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The role of OCT signal strength in the diagnosis and follow-up of patients with posterior capsular opacification treated with Nd:YAG laser capsulotomy

Poster Details

First Author: M.Vatansever TURKEY

Co Author(s):    E. Dinc   O. Dursun   U. Adiguzel   A. Yilmaz   G. Temel        

Abstract Details


To investigate the relationship between optical coherence tomography (OCT) signal strength (SS) and visual acuity in patients with posterior capsule opacification (PCO) and evaluate the effect of PCO on retinal thickness measurements.


Toros State Hospital, Mersin, Turkey.


Forty-one eyes of 35 patients who were diagnosed with PCO were included in the study. After ophthalmologic examination OCT images were acquired. The assessment was repeated at 1 month after Nd:YAG laser capsulotomy and postoperative values were compared with baseline values.


Mean best corrected visual acuity (BCVA) of the patients was 0.28 ± 0.13 preoperatively and 0.78 ± 0.09 postoperatively (p<0.0001). OCT SS was 6 or less before the laser in all patients. After the laser, OCT SS increased in all patients. Strong positive correlations were observed between BCVA and SS both pre- and postoperatively (p<0.0001 and p=0.01). Central retinal thickness (CRT) value and SS increased significantly postoperatively (p<0.0001 for both).


OCT SS correlates with visual acuity in patients with PCO, and PCO can affect the accuracy of objective data obtained with OCT. OCT SS can provide information about opacity density in addition to that gained through biomicroscopic evaluation. It can also provide more objective data compared to subjective examination findings and help prevent unnecessary procedures. Considering that OCT is a noninvasive, easy, and rapid imaging technique, adding OCT SS as a parameter in the evaluation of patients with PCO may be beneficial.

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