contact lens abuts against the bottom wall and a portion of the annular sidewall adjacent to the opening, such that the contact lens is entirely submerged in the preservation solution and is not exposed to the bubble; and wherein, when the contact lens product is flipped from the upright position along the rotation direction to a second horizontal position, and the first central axis is perpendicular to the horizontal plane, the distal edge of the contact lens abuts against the sealing layer, such that the contact lens is entirely submerged in the preservation solution and is not exposed to the bubble. Optionally, the bottom wall is conical, and the first central axis passes through an apex of the bottom wall, wherein, when the contact lens product is at the upright position, the outer surface of the contact lens and the bottom wall are in point contact. Optionally, when the contact lens product is at the first horizontal position, the bottom wall and the horizontal plane define a slanting angle therebetween that is not greater than 20 degrees. Optionally, the slanting angle is further defined as being within a range from 5 degrees to 10 degrees. Optionally, the annular sidewall includes: a transversal segment being annular and connected to the handheld piece, wherein the transversal segment has an annular protrusion defining the opening, and the sealing layer is fixed to the annular protrusion; and an erect segment connected between the transversal segment and the bottom wall, wherein, when the contact lens product is at the upright position, the outer surface of the contact lens abuts against the bottom wall and a junction of the transversal segment and the erect segment. Optionally, when the contact lens product is at the first horizontal position, the erect segment and the horizontal plane define a tension adjustment angle therebetween that is within a range from 60 degrees to 90 degrees. Optionally, the tension adjustment angle is further defined as being within a range from 70 degrees to 80 degrees. Optionally, when the contact lens product is at the upright position, the contact lens has a height of less than 14.0 mm along a direction perpendicular to the horizontal plane. Optionally, the contact lens defines a second central axis, wherein, when the contact lens product is at the first horizontal position, the second central axis overlaps with the first central axis, wherein, when the contact lens product is at the upright position, the second central axis and the horizontal plane define an angle that is within a range from 15 degrees to 30 degrees therebetween, and wherein, when the contact lens product is at the second horizontal position, the second central axis is perpendicular to the horizontal plane. Optionally, when the contact lens product is at the upright position, the liquid surface of the preservation solution has a height value along a direction perpendicular to the horizontal plane, and the height value is less than a diameter of the contact lens. Another embodiment of the present disclosure provides a contact lens product, characterized by comprising: a package box including an accommodating recess body and a handheld piece that is connected to the accommodating recess body, wherein the accommodating recess body includes: an annular sidewall that has one end connected to the handheld piece and defining an opening; and a bottom wall connected to another end of the annular sidewall and defining a first central axis; a sealing layer sealing the opening of the accommodating recess body, such that the sealing layer and the accommodating recess body jointly form a closed space having a volume that is within a range from 1.4 mL to 2.0 mL; and a contact lens and a preservation solution located in the closed space, wherein the contact lens has an inner surface, an outer surface being opposite to the inner surface, and a distal edge that is connected to the inner surface and the outer surface, and wherein a volume of the preservation solution is within a range from 75% to 90% of the volume of the closed space; wherein, when the contact lens product is in a first horizontal position and the first central axis is perpendicular to a horizontal plane, a liquid surface of the preservation solution is curved and has a top end that does not reach the opening, a bubble is formed above the liquid surface of the preservation solution, and the contact lens is entirely submerged in the preservation solution and is not exposed to the bubble. Optionally, when the contact lens product is at the first horizontal position, the bottom wall and the horizontal plane define a slanting angle therebetween that is not greater than 20 degrees. Optionally, the slanting angle is further defined as being within a range from 5 degrees to 10 degrees. Optionally, the annular sidewall includes: a transversal segment being annular and connected to the handheld piece, wherein the transversal segment has an annular protrusion defining the opening, and the sealing layer is fixed to the annular protrusion; and an erect segment connected between the transversal segment and the bottom wall, wherein, when the contact lens product is at the first horizontal position, the erect segment and the horizontal plane define a tension adjustment angle therebetween that is within a range from 60 degrees to 90 degrees. Optionally, the tension adjustment angle is further defined as being within a range from 70 degrees to 80 degrees. Optionally, the bottom wall is conical, the first central axis passes through an apex of the bottom wall, and the contact lens defines a second central axis, wherein, when the contact lens product is at the first horizontal position, the second central axis overlaps with the first central axis. Yet another embodiment of the present disclosure provides a contact lens product, characterized by comprising: a package box including an accommodating recess