31results about How to "Prevent myopia" patented technology

The utility model belongs to the field of optical display, and particularly relates to a reading system, which comprises a first image source, a second image source, a third image source and a fourth image source, the first concave reflecting mirror is arranged opposite to the first image source; the spectroscope is arranged opposite to the first concave reflector, the light reflected by the first concave reflector enters the spectroscope and is reflected by the spectroscope to be emitted to the exit pupil, and a first image with a first focal plane depth is formed; the second image source emits light rays and is arranged opposite to the spectroscope, and the light rays emitted by the display enter the spectroscope and are reflected by the spectroscope to be emitted out; the second concave reflector is arranged opposite to the spectroscope, the light reflected by the spectroscope enters the second concave reflector, is reflected by the second concave reflector to enter the spectroscope, and is emitted to the exit pupil through the transmission of the spectroscope to form a second image with a second focal plane depth; the first focal plane depth and the second focal plane depth are both greater than 2m.

The utility model provides an educational lighting LED, which comprises an LED body, the LED body comprises a support, a fluorescent glue layer, a pin, a first wafer, a second wafer and a bowl cup, the bowl cup is arranged in the support, the first wafer and the second wafer are arranged in the bowl cup in series and connected with the support, the pin is connected with the support, and the fluorescent glue layer is arranged on the support. The fluorescent glue layer is arranged in the bowl cup in a wrapping manner, and the fluorescent glue layer is a mixture layer formed by combining blue powder, green powder, red powder, infrared fluorescent powder and transparent silica gel; the wavelength of the first wafer is set to be 450 to 455 nm, and the wavelength of the second wafer is set to be 465 to 470 nm; the color rendering index Regt of the LED body; 95; a color saturation index Rgt of the LED body; 95; a color fidelity index Rfgt of the LED body; 90; students are enabled to be more active and more positive in learning, the effective brightness of the light source is high, the students are wider in view and clearer in object watching, and myopia prevention of the students is facilitated.

The invention discloses a far-image screen and an electronic product with the far-image screen, the far-image screen comprises a display screen, a semi-transparent and semi-reflecting layer and a concave reflecting layer, the concave reflecting layer is provided with a light supplementing device used for supplementing light to the semi-transparent and semi-reflecting layer, the light supplementing device comprises a light supplementing light source and a focal length adjusting device, and the focal length adjusting device is used for adjusting the focal length of the light supplementing light source. And the focal length adjusting device is used for controlling the focal length of the light supplementing light source to be consistent with the focal length of the concave reflecting layer. According to the scheme, the light supplementing device is arranged in the far image screen, light supplementing can be conducted on the semi-transparent and semi-reflecting layer, a completely black area does not exist any more, and the situation of myopia caused by the similar shape deprivation phenomenon in the using process of the far image screen is avoided. Meanwhile, the light supplementing device further comprises a focal length adjusting device which can adjust light rays emitted by the light supplementing light source, the focal length of the light rays is made to be the same as the focal length of the picture directly reflected through the concave reflection layer, and therefore the comfort degree of human eyes when the human eyes watch the far image screen is guaranteed.

The invention relates to an immersive blind person experience interactive game system. According to the blind person experience game, game players can feel the influence of vision limitation on life through immersive experience, game data analysis given by a game system is compared with data of task completion conditions through normal vision, the players can feel inconvenience brought by visual impairment more visually, and the experience experience of the blind persons is improved. The visual acuity of players for eyesight protection is stimulated, the players are promoted to take actual actions in daily life, for example, the use of electronic products is reduced, the outdoor activity time is prolonged, and myopia is effectively prevented. As a propaganda and education mode combining entertainment and education, compared with a traditional propaganda and education mode, the game system is more vivid and interesting, and the learning interest and acceptability of the public, especially teenagers can be remarkably improved.

The utility model discloses a study desk associated with myopia prevention and control relates to study desk technical field, including study desk main part and baffle plate, study desk main part upper end face is equipped with baffle plate, baffle plate inner wall is equipped with hydraulic rod, hydraulic rod tail end is equipped with support seat, the front end of support seat is equipped with connecting plate, and the connecting plate is equipped with the baffle plate. According to the learning table, the threaded rod is driven by the micro motor, the sliding block slides relative to the learning table body in the sliding groove through the threaded rod and is used for pushing the fixing support, the supporting plate is arranged on the outer surface of the supporting plate, and the supporting plate is arranged on the outer surface of the supporting plate. The distance control device is used for controlling the distance between a user and the learning table when the user uses the learning table, so that the sitting posture of the user is more correct, the pressure and discomfort of the spine are reduced, the proper distance is conveniently controlled, the phenomenon of myopia caused by too close watching and long-time watching is avoided, and the vision of the user is better protected.

