Нарушения аккомодации и вергенции как причина астенопии после лазерных рефракционных операций

Abstract

Purpose. To evaluate reasons and frequency of asthenopia after refractive surgery. Methods. This study prospectively evaluated 40 eyes of 20 patients. Accommodative amplitude and facility, positive and negative relative accommodation, binocular vision, near point of convergence, heterophoria measurement, AC/A, and accommodative lag were assessed before and 1 month after surgery. This study also evaluates retrospectively 200 eyes of 100 patients within 1 year after surgery. Results. There was no significant impact upon accommodation in prospective group. Asthenopia was found in 7 % of patients in 1 month after surgery and in 1 % in 1 year. It was related with convergence insufficiency in 4 %, convergence excess in 2 % and accommodative insufficiency in 1 %. Conclusions. Refractive surgery does not seem to cause asthenopia. Most problem in fact is already present prior to surgery. Patients with such non-strabismic binocular dysfunction as convergence insufficiency, convergence excess, accommodative insufficiency are in high risk of asthenopia. Preoperative assessment of refractive surgery patients should include a full binocular examination. Key words: refractive surgery; asthenopia; non-strabismic binocular dysfunction; convergence insufficiency; convergence excess; accommodative insufficiency Страница источника: 78-81 Виртуальная выставка КАТАЛОГ Продукции Каталог Продукция Производители Поставщики ОРГАНИЗАЦИИ Офтальмологические клиники, производители и поставщики оборудования