body and a handheld piece that is connected to the accommodating recess body, wherein the accommodating recess body includes: an annular sidewall that has one end connected to the handheld piece and defining an opening; and a bottom wall connected to another end of the annular sidewall and defining a first central axis; a sealing layer sealing the opening of the accommodating recess body, such that the sealing layer and the accommodating recess body jointly form a closed space having a volume that is within a range from 1.4 mL to 2.0 mL; and a contact lens and a preservation solution both located in the closed space, wherein the contact lens has an inner surface, an outer surface being opposite to the inner surface, and a distal edge that is connected to the inner surface and the outer surface, and wherein a volume of the preservation solution is within a range from 75% to 90% of the volume of the closed space; wherein, when the contact lens product is in an upright position, and the first central axis is parallel to a horizontal plane, a bubble is formed above a liquid surface of the preservation solution, the distal edge of the contact lens partially abuts against a portion of the sealing layer adjacent to the opening, and the outer surface of the contact lens abuts against the bottom wall and a portion of the annular sidewall adjacent to the opening, such that the contact lens is entirely submerged in the preservation solution and is not exposed to the bubble. Optionally, the annular sidewall includes: a transversal segment being annular and connected to the handheld piece, wherein the transversal segment has an annular protrusion defining the opening, and the sealing layer is fixed to the annular protrusion; and an erect segment connected between the transversal segment and the bottom wall, wherein, when the contact lens product is at the upright position, the outer surface of the contact lens abuts against the bottom wall and a junction of the transversal segment and the erect segment. Optionally, when the contact lens product is at the upright position, the contact lens has a height of less than 14.0 mm along a direction perpendicular to the horizontal plane. Optionally, the bottom wall is conical, and the first central axis passes through an apex of the bottom wall, wherein, when the contact lens product is at the upright position, the outer surface of the contact lens and the bottom wall are in point contact. Therefore, in the contact lens product disclosed in embodiments of the present disclosure, by configuring the closed space formed by the package box and the sealing layer to cooperate with the preservation solution (e.g., the volume of the preservation solution must be within a range from 75% to 90% of the volume of the closed space), the contact lens is able to satisfy corresponding conditions at each of the first horizontal position, the upright position, and the second horizontal position, such that the contact lens is entirely submerged in the preservation solution and is not exposed to the bubble, thereby effectively preventing the contact lens from undergoing dehydration and deformation. For further understanding of the features and technical content of the present disclosure, please refer to the following detailed description and drawings related to the present disclosure. However, the description and drawings are provided for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view of a contact lens product according to an embodiment of the present disclosure. FIG. 2 is a schematic perspective view showing the contact lens product of FIG. 1 after being unsealed. FIG. 3 is a schematic perspective view of a package box according to the embodiment of the present disclosure. FIG. 4 is a schematic cross-sectional view taken along cross-sectional line IV-IV of FIG. 3. FIG. 5 is a schematic cross-sectional view taken along cross-sectional line V-V of FIG. 1. FIG. 6 is a schematic cross-sectional view showing the contact lens product of FIG. 5 rotated to an upright position. FIG. 7 is a schematic cross-sectional view showing the contact lens product of FIG. 6 rotated to a second horizontal position. FIG. 8 is a schematic view showing two contact lens products stacked on each other according to the embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS The following description is provided by way of specific embodiments to explain the implementation of the "contact lens product" disclosed by the present disclosure. Those skilled in the art can understand the advantages and effects of the present disclosure from the content disclosed herein. The present disclosure can be implemented or applied through other different specific embodiments, and various details in this specification can be modified and changed in different ways based on different viewpoints and applications without departing from the concept of the present disclosure. In addition, the drawings of the present disclosure are merely schematic illustrations and are not drawn to actual dimensions, as noted in advance. The following embodiments will further describe the relevant technical content of the present disclosure in detail, but the disclosed content is not intended to limit the scope of the present disclosure. It should be understood that, although terms such as "first," "second," and "third" can be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" as used herein should, depending on the actual situation, include any one or a combination of more than one of the associated listed items. Please refer to FIG. 1 to FIG. 8, a first embodiment of the present disclosure is provided. As shown in FIG. 1 to FIG. 5, the present embodiment provides a contact lens product 100, which includes a package box 1, a sealing layer 2 fixed to the package box 1, a preservation solution 3 located in the package box 1, and a contact lens 4 that is submerged in the preservation solution 