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Morphometric and functional characteristics of accommodative apparatus in patients after laser in situ keratomileusis

Poster Details

First Author: M.Shchadnykh UKRAINE

Co Author(s):    P. Bezditko              

Abstract Details


to study the functional performance of accommodative apparatus and morphometric features of the ciliary body in myopes at different times after laser in situ keratomileusis compared with preoperative data.


The study was conducted on the basis of the Ophthalmic branch of Kharkiv State Klinical Hospital and Department of Ophthalmology Kharkiv National Medical University.


In research took part 62 patients in age from 21 to 35 years with myopia weak and moderate. Patients had a refractive, axial and mixed myopia. Those with manifest tropia, previous squint surgery, amblyopia, or absent or impaired binocularity were excluded. All patients were determined visual acuity at distance and near, refraction, reserves accommodation, amplitude of accommodation (AA), the accommodative convergence per unit of accommodation (AC/A) ratio, A-scan, ultrasound biomicroscopy in pre - and postoperative period. Refraction, accommodation and morphometric indices of the ciliary body were made after 1, 6, 9 and 12 months after surgery.


In the postoperative period there was a statistically significant increase in accommodative reserves, AA and reduction of AK/A index. The maximum shift in performance was in patients with refractive myopia, which are not used additional correction for near, less in patients with axial and mixed myopia, without reading glasses usage, minimal changes were observed in patients who used contact lenses. Indicators thickness of the ciliary muscle correlated with the obtained functional results. Within 1 year in 50 patients indicators of accommodative function approached the average age ones. In 4 patients, the rates were less than 50% of middle-age data.


The best conditions for postoperative accommodative function recovery have patients with refractive myopia who wear contact lenses, those refractive myops with glasses need more time for restoration and patients with axial and mixed myopia have the least favorable conditions.

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