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Kim S, Kim EJ, Choi EJ, Oh JW, Hur J, Kang YJ, Jeong MJ, Yu HS, Lee JE. Anti-Pseudomonal Effect of Nephrite-Impregnated Contact Lenses. Curr Eye Res 2024:1-9. [PMID: 38813807 DOI: 10.1080/02713683.2024.2349649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 04/23/2024] [Indexed: 05/31/2024]
Abstract
PURPOSE This study compared the anti-pseudomonal effects between nephrite-impregnated contact lenses (CLs) and conventional and cosmetic CLs. METHODS After inoculation with Pseudomonas aeruginosa (P.aeruginosa), we counted the number of bacteria on the CL surface and observed each surface using atomic force microscopy (AFM) and scanning electron microscopy (SEM). To estimate potential harm of nephrite-impregnated CLs, we conducted a safety test using a rabbit model, treated with all CL types. RESULTS Both conventional and cosmetic CLs (n = 258 ± 2.9 × 104, 368 ± 2.2 × 104) showed significantly decreased number of attached bacteria when compared with those without nephrite impregnation (n = 134 ± 0.8 × 104, 238 ± 2.5 × 104, p < 0.0001, respectively). AFM and SEM revealed that P. aeruginosa was less attached to the nephrite-impregnated CLs than to the conventional and cosmetic CLs, although those with nephrite impregnation had rougher surface. In the safety test, there were no significant differences in the findings between four groups, and the clarity and stability of all corneas were preserved. CONCLUSIONS Nephrite may be used as a next-generation substance to reduce infectious keratitis caused by P. aeruginosa when added to CLs.
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Affiliation(s)
- Sangyoon Kim
- Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - Eun Jung Kim
- Research Center for Bio-IT Fusion Technology Research Institute, Pusan National University, Busan, Korea
| | - Eun Jung Choi
- Research Center for Bio-IT Fusion Technology Research Institute, Pusan National University, Busan, Korea
| | - Jin Woo Oh
- Research Center for Bio-IT Fusion Technology Research Institute, Pusan National University, Busan, Korea
| | - Jin Hur
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - Yoon Jeong Kang
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - Mi Jin Jeong
- Department of Parasitology and Tropical Medicine, Pusan National University School of Medicine, Yangsan, Korea
| | - Hak Sun Yu
- Department of Parasitology and Tropical Medicine, Pusan National University School of Medicine, Yangsan, Korea
| | - Ji Eun Lee
- Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
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Stapleton F. Contact lens‐related corneal infection in Australia. Clin Exp Optom 2021; 103:408-417. [DOI: 10.1111/cxo.13082] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 12/20/2022] Open
Affiliation(s)
- Fiona Stapleton
- School of Optometry and Vision Science, The University of New South Wales, Sydney, Australia,
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Jones L, Hui A, Phan CM, Read ML, Azar D, Buch J, Ciolino JB, Naroo SA, Pall B, Romond K, Sankaridurg P, Schnider CM, Terry L, Willcox M. CLEAR - Contact lens technologies of the future. Cont Lens Anterior Eye 2021; 44:398-430. [PMID: 33775384 DOI: 10.1016/j.clae.2021.02.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 02/01/2021] [Indexed: 12/20/2022]
Abstract
Contact lenses in the future will likely have functions other than correction of refractive error. Lenses designed to control the development of myopia are already commercially available. Contact lenses as drug delivery devices and powered through advancements in nanotechnology will open up further opportunities for unique uses of contact lenses. This review examines the use, or potential use, of contact lenses aside from their role to correct refractive error. Contact lenses can be used to detect systemic and ocular surface diseases, treat and manage various ocular conditions and as devices that can correct presbyopia, control the development of myopia or be used for augmented vision. There is also discussion of new developments in contact lens packaging and storage cases. The use of contact lenses as devices to detect systemic disease has mostly focussed on detecting changes to glucose levels in tears for monitoring diabetic control. Glucose can be detected using changes in colour, fluorescence or generation of electric signals by embedded sensors such as boronic acid, concanavalin A or glucose oxidase. Contact lenses that have gained regulatory approval can measure changes in intraocular pressure to monitor glaucoma by measuring small changes in corneal shape. Challenges include integrating sensors into contact lenses and detecting the signals generated. Various techniques are used to optimise uptake and release of the drugs to the ocular surface to treat diseases such as dry eye, glaucoma, infection and allergy. Contact lenses that either mechanically or electronically change their shape are being investigated for the management of presbyopia. Contact lenses that slow the development of myopia are based upon incorporating concentric rings of plus power, peripheral optical zone(s) with add power or non-monotonic variations in power. Various forms of these lenses have shown a reduction in myopia in clinical trials and are available in various markets.