3. The contact lens 4 has an inner surface 41 and an outer surface 42 being opposite to the inner surface 41, and a distal edge 43 that is connected to the inner surface 41 and the outer surface 42. The inner surface 41 is concave and is configured to contact a human eye, and the outer surface 42 is convex. It should be noted that, when the contact lens product 100 is placed in different positions, the relative positional relationships between the contact lens 4 and other components are also different from each other. For ease of description, the following description introduces the relative positional relationships between the components with the contact lens product 100 placed in a first horizontal position P1 (e.g., FIG. 5). As shown in FIG. 4 and FIG. 5, the package box 1 in the present embodiment is integrally formed as a single one-piece plastic structure, and the package box 1 includes an accommodating recess body 11 and a handheld piece 12 that is connected to the accommodating recess body 11. The structure of the handheld piece 12 can be adjusted according to practical requirements, and the present disclosure is not limited by the present embodiment. In the present embodiment, the accommodating recess body 11 contains the preservation solution 3 and the contact lens 4, and the accommodating recess body 11 includes an annular sidewall 111 and a bottom wall 112. One end of the annular sidewall 111 is connected to the handheld piece 12 and defines an opening 1114, and the bottom wall 112 is connected to another end of the annular sidewall 111 and defines a first central axis L1. The annular sidewall 111 and the bottom wall 112 are preferably implemented in the following manner to facilitate preservation of the contact lens 4 in the contact lens product 100, but the present disclosure is not limited thereto. For example, in other embodiments of the present disclosure not shown in the drawings, the specific structures of the annular sidewall 111 and / or the bottom wall 112 can also be adjusted according to practical requirements. In the present embodiment, the annular sidewall 111 includes a transversal segment 1111 that is circular and annular, and an erect segment 1112 that is connected between the transversal segment 1111 and the bottom wall 112. An outer edge of the transversal segment 1111 is connected to the handheld piece 12, an inner edge of the transversal segment 1111 is connected to the erect segment 1112, and the transversal segment 1111 and the erect segment 1112 preferably define an obtuse angle therebetween. Furthermore, the transversal segment 1111 has an annular protrusion 1113 (arranged on a side thereof away from the bottom wall 112), and the annular protrusion 1113 defines an opening 1114. In addition, the bottom wall 112 is conical, and the first central axis L1 passes through an apex of the bottom wall 112. Specifically, when the contact lens product 100 is at the first horizontal position P1, and the first central axis L1 is perpendicular to a horizontal plane, the erect segment 1112 and the horizontal plane define a tension adjustment angle o1112 therebetween that is within a range from 60 degrees to 90 degrees (e.g., the tension adjustment angle o1112 being preferably within a range from 70 degrees to 80 degrees), and the bottom wall 112 and the horizontal plane define a slanting angle o112 therebetween that is not greater than 20 degrees (e.g., the slanting angle o112 being preferably within a range from 5 degrees to 10 degrees). Accordingly, when the contact lens product 100 is at the first horizontal position P1, the structural design of the erect segment 1112 (e.g., the specific value range of the tension adjustment angle o1112) is able to effectively reduce the surface tension of the liquid surface 31 of the preservation solution 3 (e.g., reducing the height of the top end 32 of the liquid surface 31 relative to the bottom wall 112), thereby preventing the top end 32 of the liquid surface 31 from exceeding the opening 1114 and contacting the sealing layer 2. Furthermore, when the contact lens product 100 is at the first horizontal position P1, the conical design of the bottom wall 112 enables the outer surface 42 of the contact lens 4 to be accurately positioned by the bottom wall 112 (e.g., a second central axis L2 defined by the contact lens 4 being overlapped with the first central axis L1, or the second central axis L2 and the first central axis L1 form an angle therebetween that is less than 10 degrees), but the present disclosure is not limited thereto. The sealing layer 2 seals the opening 1114 of the accommodating recess body 11, such that the sealing layer 2 and the accommodating recess body 11 jointly form a closed space S, and the contact lens 4 and the preservation solution 3 are located in the closed space S. In the present embodiment, the sealing layer 2 is fixed to the annular protrusion 1113, and the aforementioned fixing manner is preferably achieved by thermally fusing the annular protrusion 1113, but the present disclosure is not limited thereto. Based on the above, when the contact lens product 100 is at the first horizontal position P1, and the first central axis L1 is perpendicular to the horizontal plane, the liquid surface 31 of the preservation solution 3 is curved and the top end 32 does not reach the opening 1114, a bubble B is formed above the liquid surface 31 of the preservation solution 3, and the contact lens 4 is entirely submerged in the preservation solution 3 and is not exposed to the bubble B, thereby preventing the contact lens 4 from undergoing dehydration and deformation. Specifically, in order for the contact lens product 100 to satisfy the corresponding conditions at the first horizontal position P1, the closed space S must have a volume being within a range from 1.4 mL to 2.0 mL, and the volume of the preservation solution 3 must be within a range from 75% to 