PRESBYOPIA SURGERY, ILLUSTRATION
Treatment of presbyopia by scleral expansion (refractive surgery) : scleral incisions. Technics of scleral expansion relies on the controversial theory that the loss of accomodation of presbyopia is not linked to the loss elasticity of the eye lens, but to the lack of space. In fact, the diameter of the eye lens increases naturally with years, so that they would not be enough space to curve and accommodate (theory of Schachar, 1995). Enlarge the diameter of the sclera would provide the eye lens the space it is lacking. Two technics of scleral expansion are used : scleral incisions (Laser reversal of presbyopia and Anterior ciliary sclerotomy) and strips of scleral expansion. Scleral incisions : eight incisions in triangle are made in the sclera. This increases the capacity of expansion of the sclera and restore the accomodation. These incisions are undertaken either mecanically (Anterior ciliary sclerotomy), either by infrared laser (Laser reversal of presbyopia, YAG laser). See. images 0351607, 0351707 and 0351807 for the mecanism of accommodation, image 0352807 for the strips of scleral expansion. This image is part of a series on the treatment of presbyopia. See. images 0351507 for the different ways of correction, 0351407 for the different types of glasses, 0352207 and 0352307 for the progressive glasses, 0352407, 0352507, 0352607 and 0352707 for the contact lenses, 0352907, 0443607 and 0443707 for the intra-ocular implants, 0353007, 0353107 and 0353207 for the Presbylasik, 0443507 and 0352807 for the scleral expansion.
Size: 3354px × 3630px
Photo credit: © ZEMEDICAL.COMJACOPIN / BSIP / Alamy / Afripics
License: Licensed
Model Released: No
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