The invention discloses near-vision-preventing health-care liquid and a preparation method thereof. The near-vision-preventing health-care liquid is prepared from the following raw materials in parts by weight: 8-12 parts of cornu bubali, 1-3 parts of borneol, 4-6 parts of xanthophyll, 8-12 parts of radix angelicae sinensis, 8-12 parts of radix paeoniae rubra, 6-10 parts of folium mori, 12-18 parts of semen plantaginis, 8-12 parts of flos chrysanthemi, 12-18 parts of cortex fraxini and 12-18 parts of semen cassiae. According to years of medicine practicing experience and in combination with the theory of traditional Chinese medicine, natural traditional Chinese medicine plants with the effects of clearing liver and improving vision, clearing away heat and toxic materials, promoting blood circulation, dissipating blood stasis and relieving pain, clearing away heat and drying dampness and promoting blood circulation are selected; the traditional Chinese medicine composition can relieve eyestrain, eye dryness, eye acerbity, red eyes, blurred vision, dark circles, ghosting, photophobia, tear against wind, eye discomfort and other symptoms caused by overuse of eyes, the effect is remarkable, the effect taking speed is high, and myopia development is delayed by relieving eyestrain and preventing myopia; in addition, the preparation process is simple, easy to operate and convenient for expanded production.

The intelligent myopia-preventing desk comprises a desk body, stand columns are arranged at the two ends of the upper surface of the desk body, mounting grooves are formed in the corresponding positions of the inner walls of the two stand columns, mounting beams are arranged in the mounting grooves, sliding grooves are formed in the mounting beams, movable blocks are arranged in the sliding grooves in a sliding mode, and the movable blocks are arranged in the sliding grooves in a sliding mode. A connecting rod is arranged at the front end of the movable block, a limiting device is arranged at the end of the connecting rod, the limiting device can be used for limiting the head position of a user, the situation that the distance between the head of the user and a table top is too close is avoided, the eye using distance can be guaranteed, and myopia can be prevented; the height of the limiter can be adjusted, so that the limiter can be conveniently used by people with different heights, and after the limiter is used, the limiter can be folded and stored to avoid occupying the desktop space.

The invention relates to a printing technology capable of protecting eyesight and a printing method thereof, and belongs to the technical field of paper printing. According to the printing technology, raw stock white paper is adopted, and green lines and light yellow color blocks are printed on the raw stock white paper. The invention has the beneficial effects that: 1, the raw stock white paper is adopted, the environmental protection requirement of green printing is responded, the damage of paper fluorescence is reduced, the light is more uniform during writing, and the burden of eyes is reduced; and 2, the green lines are used as visual guidance, so that the writing efficiency can be improved, and visual tension caused by long-time writing can be effectively relieved. And 3, the printing of the yellow solid shading has small stimulation to eyes, and also has the effect of improving attention concentration, so that the writing is more concentrated during writing, visual fatigue caused by distraction is reduced, eyesight is protected, and myopia is prevented.

The utility model provides a self-adaptive dimming circuit and a display device. The self-adaptive dimming circuit comprises a photosensitive module, a master control module and a dimming module. The light sensing module is connected with the main control module and is used for detecting the brightness of ambient light; the main control module is connected with the dimming module and is used for outputting a corresponding control signal to the dimming module according to the brightness of the ambient light; and the dimming module is connected with an LED circuit of the display equipment and is used for adjusting the magnitude of the output current according to the control signal so as to adjust the brightness of the LED circuit. According to the utility model, not only can the use experience be improved, but also myopia caused by long-time watching of an over-bright or over-dark display device by a user can be avoided.

The invention provides a self-adaptive target grabbing sequence determination method, and relates to the technical field of data processing. The method comprises the following steps: segmenting current three-dimensional point cloud data of a target unloading area to generate pose information of a to-be-grabbed object; performing multi-dimensional quantitative evaluation on each to-be-grabbed object based on the pose information to generate a feature score; fusing the feature score with the pose information of the to-be-grabbed object, and constructing a comprehensive state vector at the current moment; inputting the comprehensive state vector into a pre-trained reinforcement learning strategy network to obtain an accumulated return value of each to-be-grabbed object, and selecting the to-be-grabbed object with the maximum accumulated return value as a current grabbed object to be grabbed; and the steps are repeated until the object to be grabbed does not exist in the target unloading area, multi-dimensional physical and geometric characteristics can be comprehensively considered, and therefore the overall efficiency and safety of unloading operation are improved.