90% of the volume of the closed space S. In other words, any contact lens product that does not satisfy the aforementioned conditions for the preservation solution 3 and the closed space S will have a contact lens 4 that is susceptible to being partially exposed to air, and is therefore different from the contact lens product 100 provided by the present embodiment. The above description describes the components and corresponding conditions of the contact lens product 100 when the contact lens product 100 is at the first horizontal position P1, and the following description introduces the corresponding conditions of the contact lens product 100 when the contact lens product 100 is at other positions, but the present disclosure is not limited thereto. As shown in FIG. 5 and FIG. 6, when the contact lens product 100 is flipped from the first horizontal position P1 along a rotation direction R (e.g., a counterclockwise direction in FIG. 6) to an upright position P2, and the first central axis L1 is parallel to the horizontal plane, the distal edge 43 of the contact lens 4 partially abuts against a portion of the sealing layer 2 adjacent to the opening 1114, and the outer surface 42 of the contact lens 4 abuts against the bottom wall 112 and a portion of the annular sidewall 111 adjacent to the opening 1114, such that the contact lens 4 is entirely submerged in the preservation solution 3 and is not exposed to the bubble B. Specifically, when the contact lens product 100 is at the upright position P2, the outer surface 42 of the contact lens 4 abuts against the bottom wall 112 and a junction of the transversal segment 1111 and the erect segment 1112 (e.g., the outer surface 42 of the contact lens 4 and the conical bottom wall 112 being in point contact), such that the second central axis L2 and the horizontal plane define an angle o therebetween that is within a range from 15 degrees to 30 degrees, the contact lens 4 has a height H4 of less than 14.0 mm along a direction (e.g., a vertical direction) perpendicular to the horizontal plane, and the liquid surface 31 of the preservation solution 3 has a height value H3 along the direction perpendicular to the horizontal plane that is less than a diameter D4 of the contact lens 4. Furthermore, as shown in FIG. 6 and FIG. 7, when the contact lens product 100 is flipped from the upright position P2 along the rotation direction R to a second horizontal position P3, and the first central axis L1 is perpendicular to the horizontal plane, the second central axis L2 is perpendicular to the horizontal plane, and the distal edge 43 of the contact lens 4 abuts against the sealing layer 2, such that the contact lens 4 is entirely submerged in the preservation solution 3 and is not exposed to the bubble B. Based on the above, the contact lens product 100 in the present embodiment configures the closed space S formed by the package box 1 and the sealing layer 2 to cooperate with the preservation solution 3, such that the contact lens 4 is able to satisfy corresponding conditions at each of the first horizontal position P1, the upright position P2, and the second horizontal position P3, thereby realizing complete submersion of the contact lens 4 in the preservation solution 3 without being exposed to the bubble B, and effectively preventing the contact lens 4 from undergoing dehydration and deformation. It should be noted that the contact lens product 100 in the present embodiment is described as satisfying the corresponding conditions at the first horizontal position P1, the upright position P2, and the second horizontal position P3, but the present disclosure is not limited thereto. For example, in other embodiments of the present disclosure not shown in the drawings, the contact lens product 100 can also satisfy only the corresponding conditions when at the first horizontal position P1 or the upright position P2. In addition, as shown in FIG. 8, a plurality of the contact lens products 100 are also able to be stacked on one another through the structural design of the accommodating recess body 11 (e.g., the erect segment 1112 being substantially frustoconical). Specifically, one of the contact lens products 100 at the first horizontal position P1 can be inversely stacked on another one of the contact lens products 100 at the second horizontal position P3. Specifically, in two of the contact lens products 100 stacked on each other, the erect segments 1112 of the two accommodating recess bodies 11 are adjacent to or abut against each other, and the bottom wall 112 of one of the package boxes 1 abuts against the handheld piece 12 of another one of the package boxes 1. Accordingly, the contact lens products 100 are also able to achieve maximum space utilization through the structural design of the accommodating recess body 11. [Beneficial Effects of the Embodiments] In conclusion, in the contact lens product disclosed in the above embodiments of the present disclosure, by configuring the closed space formed by the package box and the sealing layer to cooperate with the preservation solution (e.g., the volume of the preservation solution must be within a range from 75% to 90% of the volume of the closed space), the contact lens is able to satisfy corresponding conditions at each of the first horizontal position, the upright position, and the second horizontal position, such that the contact lens is entirely submerged in the preservation solution and is not exposed to the bubble, thereby effectively preventing the contact lens from undergoing 5 dehydration and deformation. The foregoing description of the exemplary embodiments of the disclosure has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the disclosure to the precise forms disclosed. All equivalent technical changes made using the content of the 10 specification and drawings of the present disclosure are included within the scope of the present disclosure.

