Papillomacular Bundle Defect (PMBD) in Glaucoma Patients with High Myopia: Frequency and Risk Factors

Abstract

Little is known about the papillomacular bundle defect (PMBD) in glaucoma. As such, we investigated the frequency of PMBD in glaucoma patients with high myopia, and its risk factors. In this retrospective, cross-sectional study, Retinal nerve fiber layer (RNFL) defect was analyzed in 92 glaucomatous eyes with high myopia (axial length of 26.0 mm or more or an average spherical value of –6.0 diopters or less). After dividing them into two groups with and without PMBD, respectively, the clinical characteristics of the groups were compared and analyzed. The mean age of the patients was 52.1 ± 10.5 years, and there were 53 males and 39 females. PMBD were observed in 55 eyes (59.8%). There was no significant intergroup difference in baseline or follow-up intraocular pressure (IOP). Parapapillary atrophy (PPA)-to-Disc-area ratio (OR 3.83, CI:1.58 – 10.27), lamina cribrosa defect (LCD; OR 2.92, CI :1.14 – 8.13, p = 0.031) and central visual field defect (CVFD; OR 3.56, CI : 1.38 – 9.58, p = 0.010) were significantly associated with the PMBD group.