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A Unique Retinoscopic Reflex Pattern in the Initial Stages of Keratoconus and Its Clinical Significance for Early Keratoconus Detection: A Case Report.
Cureus
November 2024
Department of Optometry, Noor Alyemen Eye and E.N.T Consulting Center, Sana'a, YEM.
Keratoconus is a bilateral eye anomaly in which the cornea develops gradually, becoming steeper and thinner, causing irregular astigmatism and myopia. This unique case report highlights an atypical retinoscopic reflex that can be observed in the initial stages of keratoconus. While the reflex deviates subtly from the normal form, exhibiting a slightly distorted, irregular, and non-scissoring pattern, it differs significantly from the well-documented "scissor reflex," which is characteristic of moderate to advanced stages.
View Article and Find Full Text PDFThe Prevalence and Severity of Computer Vision Syndrome Among Primary Care Health Workers in the Ministry of National Guard Health Affairs, Central Region, Saudi Arabia.
Cureus
November 2024
Family Medicine and Primary Care Department, King Abdulaziz Medical City Riyadh, Riyadh, SAU.
Background Computer vision syndrome (CVS) is a common condition affecting individuals who spend prolonged periods using electronic devices. It is characterized by symptoms such as eye strain, dryness, headaches, and neck pain. This study aims to assess the prevalence of CVS symptoms among healthcare professionals, their awareness of the condition, and the effectiveness of various preventative practices.
View Article and Find Full Text PDFDiurnal variation of visual functions for driving with and without orthokeratology: A multicenter study.
Cont Lens Anterior Eye
December 2024
College of Health and Life Sciences, Aston University, Birmingham, United Kingdom.
Purpose: To investigate orthokeratology-related diurnal variations in visual acuity, contrast sensitivity, mesopic (twilight) vision, and glare sensitivity, and to verify compliance with requirements for driver licensing.
Methods: In this prospective, multicenter, controlled study, fifty myopic (range, -1.00 to -4.
Multiscale cellulose-based optical management films with tunable transparency and haze fabricated by different bamboo components and mechanical defibrillation approaches.
Carbohydr Polym
January 2025
International Centre for Bamboo and Rattan, Beijing 100102, China; Key Laboratory of National Forestry and Grassland Administration, Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China. Electronic address:
Renewable cellulose is an outstanding candidate to prepare biomass-based optical management films with tunable transparency and haze. Micro-scale and nano-scale cellulose derived from the parenchyma cells (PC) and bamboo fibers (BF) of Dendrocalamus sinicus was first separated and then subjected to succinic esterification and mechanical defibrillation using three different methods: ultrasonication, high-speed blending, and microfluidization. Sustainable multiscale optical management films with tunable haze were obtained by changing the weight ratios of micro/nanoscale cellulose.
View Article and Find Full Text PDFBionic polarization compass is a fascinating subject in the navigation domain. However, the polarization navigation accuracy is severely degraded by the influence of city glow at dusk. Therefore, we proposed an ultraviolet bionic compass method based on non-ideality correction and statistical guidance.
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