The utility model discloses a multifunctional learning chair and relates to the technical field of learning equipment. Comprising a chair seat, a base plate is fixedly mounted on the upper end face of the chair seat, a sponge cushion is fixedly mounted on the upper end face of the base plate, a backrest is fixedly mounted on the side wall of the base plate, a sitting posture corrector is fixedly mounted on the upper end face of the sponge cushion, and fixing blocks are symmetrically and fixedly mounted on the outer wall of the base plate; a first supporting rod is fixedly installed on the upper end face of the fixing block, a handrail is fixedly installed on the upper end face of the first supporting rod, and a second sensor is fixedly installed on the outer wall of the sitting posture corrector. Through the arrangement of the sitting posture corrector, the second sensor, the fixing support and the first sensor, in the using process, the sitting posture of a user can be corrected, through the arrangement of the fixing support, the eyes of the user can be prevented from being too close to a table top, and therefore myopia is prevented, and through the arrangement of the first sensor and the second sensor, the myopia is prevented. And a warning effect can be achieved for a user.

The invention discloses intelligent myopia prevention glasses and belongs to the technical field of myopia prevention. The glasses frame is connected with the glasses frame, the first glasses leg and the second glasses leg are connected to the two sides of the glasses frame, a circuit board groove and a myopia prompting lamp are arranged on the inner wall of the first glasses leg, and a control circuit board is installed in the circuit board groove and seals the circuit board groove through a circuit board groove baffle; an invisible light transmitting and receiving head is installed on the glasses frame, a battery groove used for installing a rechargeable battery is formed in the inner side wall of the second glasses leg, the battery groove is sealed through a battery baffle, and a charging port is further formed in the end of the second glasses leg. Correct reading and writing postures are ensured, eyes are scientifically used, and myopia is prevented.

The utility model discloses a similar solar spectrum light source, which comprises a microcrystal plate, an anti-dazzle film, a diffusion plate, an all-in-one light source plate and a driver which are arranged in sequence, a plurality of patch LED units are arranged on the all-in-one light source plate in an array mode, each patch LED unit comprises a plurality of LED light sources, one LED light source of the LED light sources is a near ultraviolet LED chip, and the other LED light source of the LED light sources is an LED chip. The other LED light source is a white light mixing LED chip, the white light mixing LED chip is a light mixing LED chip formed by a plurality of LED chips with different wave bands, and the dominant wavelength of the near ultraviolet LED chip is 380-420 nm.

The invention discloses a matrix type multi-focus vision rehabilitation training device which comprises a box body, a rectangular groove is formed in the upper end of the box body, a top plate is arranged at the upper end of the box body, the top plate is connected with the box body through a plurality of limiting screws, eyepieces are installed on the front side and the rear side of the box body, a display shell is arranged in the box body, and the display shell is connected with the box body. Display panels are mounted on the front side and the rear side of the display shell; and the moving mechanism is used for moving the displayer shell front and back, the moving mechanism comprises a reciprocating lead screw rotationally connected between the front inner wall and the rear inner wall of the rectangular groove, and the reciprocating lead screw is in threaded connection with a sliding block. In the actual use process of the device, the sensitivity of eyeball focusing and relaxation conversion can be trained and improved by utilizing reciprocating movement of the display part and cooperating with swinging of the display part, so that vision recovery of a trainer can be promoted, myopia can be prevented, in addition, eye muscles can be exercised, the adjusting capacity of the eye muscles is improved, and the training effect is improved. The vision recovery is facilitated.

A posture correcting learning table comprises a base plate assembly and a bearing assembly, one end of the bearing assembly is connected with the base plate assembly, the other end of the bearing assembly is provided with a first hinge part, and a reading panel is provided with a second hinge part and rotationally connected with the first hinge part through a rotating shaft; and the damping assembly is connected between the first hinge part and the second hinge part and limits rotation between the bearing assembly and the reading panel. According to the posture correcting learning table, the reading panel is connected with the base plate assembly through the bearing assembly, the rotary damping assembly is additionally arranged between the bearing assembly and the reading panel, the reading panel can be directly operated to adjust the inclination angle of the reading panel, and the adjusted inclination angle is kept under the action of the damping assembly; an angle more suitable for reading or writing is provided for the user, and then the wrong sitting posture that the upper body inclines forwards or lowers the head is reduced.

