Comparison of optic disc parameters of eyes with unilateral vitreopapillary adhesion

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Introduction and Purpose: Interocular comparison of the optic disc structures of the eye swith and without vitreopapillary adhesion (VPA) to determine the disc anatomical features that may predispose to VPA.Method: Optical coherence tomography (OCT) images of patients who applied to our clinic were retrospectively scanned and cases with unilateral VPA were identified.A total of 52 patients with unilateral VPA were retrospectively evaluated.OCT parameters include four retinal nerve fiber layer (RNFL) thicknesses, rim area (RA), disc area (DA), linear cup/disc ratio (lcdr), vertical cup/disc ratio (vcdr), cup volume (cv) data, VPA and non-VPA eye parameters were recorded and compared.Results: According to the recorded OCT findings of the patients, the mean inferior quadrant RNFL thickness was found to be 131.46±23.63 in the VPA+ eyes and 125.65±26.39 in the VPA-eyes.When the cup/disc ratios were examined, the average value of the lcdr in VPA+ eyes was 0.50±0.28,while 0.59±0.24 in VPA-eyes.The difference between lcdr and vcdr observed to be statistically significant.Discussion: We think that the anatomical structure of the optic disc may be effective in the occurrence of VPA.The fact that the longitudinal and vertical cup/disc ratios in eyes with VPA in our study were smaller than those in eyes without VPA supports our idea.In cases and eyes with VPA, vitreopapillary traction may be occurring on the disc head in the future and may play a role in the etiology of non-ischemic anterior optic neuropathy by affecting disc perfusion.