Posters

Symmetry of fovea after macular hole surgery without ILM peeling

Poster Details

First Author: K.Ohta JAPAN

Co Author(s):    A. Sato   N. Senda   E. Fukui   Y. Komurasaki                    

Abstract Details



Purpose:

We have shown that the parafoveal retina is thicker in the nasal sector and thinner in the temporal sector after successful idiopathic macular hole (MH) closure by pars plana vitrectomy (PPV) with internal limiting membrane (ILM) peeling. We have also reported a steeper and asymmetrical foveal contour around the closed MH. The purpose of this study was to determine whether these morphological changes differ in eyes after MH surgery without ILM peeling.

Setting:

A retrospective study conducted on patients treated at the Matsumoto Dental University Hospital.

Methods:

Six eyes of 6 patients who underwent PPV without ILM peeling and 12 eyes of 11 patients with ILM peeling with a MH less than 400 µm in diameter were studied. At 6 months after the PPV, the macular thickness and foveal slope around the closed macular hole were measured by spectral-domain OCT (Spectralis HRA+OCT, Heidelberg). The thickness of the ganglion cell complex (GCC) was measured by another SD-OCT (RS-3000, Nidek) more than 6 months after the surgery.

Results:

The mean parfafoveal retinal thickness in the non-peeled group was 369.0 µm in the nasal (N), 367.2 µm in the temporal (T), 372.7 µm in the superior (S), and 360.7 µm in the inferior (I) sectors. The T and I sectors were significantly thicker than the corresponding sectors in the ILM peeled group. The mean retinal slopes in the non-peeled group (N=39.7, T=37.0, S=39.1, I=37.8 degrees) were flatter than those in the peeled group (N 51.9, T 45.3, S 52.2, I 52.6 degrees). The mean GCC was thicker in not only the N sector but also in the T sector in the non-peeled group.

Conclusions:

The symmetrical fovea after MH surgery in the non-ILM peeled eyes indicates that the asymmetrical fovea is associated with ILM peeling.

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