Asymmetrical steepening of the foveal contour after macular hole surgery with internal limiting membrane peeling

Abstract

Although the postoperative foveal contour was markedly changed asymmetrically, the significance of the change was not determined.

Comparisons of foveal thickness and slope after macular hole surgery with and without internal limiting membrane peeling

“…Thus, the foveal contour around fovea was symmetrical. 15 In the operated eyes, the mean foveal slope was significantly steeper than that in fellow eyes, and the steepest slope was found in the nasal quadrant. The mean parafoveal retinal thickness was thinnest in the temporal quadrant which corresponds to the site of the flattest foveal slope.…”

“…We have shown similar results based on a relatively larger number of the eyes. 15 In addition, this is the first report to compare the mean angles of foveal slope around the closed MH with or without ILM peeling. Interestingly, there were significant differences in the mean angles between eyes with and without ILM peeling.…”

“…The foveal slope was measured with the ImageJ (National Institutes of Health) software by two masked examiners as described in detail by Ohta et al 15 The horizontal and vertical images obtained by the Spectralis HRA+OCT centered on the fovea in the cross-hair mode (30°) were evaluated. In brief, the foveal slope was expressed as the angle (in degrees) formed by the flat retinal pigment epithelium (RPE) and a line running tangentially along the borders of the closed MH.…”

<p>Stereopsis After Unilateral Macular Hole Surgery with Internal Limiting Membrane Peeling</p>

“…The macular thickness was obtained from the volume scan mode of the OCT instrument as described in detail. 8,11,15,16,18,19 The horizontal and vertical images centered on the fovea in the cross-hair mode (30°) were evaluated. The center point of the opened MH was determined manually in the enlarged images of the retina on a monitor screen.…”

“…The BCVA was measured with a Landolt C chart, and the decimal values were converted to logarithm of the minimal angle of resolution (logMAR) units. 16,19 The significance of the differences in the preand postoperative BCVAs was determined by t tests. The results of TST and TNO are expressed as "seconds of arc".…”