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07.10.2016 | Clinical Investigation | Ausgabe 1/2017

Japanese Journal of Ophthalmology 1/2017

Effect of vitreomacular separation on macular thickness determined by spectral-domain optical coherence tomography

Zeitschrift:
Japanese Journal of Ophthalmology > Ausgabe 1/2017
Autoren:
Kazuyuki Kumagai, Akinori Uemura, Masanori Hangai, Tetsuyuki Suetsugu, Nobuchika Ogino

Abstract

Purpose

To determine the effects of vitreomacular separation on macular thickness.

Methods

This was a retrospective, observational, cross-sectional study. Average foveal and central minimum thicknesses were measured by spectral-domain optical coherence tomography (SD-OCT) in 308 eyes of 308 healthy subjects (healthy group) and 298 normal fellow eyes of 298 patients with a unilateral macular hole (MH group). Multiple regression analyses were performed to determine the effects of various factors on the macular thickness.

Results

The mean age of the healthy group was 67.3 ± 9.6 years (range 40–88 years) and that of the MH group was 67.8 ± 7.0 years (range 43–91). SD-OCT images showed that 149 eyes (48.4 %) in the healthy group and 174 eyes (58.4 %) in the MH group had a vitreomacular separation. In the healthy group, the central minimum thickness of eyes with a vitreomacular separation (196 µm) was significantly thinner than those without a vitreomacular separation (205 µm; P < 0.001). In the MH group, the average foveal thickness (234 µm) and the central minimum thickness (177 µm) in eyes with a vitreomacular separation were thinner than those without it (247 and 199 µm, respectively; both P < 0.001). Multiple regression analyses showed that a vitreomacular separation was significantly correlated with thinner central minimum thicknesses in both groups (P < 0.001) and also with the average foveal thickness in the MH group (P < 0.001).

Conclusions

A vitreomacular separation caused thinning of the central fovea in both the healthy eyes and the normal fellow eyes of unilateral MH patients; the extent of foveal thinning is greater in the MH group.

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