The application belongs to the technical field of lighting lamps, and particularly relates to a three-dimensional full-space wireless sliding table lamp with anti-dazzle and eye protection, which comprises a supporting frame, a lifting mechanism, a horizontal adjusting mechanism, a wireless sliding connecting assembly, a balance structure and a bidirectional light-emitting anti-dazzle assembly. A placing seat is fixedly connected to the bottom of the supporting frame, and a first sliding groove is formed in the vertical direction in the middle of the supporting frame. The lifting mechanism comprises an adjusting plate arranged at the end of a fixed cylinder, and a positioning rail is fixedly connected to the outer wall of the adjusting plate. The adjusting plate is clamped on the inner wall of the first sliding groove through the positioning rail. The LED upper lamp plate with a front inclination angle is arranged to effectively supplement the background light of the working environment. The bidirectional light-emitting mode significantly reduces the brightness ratio between the center of the working area and the surrounding environment, reduces the light-dark contrast, relieves the visual fatigue caused by frequent pupil adjustment of the human eye, and prevents myopia from the optical and physical aspects.

The utility model discloses a kind of feathered frame A of badminton, including feathering rod (A2), combination part (4), base (1), feathering rod, combination part, base are by one whole of one-time forming of mould composition, every root of feathering rod (A2) is single independent. The height of feathering rod A2 is 7mm-14mm. The utility model also discloses a kind of feathered frame B of badminton, including feathering rod (B2), combination part (4), base (1), feathering rod, combination part, base are by one whole of one-time forming of mould composition, every root of feathering rod (B2) is single independent. The height of feathering rod B2 is 20mm-24mm. Feathered frame A, feathered frame B can make middle and high grade feather piece with low grade feather and natural defective feather, then make badminton with middle and high grade feather piece.

The present invention discloses a user vision protection supervision method and related equipment, which relates to the field of equipment control, and is mainly used to solve the problem that students currently lack relevant eye protection knowledge or lack self-awareness when reading and writing, and it is difficult for them to maintain good reading and writing habits, resulting in a rapid decline in students' vision and difficulty in maintaining vision. The method includes: obtaining target user feature information; predicting specific pressure monitoring thresholds associated with different desk states of users based on the target user feature information; obtaining the desk pressure of the target user; and supervising the desk behavior of the target user based on the desk pressure of the target user and the specific pressure monitoring threshold.

The invention discloses a near glasses fitting method for myopia prevention and control, and belongs to the field of myopia prevention and control. The problems that read-write glasses obtained according to an existing fitting method are poor in applicability and poor in myopia prevention and control effect are solved. According to the technical scheme, the method comprises the following steps that the accurate diopter of a detected person is obtained through objective optometry and subjective optometry, the initial spherical power is S, the cylindrical power is C, the additional spherical power S1 = 1 / f-1 / F on the basis of the distant optometry is calculated according to the actual habitual eye using distance f and the simulated eye using distance F of a patient, and the additional spherical power S1 = 1 / f-1 / F is calculated according to the actual habitual eye using distance f and the simulated eye using distance F of the patient; calculating the total spherical power SP = S + S1 to obtain the actual gradient AC / A = Y2-Y1 when the positive spherical lens is added to the detected person, further obtaining the additional value P1 = S1 * AC / A of the first prism, calculating the additional value P2 = (2 * BI blurring point-BO blurring point) / 3 of the second prism, and comparing the additional value of the first prism with the additional value of the second prism to obtain the final prism addition degree and the final spherical power; the invention is applied to the visual light industry.

The invention relates to the technical field of myopia-preventing robots, in particular to an intelligent myopia-preventing tablet computer support robot. The robot comprises a robot body provided with a driving motor and a rolling track, a flat plate support arranged at the front end of the robot body, a connecting rod set connected between the flat plate support and the robot body, a main control module arranged at the tail of the robot body and an infrared sensor arranged on the front side of the flat plate support in an extending mode. The tablet support which is lifted and clamped through gravity is arranged at the front end of the robot and used for containing a tablet for students to learn, the connecting rod set driven by the elevation angle adjusting motor is arranged on the rear side of the tablet support, the elevation angle can be remotely adjusted, and the infrared sensor arranged in front of the robot is used for measuring the distance between the robot and a user. When the detection distance is too large or too small, the distance between the robots is moved to prevent myopia, and the ultrasonic sensors arranged behind the robots are used for detecting the plane edges to prevent the robots from falling in the backing process.

