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Fumiki Okamoto, Yoshimi Sugiura, Yoshifumi Okamoto, Takahiro Hiraoka, Tetsuro Oshika; Relationship Between Aniseikonia and Visual Function after Rhegmatogenous Retinal Detachment Surgery. Invest. Ophthalmol. Vis. Sci. 2014;55(13):1082.
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© ARVO (1962-2015); The Authors (2016-present)
To quantify the degree of aniseikonia after successful repair of rhegmatogenous retinal detachment (RD), and to investigate the relationship between aniseikonia and other visual functions as well as clinical factors.
The study included 104 eyes of 104 patients, without any history of ocular disease/surgery and less than 2 dioptors of anisometropia, who had undergone successful retinal reattachment surgery. We examined aniseikonia with New Aniseikonia Test 6 months after surgery. Clinical data were collected, including age, gender, postoperative logarithm of minimum angle of resolution best-corrected visual acuity (logMAR BCVA), severity of metamorphopsia assessed with M-CHARTS, difference of postoperative spherical equivalent between the two eyes, circumferential dimension of retinal tears, area of RD and macular status, to determine the factors related to aniseikonia.
Thirty of 104 patients (29%) had micropsia, 20 patients (19%) had macropsia, and 54 patients (52%) had no aniseikonia. The mean absolute value of aniseikonia was 2.3 ± 2.9% (range; -12.5% - 12.0%). Of 49 eyes with macula-off RD, 26 had micropsia and 6 had macropsia. Of 55 eyes with macula-on RD, 4 had micropsia and 14 had macropsia. The absolute value of aniseikonia was significantly correlated with logMAR BCVA (p < 0.005), metamorphopsia score (p < 0.005) and the area of RD (p < 0.0001). No significant relationship was found between aniseikonia and other factors. Multiple regression analysis revealed that the absolute value of aniseikonia was significantly related to the area of RD.
These results suggested that about half of patients with successful repair of RD had aniseikonia. Eyes with macula-off RD tended to show micropsia, while those with macula-on RD mostly presented macropsia. Aniseikonia was associated with visual acuity, metamorphopsia, and the area of RD.
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