Claims

1. A contact lens product, characterized by comprising:a package box including an accommodating recess body and a handheld piece that is connected to the accommodating recess body, wherein the accommodating recess body includes:an annular sidewall that has one end connected to the handheld piece and defining an opening; anda bottom wall connected to another end of the annular sidewall and defining a first central axis;a sealing layer sealing the opening of the accommodating recess body, such that the sealing layer and the accommodating recess body jointly form a closed space having a volume that is within a range from 1.4 mL to 2.0 mL; anda contact lens and a preservation solution both located in the closed space, wherein the contact lens has an inner surface, an outer surface being opposite to the inner surface, and a distal edge that is connected to the inner surface and the outer surface, and wherein a volume of the preservation solution is within a range from 75% to 90% of the volume of the closed space;wherein, when the contact lens product is in a first horizontal position and the first central axis is perpendicular to a horizontal plane, a liquid surface of the preservation solution is curved and has a top end that does not reach the opening, a bubble is formed above the liquid surface of the preservation solution, and the contact lens is entirely submerged in thepreservation solution and is not exposed to the bubble;wherein, when the contact lens product is flipped from the first horizontal position along a rotation direction to an upright position, and the first central axis is parallel to the horizontal plane, the distal edge of the contact lens partially abuts against a portion of the sealing layer adjacent to the opening, and the outer surface of the contact lens abuts against the bottom wall and a portion of the annular sidewall adjacent to the opening, such that the contact lens is entirely submerged in the preservation solution and is not exposed to the bubble; andwherein, when the contact lens product is flipped from the upright position along the rotation direction to a second horizontal position, and the first central axis is perpendicular to the horizontal plane, the distal edge of the contact lens abuts against the sealing layer, such that the contact lens is entirely submerged in the preservation solution and is not exposed to the bubble.

2. The contact lens product according to claim 1, characterized in that the bottom wall is conical, and the first central axis passes through an apex of the bottom wall, wherein, when the contact lens product is at the upright position, the outer surface of the contact lens and the bottom wall are in point contact.

3. The contact lens product according to claim 2, characterized in that, when the contact lens product is at the first horizontal position, the bottom wall and the horizontal plane define a slanting angle therebetween that is notgreater than 20 degrees.

4. The contact lens product according to claim 3, characterized in that the slanting angle is further defined as being within a range from 5 degrees to 10 degrees.

5. The contact lens product according to claim 1, characterized in that the annular sidewall includes:a transversal segment being annular and connected to the handheld piece, wherein the transversal segment has an annular protrusion defining the opening, and the sealing layer is fixed to the annular protrusion; andan erect segment connected between the transversal segment and the bottom wall, wherein, when the contact lens product is at the upright position, the outer surface of the contact lens abuts against the bottom wall and a junction of the transversal segment and the erect segment.

6. The contact lens product according to claim 5, characterized in that, when the contact lens product is at the first horizontal position, the erect segment and the horizontal plane define a tension adjustment angle therebetween that is within a range from 60 degrees to 90 degrees.

7. The contact lens product according to claim 6, characterized in that the tension adjustment angle is further defined as being within a range from 70 degrees to 80 degrees.

8. The contact lens product according to claim 6, characterized in that, when the contact lens product is at the upright position, the contact lens has a height of less than 14.0 mm along a direction perpendicular to the horizontal plane.

9. The contact lens product according to claim 1, characterized in that the contact lens defines a second central axis, wherein, when the contact lens product is at the first horizontal position, the second central axis overlaps with the first central axis, wherein, when the contact lens product is at the upright position, the second central axis and the horizontal plane define an angle that is within a range from 15 degrees to 30 degrees therebetween, and wherein, when the contact lens product is at the second horizontal position, the second central axis is perpendicular to the horizontal plane.