The utility model belongs to the display imaging field, and specifically relates to a head-mounted optical system comprising a light source assembly comprising a first light source and a second light source; the first spectroscope is arranged between the first light source and the second light source, and two surfaces of the first spectroscope are respectively opposite to the first light source and the second light source; the reflecting assembly comprises a first reflecting mirror which is arranged opposite to the first spectroscope; the second reflecting mirror is arranged opposite to the first reflecting mirror; the third reflecting mirror is arranged opposite to the second reflecting mirror; light emitted by the first light source is transmitted by the first spectroscope to enter the first reflecting mirror, and is reflected by the first reflecting mirror, the second reflecting mirror and the third reflecting mirror in sequence to be emitted to the exit pupil, so that a first focal plane with a first focal plane depth is formed; light emitted by the second light source is reflected by the first spectroscope, then enters the first reflector, and is emitted to the exit pupil after being reflected by the first reflector, the second reflector and the third reflector in sequence, so that a second focal plane with a second focal plane depth is formed. Through the setting, the use experience is improved.

The utility model belongs to the field of optical display, and particularly relates to a table type optical system, which comprises a first part, a second part and a third part, the first reflecting mirror is arranged opposite to the light source; the second part is arranged opposite to the first part, and the second part comprises a light splitting module which is arranged opposite to the first reflecting mirror; the second reflecting mirror is arranged opposite to the light splitting module, and the second reflecting mirror is provided with a concave surface far away from the light splitting module; light rays emitted by the light source enter the first reflecting mirror, enter the light splitting mirror after being reflected and then are emitted to the second reflecting mirror through reflection of the light splitting module, and the light rays reflected by the second reflecting mirror penetrate through the light splitting module in a transmission mode to form a first image with a preset focal plane depth. The range of the preset focal plane depth is from-infinity mm to-1000 mm and from 1000 mm to + infinity mm. Through the arrangement, interference during watching of the first image is avoided.

The utility model provides a prompt circuit and an earphone cabin, and the prompt circuit comprises a main control circuit, a signal generation circuit, a first sensor, a second sensor, a buzzer, and a gyroscope. The main control circuit is respectively connected with the signal generation circuit, the first sensor, the second sensor, the buzzer and the gyroscope; when the earphone cabin is in a standing state, starting an alarm clock function; under the condition that the user exists in the first range, the main control circuit starts a timer in the alarm clock function, and the timer starts timing; and when the timing of the timer exceeds the first threshold value and the second sensor detects that the time is within the first threshold value, and the user never leaves the first range, the buzzer gives out an alarm sound to prompt the user to leave. According to the technical scheme provided by the invention, whether the user is in the learning state for a long time can be judged, and if the user learns for a long time, the user can be reminded to have a rest through the buzzer, so that the eyes of the user can be protected, and a certain effect of preventing myopia of the user is achieved.

The utility model relates to the technical field of desk, especially a desk with telescopic storage drawer. The utility model provides a desk with telescopic storage drawer, including desk body and storage bin, the inside of desk body is provided with storage bin, still including slide rail, limit stop, guide rail, connecting block, placing box and screw rod, the inside both sides of desk body all are installed with slide rail, the limit stop is jointly and severally slidably arranged in two slide rails, the both sides of limit stop bottom all are fixedly connected with guide rail, the connecting block is slidably arranged on the guide rail, two connecting blocks are jointly and severally fixedly connected with placing box, and the placing box is slidably connected with the limit stop, and the limit stop bottom left side is rotatably provided with screw rod. Through rotating screw rod, drive the connecting block of left side to move down, and the connecting block of right side synchronous sliding along the guide rod, make placing box move down, cooperate with the limit stop, expand the storage space of placing box, realize the maximum storage space, to this end satisfies different use demand.

