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Swept-source optical coherence tomography changes and visual acuity among Palestinian retinitis Pigmentosa patients: a cross-sectional study

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Retinitis pigmentosa (RP) is a heterogeneous group of inherited ocular diseases that result in progressive retinal degeneration. This study aims to describe different Swept-source Optical Coherence Tomographic (SS-OCT) changes in Palestinian RP patients and to explore possible correlations with Visual Acuity (VA). Methods A cross-sectional observational study was conducted on Retinitis Pigmentosa patients diagnosed with RP in a tertiary eye hospital. Full history and ocular examination were made. SS-OCT imaging was done for all eyes assessing the presence of cystoid macular edema, epiretinal membrane, macular holes, and external limiting membrane, ellipsoid zone status. Also, central macular thickness and choroidal vascular thickness were measured. Results The study was run on 161 eyes of 81 patients; 53 males and 28 females. The average age at examination was 26.1 (6–78) years. Twenty-six eyes (16.1%) were of syndromic RP patients, mostly Usher syndrome; 20 eyes (12.4%). The mean Loga
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Ethnic variation in medial orbital wall anatomy and its implications for decompression surgery

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To describe the inter-ethnic variation in medial orbital wall anatomy between Chinese, Malay, Indian and Caucasian subjects Observational research using computed tomography (CT) in a single centre. Gender and laterality were matched in 20 individuals of each race. We excluded subjects younger than 16 years and those with orbital pathology. OsiriX version 8.5.1 (Pixmeo., Switzerland) and DICOM image viewing software CARESTREAM Vue PACS (Carestream Health Inc., USA) were used to measure the ethmoidal sinus length, width, and volume, as well as the angle between the medial orbital wall and the floor, and the location of the posterior ethmoid sinus in relation to the posterior maxillary wall. The Statistical Package for Social Sciences, version 25.0, was used to conduct the statistical analyses (IBM, USA). Results Each group had 12 men (60 percent), with no significant age difference (p = 0.334–0.994). The mean ethmoid sinus length in Chinese, Malay, Indian, and Caucasian participants, usi
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