Einfluss der operativen Versorgung einer epiretinalen Gliose auf das Binokularsehen und auf die Aniseikonie
by Sebastian Bode-Rosche née Bode
Date of Examination:2025-07-17
Date of issue:2025-07-04
Advisor:Prof. Dr. Michael Schittkowski
Referee:PD Dr. Ingo Fiss
Referee:Prof. Dr. Heidi Hahn
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Abstract
English
Introduction: Patients undergoing peeling surgery for epiretinal membrane occasionally complain of binocular visual disturbances postoperatively. The aim of this study was to record subjective complaints and the correlation to pre- and postoperative objectively measurable parameters regarding binocular vision due to aniseikonia. Methods: In this prospective cohort study, consecutive patients with unilateral epiretinal membrane were included. Preoperative and 3 months postoperative standardized ophthalmologic and strabologic examinations were performed. To be included, all patients had to achieve a visual acuity of at least 0.2 in the affected eye and 0.5 in the fellow eye. In addition, none of the patients were allowed to have unilateral pseudophakia or anisometropia of more than 2.5 dpt. All study participants underwent the New Aniseikonia Test (Awaya test) to test for aniseikonia. Results: A total of 39 patients (21 female, 18 male) with an average age of 72 years were included. Visual acuity increased by 0.05 ± 0.18 in distance vision and 0.07 ± 0.18 in near vision. In the Bagolini test, 87.2% of patients showed a positive test result in distance vision both pre- and postoperatively and 12.8% showed an exclusion. In the near vision Bagolini test, 94.9% constituted a positive result preoperatively and 5.1% showed an exclusion; postoperatively, 97.4% achieved simultaneous vision and 2.6% showed an exclusion. In the Titmus test, 97.4% constituted a positive result preoperatively when looking at the fly, 89.7% a positive result postoperatively and 10.3% a negative Titmus test. Horizontal aniseikonia decreased from 3.72% ± 4.04 preoperatively to 2.54% ± 2.72 postoperatively. Vertical aniseikonia showed a mean value of 5.05% ± 4.72 preoperatively and 3.13% ± 3.29 postoperatively. With regard to the changes in aniseikonia preoperatively versus postoperatively, the significance level for the horizontal measurement was p=0.03 and for the vertical measurement p=0.01. Conclusion: The participants in the study showed the expected improvement in visual acuity 3 months after surgical treatment of epiretinal memrane. Simultaneous vision and stereopsis also improved slightly. The decrease in horizontal and vertical aniseikonia was striking. In monocular surgery, more attention should also be paid to binocular aspects.
Keywords: epiretinal membrane; aniseikonia
