FIELD: medicine, ophthalmology.
SUBSTANCE: invention can be used for intraocular vision correction in cases when crystalline lens is displaced relative to eye optic axis, i.e. when fibres of crystalline lens Zinn zonule are weakened in one of sectors (stretched or torn), and crystalline lens equator in region of weakened zonule does not reach eye optic axis (ectopia of I-II degree). Through small tunnel access concentrically to point in which eye optic axis crosses crystalline lens front capsule, anterior capsulorexis is performed. Content of capsule sac is removed. Into capsule sac elastic mono-block intraocular lens (IOL) with support elements of S-shaped form is implanted. After introduction of IOL into capsule sac it is installed with longitudinal axis along vector of crystalline lens displacement. 1 mm long linear cut along capsule sac equator is performed. Place of the cut is determined visually by place of intersection of lens support element with crystalline lens equator when IOL is superposed on cornea and projected on crystalline lens equator plane, superposing optical centres of IOL and cornea and superposing longitudinal axis of lens with vector of crystalline lens displacement. After making the cut, IOL is rotated in sac equator plane counterclockwise until distal end of lower support element reaches the cut on equator. Then said support element is introduced into the cut and moved behind sac until IOL optic part is installed into central position.
EFFECT: reduction of post-operation complications due to reduction of traumaticity and minimising number of manipulations in capsule sac, achieving high vision acuity.
3 cl, 1 ex
Authors
Dates
2009-02-10—Published
2007-07-09—Filed