The invention relates to a posture correction method, system and terminal for preventing and controlling pseudomyopia of teenagers, and the method comprises the following steps: obtaining the position information and image detection information of a preset positioning point on a wearable device; matching a viewing type from a preset object feature database according to the image detection information, wherein the viewing type comprises a paper type and an electronic type; determining body posture information according to the position information of each positioning point under the paper type; when the body posture information does not fall into a preset standard posture range, determining a posture deviation value according to the body posture information and the standard posture range; matching correction strength of the wearable device according to the posture deviation value; and prompting according to the posture deviation value and the correction force. The wearable device can adjust the body posture of the teenager in each scene so as to protect the eyesight.

The utility model relates to the field of desks, in particular to a myopia-preventing sitting posture correcting desk. The myopia-preventing sitting posture correction desk can correct the sitting posture of a student, warn the student at the same time, prevent myopia caused by incorrect sitting posture of the student, reduce the probability of myopia of the student and protect the eyesight of the student. A myopia-preventing sitting posture correcting desk comprises a desk body, a fixed column, a rotating column, an adjusting frame and the like, the fixed column is connected to the front side of the middle of the desk body, the rotating column is rotationally connected to the fixed column, and the adjusting frame is connected to the upper side of the rotating column. According to the utility model, hot air is blown out through the hot air fan, prompt sound is given out through the prompt bell to remind students of incorrect sitting postures, and then the students adjust the sitting postures to be in contact with the support frame, so that the support frame rotates to be turned up, and the trigger column moves to reset, thereby being capable of warning while correcting the sitting postures of the students and preventing myopia caused by the incorrect sitting postures of the students; probability of myopia of students is reduced, and eyesight of students is protected.

The utility model relates to a visual training system, which comprises a non-video display panel, a communication control module is arranged on the non-video display panel, and training lamps controlled by the communication control module to emit light are distributed on the non-video display panel; keys for a user to press are arranged on the key handle, and the arrangement mode of the keys is consistent with the arrangement mode of the training lamps; the communication module is in signal connection with the communication control module, and the central processing unit is in signal connection with the communication module and the keys. According to the visual training system, the central processing unit is used for controlling the training lamps to be turned on, and a person operates the key handles with two hands to turn off the corresponding training lamps, so that eye muscles of the person are sufficiently moved and adjusted, the eye muscles are exercised, fatigue is relieved, the vision is improved, and no harm or side effect exists.

The present invention relates to a desk, and in particular to a student study desk. It is necessary to design a student study desk that can solve the problem of a large number of books piling up on the desk without taking up space. A student study desk includes legs, a book drawer, a table top, a book placement device and a hand support device. The outer bottom of the book drawer is symmetrically fixed with legs, the top of the book drawer is fixed with a table top, the legs are provided with a book placement device for storing books, and the table top is provided with a hand support device for correcting sitting posture. The present invention places the hands on a rubber pad, so that sitting is comfortable, can correct the bad habit of bowing the head and bending over, and effectively prevent myopia and hunchback. The baffle can prevent pens or books from slipping off. People can also place books on the bookshelf to make them clear at a glance and convenient to find books. In this way, a large number of books can be piled up on the desk without taking up space, and the sitting posture is comfortable.

The utility model belongs to the technical field of integrated desks and chairs, and particularly relates to an integrated desk and chair capable of preventing myopia of students, which comprises a base, and the upper surface of the base is fixedly connected with a support cylinder. When the desk is used, the desk top is pulled upwards, the telescopic rods are pulled to the proper height from the supporting cylinders, the adjusting rods are screwed into the corresponding adjusting holes, locking is completed, when a student sits on the chair, the motor is started to drive the threaded rods to rotate, the sliding blocks slide in the guide rails, the sliding blocks drive the chair to be close to the desk top through the supporting frame, and the desk top is locked. The desk and chair can be flexibly adjusted to adapt to the height of a student, the flexible pad abuts against the chest of the student through the mounting plate, the flexible pad can ascend and descend according to ascending and descending of the desk top, the flexible pad is made of a silica gel pad, good comfort is achieved, the student cannot lie on the desk top to write under blocking of the flexible pad, the student is limited front and back through the flexible pad and the chair, and the desk and chair are convenient to use. The problem that the student body is too close to the desk can be prevented, and hunchback and myopia are not easily caused.

The present invention discloses a posterior sclera cross-linking device and a method for using the same, wherein the posterior sclera cross-linking device comprises an air bag, including a contracted state and an expanded state after inflation; a connecting tube, one end of which is connected to the air bag for providing gas to the air bag; an optical fiber, which is arranged along the connecting tube, and the output end of the optical fiber is arranged at the position of the air bag. The present invention has the advantages of easy operation and low damage.