Regardless of whether CVK is used qualitatively for RGP lens design selection or quantitatively in RGP parameter selection, it has a significant role in contact lens practice. Further advancements and testing on CVK-based RGP fitting modules and fluorescein simulations will make CVK an invaluable tool for the RGP lens fitter. Soft lens applications of CVK data are already being tested [42,43]. This technology will become the standard of care for all contact lens patients and will most likely replace the keratometer.
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History of Lens Care Products in Japan: Insights From Advertisements in the Journal of the Japan Contact Lens Society for 65 Years.
Eye Contact Lens
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Department of Ophthalmology (H.T.), Juntendo University Shizuoka Hospital, Izunokuni, Japan; Department of Ophthalmology (A.M.), St. Marianna University School of Medicine, Kawasaki, Japan; Department of Innovative Visual Science (S.K.), Osaka University Graduate School of Medicine, Osaka, Japan; Department of Ophthalmology (Y.H.), Toho University Faculty of Medicine, Tokyo, Japan; and Japan Contact Lens Society (H.T., A.M., S.K., Y.H.), Osaka, Japan.
This review examines the history of contact lens (CL) care products, particularly focusing on hard contact lenses (HCLs) like those made from polymethyl methacrylate and rigid gas permeable (RGP) materials. Although literature on CL history is extensive, there is limited information on the history of CL care products, especially in Japan. This review uses advertisements from the Journal of the Japan Contact Lens Society from 1959 to 2023 to trace the evolution of these products.
View Article and Find Full Text PDFEfficacy of different disinfecting methods for contact lenses against Acanthamoeba castellanii.
Cont Lens Anterior Eye
November 2024
Department of Optometry and Vision, Faculty of Optics and Optometry, Universidad Complutense de Madrid, Madrid, Spain; Ocupharm Group Research, Faculty of Optics and Optometry, Universidad Complutense de Madrid, 28037 Madrid, Spain. Electronic address:
Purpose: To analyze the efficacy of different disinfecting methods for contact lenses (CL) against Acanthamoeba castellanii (AC) using quantitative PCR (qPCR) based on RNA detection.
Methods: Three CL materials: rigid gas permeable (RGP), hydrogel (Hy), and silicone hydrogel (SiHy), were contaminated with 1x10 amoebae/ml and incubated for 24 h at 30 °C. After contamination, pre-cleaning steps were performed before using four maintenance solutions based on hydrogen peroxide (HP), sodium hypochlorite (SH), povidone-iodine (PI), and a multipurpose solution (MS).
Artificial intelligence versus conventional methods for RGP lens fitting in keratoconus.
Cont Lens Anterior Eye
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Groupe de Recherche Clinique #32, Transplantation et Thérapies Innovantes de la Cornée, Sorbonne Université, Hôpital National des 15-20, Paris, France.
Background: To compare the efficiency of three artificial intelligence (AI) frameworks (Standard Machine Learning (ML), Multi-Layer Perceptron (MLP) and Convolution Neural Networks (CNN)) with a reference method (Mean radius of curvature (K)) to predict the posterior radius of curvature of the best-fitted rigid contact lens (RCBFL) in keratoconus eyes.
Methods: This retrospective study included 197 keratoconus eyes of 135 patients fitted with Rose K2® (Menicon®, Nagoya, Japan) rigid contact lenses with one or more topographies available (MS39®, CSO®, Ferrara, Italy) between January 2020 and September 2022. Two types of topographic data (indices and reconstructed maps from raw data) were used for AI analysis.
Referral Pattern and Comanagement of Patients With Keratoconus in West Africa: A Survey-Based Study of Optometrists in Ghana and Nigeria.
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Cornea and Contact Lens Unit (C.J.O., S.B.), De Lens Ophthalmic Family and Vision Care Centre, Abuja, Nigeria; Department of Optometry and Visual Science (E.K.-A., P.A.), Kwame Nkrumah University of Science and Technology, Kumasi, Ghana; Centre for Eye Research Ireland (E.K.-A.), Environmental Sustainability and Health Institute, Technological University Dublin, Dublin, Ireland; Permeff Eye Care (P.E.T.), Accra, Ghana; First Vision Eye Care (L.A.A.K.), Kumasi, Ghana; and College of Optometry (P.A.), University of Houston, Houston, TX.
Article Synopsis
- - The study aimed to analyze how primary eye care practitioners in Ghana and Nigeria refer and manage patients with keratoconus, utilizing a survey sent out via email and social media.
- - Out of 169 responses, the majority of optometrists lacked access to necessary equipment like corneal topographers, were hesitant to fit rigid gas-permeable (RGP) lenses due to various barriers, and acknowledged the need for further training to improve their skills.
- - Results indicated significant gaps in the management of keratoconus, with many practitioners unaware of local corneal surgeons, suggesting a need for improved clinical guidelines and training in West Africa.
Visual rehabilitation using rigid gas permeable contact lenses after femtosecond laser-assisted minimally invasive lamellar keratoplasty in patients with keratoconus.
Sci Rep
October 2024
State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Eye Institute of Shandong First Medical University, 372 Jingsi Road, Jinan, 250021, China.
This study aims to observe the clinical efficacy and safety of rigid gas permeable corneal contact lenses (RGP-CLs) wearing after femtosecond laser-assisted minimally invasive lamellar keratoplasty (FL-MILK) in progressive and advanced keratoconus eyes. Twenty-five patients (27 eyes) fitted with RGP-CLs after FL-MILK were enrolled, and 22 grading-matched keratoconus patients (23 eyes) as a control group. Corneal morphological data, diopter, best corrected vision, corneal endothelium, non-invasive tear film rupture time (NIBUT), corneal perception and comfort questionnaire were analysed before and after wearing RGP-CLs.
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