Оценка контрастной чувствительности у пациентов после имплантации моно- и бифокальных ИОЛ

Abstract

Purpose. To perform a comparative analysis of contrast sensitivity and glare sensitivity in patients implanted with mono- and bifocal IOLs. Material and methods. 60 patients (60 eyes) were examined: 30 cataract patients who underwent cataract phacoemulsification with bifocal IOL Lentis Comfort implantation; and 30 cataract patients who underwent cataract phacoemulsification with monofocal IOL Acrysof IQ implantation. In the post-operative period the examination of twilight vision and bright light sensitivity was carried out using a Binoptometer 4P visual function analyzer. Results. In patient of group I without flare with a contrast 1:23, the threshold value was achieved in 97.4% of patients, with a contrast 1:5 – in 87.6%; with a contrast 1:2.7 – in 49.2%; with a contrast 1:2 – in 38.3%; with flare and contrast 1:23 – in 90.3%; with flare and contrast 1:5 – in 84.8%; with flare and contrast 1:2.7 – in 41.2%; with flare and contrast 1:2 – in 22.8%. In patients of group II: without flare and with contrast 1:23 – in 98.6%; with a contrast 1:5 – in 90.1%; with a contrast 1:1.27 – in 61.9%, with a contrast – 1:2 – 44.5%; with flare and contrast 1:23 – in 95.6%; with flare and contrast 1:5 – in 86.9%; with flare and contrast 1:2.7 – in 48.7%; with flare and contrast 1:2 – in 40.5% Conclusions. In mesopic conditions IOL Acrysof IQ provides higher visual acuity in low contrast conditions with a slight decrease under flare conditions in comparison with IOL Lentis Comfort. Key words: contrast sensitivity, cataract phacoemulsification, bifocal IOL.