Photo-optical method and retinal photosensitivity analysis in the multimodal study of the vitreous opacities’ treatment effectiveness by YAG-laser vitreolysis

Author: Yuiya Khzardzhan (Russian Federation)

Co-authors: Viktor Fokin, Sergey Balalin, Alexander Balalin

Purpose

To assess the dynamics of the retinal photosensitivity, the best corrected visual acuity (BCVA) and using photo-optical method the dimming intensity index before and after the YAG-laser vitreolysis.

Setting/Venue

S.N. Fedorov NMRC "MNTK "Eye Microsurgery", Volgograd Branch

Methods

A retinal photosensitivity study (MAIA – CenterVue, Italy) was conducted in 69 patients (69 eyes) aged 20 to 88 years before and after YAG-laser vitreolysis using the Ultra Q Reflex system (Ellex Medical, France). The average age is 58.7 ± 1.8 years, 24 men and 45 women.

Results

Both the BCVA (from 0,69 ± 0,04 to 0,75 ± 0,23) and the average photosensitivity of the macula (from 25,5 ± 0,6 to 26,34 ± 0,6 dB) increased 2 months after the last stage of the YAG-laser vitreolysis. The fixation stability didn’t change significantly. The average floaters area decreased from 3,22 ± 0,89 to 0,8 ± 0,25 mm2 (p<0,05). The average value of the dimming intensity index significantly decreased from 59.75 ± 14.17 to 10.02 ± 2.76 (p<0,01).

Conlusions

YAG vitreolysis is a safe and effective treatment of vitreous opacities. The method for quantitative assessing vitreous opacification can be used in diagnosis, monitoring and evaluation of the effectiveness of YAG-laser vitreolysis. The use of the photo-optical method together with microperimetry data extends the possibilities of comprehensive assessment of the effectiveness of YAG-laser vitreolysis.

Financial Disclosure

none