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Affiliation(s)
- Lyndon Jones
- Centre for Ocular Research & Education (CORE), School of Optometry & Vision Science, University of Waterloo, Waterloo, Canada; Centre for Eye and Vision Research (CEVR), 17W Hong Kong Science Park, Hong Kong.
| | - Alex Hui
- School of Optometry and Vision Science, UNSW Sydney, Sydney, NSW, Australia
| | - Chau-Minh Phan
- Centre for Ocular Research & Education (CORE), School of Optometry & Vision Science, University of Waterloo, Waterloo, Canada; Centre for Eye and Vision Research (CEVR), 17W Hong Kong Science Park, Hong Kong
| | - Michael L Read
- Eurolens Research, Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Dimitri Azar
- Department of Ophthalmology and Visual Sciences, University of Illinois College of Medicine, Chicago, IL, USA; Verily Life Sciences, San Francisco, CA, USA
| | - John Buch
- Johnson & Johnson Vision Care, Jacksonville, FL, USA
| | - Joseph B Ciolino
- Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - Shehzad A Naroo
- College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK
| | - Brian Pall
- Johnson & Johnson Vision Care, Jacksonville, FL, USA
| | - Kathleen Romond
- Department of Ophthalmology and Visual Sciences, University of Illinois College of Medicine, Chicago, IL, USA
| | - Padmaja Sankaridurg
- School of Optometry and Vision Science, UNSW Sydney, Sydney, NSW, Australia; Brien Holden Vision Institute, Sydney, Australia
| | | | - Louise Terry
- School of Optometry and Vision Sciences, Cardiff University, UK
| | - Mark Willcox
- School of Optometry and Vision Science, UNSW Sydney, Sydney, NSW, Australia
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Tabbasum K, Reddy DS, Singh V, Subasri R, Garg P. Sol-Gel Nanocomposite Coatings for Preventing Biofilm Formation on Contact Lens Cases. Transl Vis Sci Technol 2021; 10:4. [PMID: 33505771 PMCID: PMC7794269 DOI: 10.1167/tvst.10.1.4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 11/08/2020] [Indexed: 12/22/2022] Open
Abstract
Purpose To evaluate the efficacy of a nanosilver-based sol–gel coating in preventing biofilm formation on contact lens cases. Methods An organic–inorganic hybrid silica–zirconia sol formulation with immobilized silver nanoparticles was deposited on contact lens case coupons. The coated and uncoated coupons were subjected to biofilm formation to Gram-negative and Gram-positive keratitis isolates and ATCC strains using a standard protocol. The biofilms were evaluated using crystal violet, MTT assay, and scanning electron microscope (SEM) examination. The duration of efficacy of the coating was evaluated by exposing the coated and uncoated coupons to a multipurpose lens cleaning solution for various durations up to 30 days and comparing their biofilm characteristics. The cytotoxicity of the coated surface was assessed using cell culture studies. Results Cross-hatch tests and SEM confirmed the presence of a uniform, well-adhered coating on the surface. The coating resulted in a nearly 95% reduction in biofilm formation of the tested bacteria and was effective despite exposures of up to 30 days to a multipurpose lens cleaning solution. The coating did not exhibit cytotoxicity to human corneal epithelial cells. Conclusions The silver nanoparticle-based coating exhibits a good antibiofilm property for both Gram-negative bacilli and Gram-positive cocci and is promising for commercial use in preventing contact lens-related infections. Translational Relevance Biofilm formation on lens cases continues to be an important concern. The proposed coating will help reduce such formations, thus reducing the risk of lens-associated microbial keratitis.
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Affiliation(s)
- Khatija Tabbasum
- L V Prasad Eye Institute, Kallam Anji Reddy Campus, Hyderabad, Telangana, India
| | - D S Reddy
- Centre for Sol-Gel Coatings, International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur, Hyderabad, Telangana, India
| | - Vivek Singh
- L V Prasad Eye Institute, Kallam Anji Reddy Campus, Hyderabad, Telangana, India
| | - R Subasri
- Centre for Sol-Gel Coatings, International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur, Hyderabad, Telangana, India
| | - Prashant Garg
- L V Prasad Eye Institute, Kallam Anji Reddy Campus, Hyderabad, Telangana, India
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Park SH, Lee SU, Kim YK, Yu HS, Park SH, Ahn JH, Kim SJ, Shin JH, Lee JE. Anti-staphylococcal Effect of a Nephrite-containing Contact Lens Storage Case. JOURNAL OF THE KOREAN OPHTHALMOLOGICAL SOCIETY 2020. [DOI: 10.3341/jkos.2020.61.8.868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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