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Aniseikonia in various retinal disorders.

Fumiki Okamoto1, Yoshimi Sugiura2, Yoshifumi Okamoto2

  • 1Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8575, Japan. fumiki-o@md.tsukuba.ac.jp.

Graefe'S Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie
|January 27, 2017
PubMed
Summary

Aniseikonia, a visual distortion, affects over half of patients with retinal disorders. While vitrectomy improves vision, it does not significantly correct aniseikonia, particularly in epiretinal membrane cases.

Keywords:
AniseikoniaMacropsiaMicropsiaRetinal disordersVitrectomy

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Area of Science:

  • Ophthalmology
  • Retinal Surgery
  • Visual Perception

Background:

  • Aniseikonia, a disparity in perceived image size between the eyes, is a common complication following retinal surgery.
  • Understanding the prevalence and characteristics of aniseikonia in various retinal disorders is crucial for patient management.

Purpose of the Study:

  • To quantify and compare the severity of aniseikonia in patients undergoing vitrectomy for diverse retinal conditions.
  • To evaluate the impact of vitrectomy on aniseikonia and visual acuity across different retinal pathologies.

Main Methods:

  • A cohort of 357 patients with retinal disorders (epiretinal membrane, macular hole, retinal vein occlusion with cystoid macular edema, diabetic macular edema, rhegmatogenous retinal detachment) and 31 controls were studied.
  • Aniseikonia was measured using the New Aniseikonia Test preoperatively and at 6 months postoperatively.

Main Results:

  • Aniseikonia was present in 59% of patients, with preoperative and postoperative mean values of 4.0% and 3.0%, respectively.
  • Epiretinal membrane (ERM) patients frequently experienced macropsia, while macular hole (MH), retinal vein occlusion with cystoid macular edema (RVO-CME), diabetic macular edema (DME), and macula-off rhegmatogenous retinal detachment (M-off RD) patients often had micropsia.
  • Preoperative aniseikonia was most severe in ERM patients. Vitrectomy improved aniseikonia only in MH cases, though visual acuity improved across most conditions.

Conclusions:

  • Over half of patients exhibit preoperative aniseikonia, with specific patterns of macropsia (ERM) and micropsia (MH, RVO-CME, DME, M-off RD).
  • Epiretinal membrane patients presented with the highest aniseikonia scores.
  • Vitrectomy effectively improved visual acuity in most retinal disorders but did not significantly ameliorate aniseikonia.