CORRELATION BETWEEN BRUCH’S MEMBRANE OPENING IN OPTICAL COHERENCE TOMOGRAPHY AND OPTIC CUP TO DISC RATIO BY ULTRAWIDE-FIELD IMAGING | ||
| ALEXMED ePosters | ||
| Article 1, Volume 7, Issue 3, July 2025, Pages 18-19 | ||
| Document Type: Preliminary preprint short reports of original research | ||
| DOI: 10.21608/alexpo.2025.406165.2225 | ||
| Authors | ||
| Ahmed AbdElRazik Souka1; Mohamad Mohamad Lolah2; Mohamad Hesham Ghonem2; Hady Moustafa Youssef El-Naggar* 2 | ||
| 1Department of Opthalmology, Faculty of Medicine, Alexandria University | ||
| 2Department of Ophthalmology, Faculty of Medicine, Alexandria University | ||
| Abstract | ||
| Glaucoma, a progressive optic neuropathy, is a serious ocular disease characterized by high intraocular pressure (IOP) and visual field defects that may eventually lead to blindness. The vertical cup-to-disc ratio (VCDR) is frequently used to detect glaucoma as part of the optic disc assessment. The VCDR reflects the neuroretinal rim health and shows the cup's diameter as a fraction of the disc's diameter along the vertical meridian. Although VCDR has limits, mostly because of its correlation with optic disc size, it is especially significant since glaucomatous damage especially affects the superior and inferior neuroretinal rim. Previously, spectral domain optical coherence tomography (SD-OCT) assessment of the neuroretinal rim employed a parameter called "Bruch's Membrane Opening-Horizontal Rim Width" (BMO-HRW), which is defined as the distance between BMO and internal limiting membrane (ILM) on the horizontal plane. More recently, the Spectralis OCT (Heidelberg Engineering, Germany) developed a new parameter called “Bruch’s Membrane Opening–Minimum Rim Width” (BMO-MRW) with Glaucoma Module Premium Edition (GMPE), which is calculated as the minimum distance between the BMO and nearest point on the ILM The Optos fundus camera is a confocal scanning laser ophthalmoscope-based system with an ellipsoidal mirror that allows imaging of up to 200° of the retina. With this technology, no contact lenses or pupillary dilatation are needed. With cooperative patients, the field can be extended to reach the ora serrata. This study is directed to finding out if there is a strong correlation between BMO-MRW measured by OCT and VCDR as measured by Optos annotation tool. | ||
| Keywords | ||
| Bruch’s Membrane Opening–Minimum Rim Width” (BMO-MRW); Optos; The vertical cup-to-disc ratio (VCDR) | ||
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