10. The contact lens product according to claim 1, characterized in that, when the contact lens product is at the upright position, the liquid surface of the preservation solution has a height value along a direction perpendicular to the horizontal plane, and the height value is less than a diameter of the contact lens.

11. A contact lens product, characterized by comprising:a package box including an accommodating recess body and a handheld piece that is connected to the accommodating recess body, wherein the accommodating recess body includes:an annular sidewall that has one end connected to the handheldpiece and defining an opening; anda bottom wall connected to another end of the annular sidewall and defining a first central axis;a sealing layer sealing the opening of the accommodating recess body, such that the sealing layer and the accommodating recess body jointly form a closed space having a volume that is within a range from 1.4 mL to 2.0 mL; anda contact lens and a preservation solution located in the closed space, wherein the contact lens has an inner surface, an outer surface being opposite to the inner surface, and a distal edge that is connected to the inner surface and the outer surface, and wherein a volume of the preservation solution is within a range from 75% to 90% of the volume of the closed space;wherein, when the contact lens product is in a first horizontal position and the first central axis is perpendicular to a horizontal plane, a liquid surface of the preservation solution is curved and has a top end that does not reach the opening, a bubble is formed above the liquid surface of the preservation solution, and the contact lens is entirely submerged in the preservation solution and is not exposed to the bubble.

12. The contact lens product according to claim 11, characterized in that, when the contact lens product is at the first horizontal position, the bottom wall and the horizontal plane define a slanting angle therebetween that is not greater than 20 degrees.

13. The contact lens product according to claim 12, characterized in that the slanting angle is further defined as being within a range from 5 degrees to 10 degrees.

14. The contact lens product according to claim 11, characterized in that the annular sidewall includes:a transversal segment being annular and connected to the handheld piece, wherein the transversal segment has an annular protrusion defining the opening, and the sealing layer is fixed to the annular protrusion; andan erect segment connected between the transversal segment and the bottom wall, wherein, when the contact lens product is at the first horizontal position, the erect segment and the horizontal plane define a tension adjustment angle therebetween that is within a range from 60 degrees to 90 degrees.

15. The contact lens product according to claim 14, characterized in that the tension adjustment angle is further defined as being within a range from 70 degrees to 80 degrees.

16. The contact lens product according to claim 11, characterized in that the bottom wall is conical, the first central axis passes through an apex of the bottom wall, and the contact lens defines a second central axis, wherein, when the contact lens product is at the first horizontal position, the second central axis overlaps with the first central axis.

17. A contact lens product, characterized by comprising:a package box including an accommodating recess body and a handheld piece that is connected to the accommodating recess body, wherein the accommodating recess body includes:an annular sidewall that has one end connected to the handheld piece and defining an opening; anda bottom wall connected to another end of the annular sidewall and defining a first central axis;a sealing layer sealing the opening of the accommodating recess body, such that the sealing layer and the accommodating recess body jointly form a closed space having a volume that is within a range from 1.4 mL to 2.0 mL; anda contact lens and a preservation solution both located in the closed space, wherein the contact lens has an inner surface, an outer surface being opposite to the inner surface, and a distal edge that is connected to the inner surface and the outer surface, and wherein a volume of the preservation solution is within a range from 75% to 90% of the volume of the closed space;wherein, when the contact lens product is in an upright position, and the first central axis is parallel to a horizontal plane, a bubble is formed above a liquid surface of the preservation solution, the distal edge of the contact lens partially abuts against a portion of the sealing layer adjacent to the opening, and the outer surface of the contact lens abuts against the bottom wall and a portion of the annular sidewall adjacent to the opening, such that the contact lens is entirely submerged in the preservation solutionand is not exposed to the bubble.

18. The contact lens product according to claim 17, characterized in that the annular sidewall includes:a transversal segment being annular and connected to the handheld piece, wherein the transversal segment has an annular protrusion defining the opening, and the sealing layer is fixed to the annular protrusion; andan erect segment connected between the transversal segment and the bottom wall, wherein, when the contact lens product is at the upright position, the outer surface of the contact lens abuts against the bottom wall and a junction of the transversal segment and the erect segment.

19. The contact lens product according to claim 17, characterized in that, when the contact lens product is at the upright position, the contact lens has a height of less than 14.0 mm along a direction perpendicular to the horizontal plane.

20. The contact lens product according to claim 17, characterized in that the bottom wall is conical, and the first central axis passes through an apex of the bottom wall, wherein, when the contact lens product is at the upright position, the outer surface of the contact lens and the bottom wall are in point contact.

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