Scleral lenses with fenestration and pocket

Abstract

The invention discloses a scleral lens with a fenestration and a concave pocket. The optical zone of the scleral lens is provided with one fenestration or a plurality of circularly distributed fenestrations; the concave pocket ring on the rear surface of the optical zone Two or more pockets are set in the area, and the pockets are used to capture air bubbles near the window; wherein the window is located on the radially outer side of the ring area of ​​the pocket, and is not located in the transition area of ​​the scleral lens , the transition zone is configured to be positioned above the corneoscleral limbus of the eye when worn. The lenses of the present invention are not attracted to the cornea, can be worn comfortably and maintain clear visual acuity for up to 12 hours.

Description

technical field

[0001] The invention relates to the technical field of ophthalmic optics, in particular to a scleral lens with a window and a pocket. Background technique

[0002] Contact lenses include corneal contact lenses and scleral lenses. Scleral lenses are large-diameter rigid lenses that cover the sclera and the corresponding conjunctiva, with diameters ranging from 14mm to 25mm, which can be further subdivided into mini-sclera lenses (lens diameters 14-18mm) and full-sclera lenses (lens diameters 18-18mm). 25mm). Scleral lenses generally consist of three regions: (1) the optic zone, which straddles the cornea but does not contact it, and is used to correct vision if needed; (2) the transition zone, which connects the optic (3) The landing zone / haptic zone is used to support the lens on the eyeball, and its curvature needs to be as consistent as possible with the sclera curvature.

[0003] Scleral lenses have a space between the inner surface of the lens and the ...

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