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Graefe's Archive for Clinical and Experimental Ophthalmology
Published in: Graefe's Archive for Clinical and Experimental Ophthalmology 4/2020

01-04-2020 | Vitrectomy | Retinal Disorders

Preoperative aniseikonia is a prognostic factor for postoperative stereopsis in patients with unilateral epiretinal membrane

Authors: Fumiki Okamoto, Shohei Morikawa, Yoshimi Sugiura, Sujin Hoshi, Takahiro Hiraoka, Tetsuro Oshika

Published in: Graefe's Archive for Clinical and Experimental Ophthalmology | Issue 4/2020

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Abstract

Purpose

To investigate stereopsis and other visual functions in patients with unilateral epiretinal membrane (ERM) and to identify vision-related parameters affecting stereopsis.

Methods

This prospective study included 63 consecutive patients who were scheduled to undergo vitrectomy for unilateral idiopathic ERM. We examined stereopsis (Titmus Stereo Test, TST; TNO stereotest, TNO), best-corrected visual acuity (BCVA), letter contrast sensitivity, severity of metamorphopsia, and degree of aniseikonia preoperatively and 6 months postoperatively.

Results

Preoperatively, we observed significant correlation between TST scores and other vision-related parameters except severity of metamorphopsia and between TNO score and all the vision-related parameters. Multiple regression analysis showed that preoperative TST and TNO scores were significantly associated with the degree of aniseikonia (both P < 0.01). ERM surgery significantly improved stereopsis, BCVA, contrast sensitivity, and metamorphopsia, but not aniseikonia. Postoperatively, TST was significantly associated with BCVA, and TNO showed association with BCVA and aniseikonia. Postoperative TST and TNO scores showed significant correlation with preoperative aniseikonia (P < 0.005 and P < 0.001, respectively).

Conclusions

Impairment of stereopsis in patients with unilateral ERM was considered to be due to retinally induced aniseikonia. Aniseikonia did not improve by surgery, and preoperative aniseikonia can be a prognostic factor for postoperative stereopsis.
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Metadata
Title
Preoperative aniseikonia is a prognostic factor for postoperative stereopsis in patients with unilateral epiretinal membrane
Authors
Fumiki Okamoto
Shohei Morikawa
Yoshimi Sugiura
Sujin Hoshi
Takahiro Hiraoka
Tetsuro Oshika
Publication date
01-04-2020
Publisher
Springer Berlin Heidelberg
Keyword
Vitrectomy
Published in
Graefe's Archive for Clinical and Experimental Ophthalmology / Issue 4/2020
Print ISSN: 0721-832X
Electronic ISSN: 1435-702X
DOI
https://doi.org/10.1007/s00417-020-04625-8

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