Non-invasive bleaching of the human lens by femtosecond laser photolysis
| Autor: | Mike van der Poel, Michael Larsen, Lars Eskildsen, Line Kessel |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Adult
Adolescent Light genetic structures medicine.medical_treatment lcsh:Medicine Cataract Extraction Cataract law.invention Laser photolysis SDG 3 - Good Health and Well-being law Lens Crystalline medicine Humans Child lcsh:Science Rejuvenation Aged Photobleaching Photolysis Multidisciplinary Ophthalmology/Cataracts and Other Lens Disorders Blindness business.industry Lasers Non invasive lcsh:R Middle Aged Cataract surgery Physics/General Physics Laser medicine.disease eye diseases Lens (optics) Biophysics/Protein Chemistry and Proteomics Child Preschool Femtosecond Optometry lcsh:Q Biotechnology/Bioengineering sense organs business Research Article |
| Zdroj: | PLoS ONE, Vol 5, Iss 3, p e9711 (2010) Kessel, L, Eskildsen, L, Poel, M V D & Larsen, M 2010, ' Non-invasive bleaching of the human lens by femtosecond laser photolysis ', P L o S One, vol. 5, no. 3, pp. e9711 . https://doi.org/10.1371/journal.pone.0009711 PLoS ONE |
| ISSN: | 1932-6203 |
| DOI: | 10.1371/journal.pone.0009711 |
| Popis: | Background Globally, cataract is the leading cause of blindness and impaired vision. Cataract surgery is an attractive treatment option but it remains unavailable in sufficient quantity for the vast majority of the world population living in areas without access to specialized health care. Reducing blindness from cataract requires solutions that can be applied outside operating theatres. Cataract is a protein conformational disease characterized by accumulation of light absorbing, fluorescent and scattering protein aggregates. The aim of the study was to investigate whether these compounds were susceptible to photobleaching by a non-invasive procedure and whether this would lead to optical rejuvenation of the lens. Methodology/Principal Findings Nine human donor lenses were treated with an 800 nm infra-red femtosecond pulsed laser in a treatment zone measuring 1×1×0.52 mm. After laser treatment the age-induced yellow discoloration of the lens was markedly reduced and the transmission of light was increased corresponding to an optical rejuvenation of 3 to 7 years. Conclusions/Significance The results demonstrate that the age-induced yellowing of the human lens can be bleached by a non-invasive procedure based on femtosecond laser photolysis. Cataract is a disease associated with old age. At the current technological stage, lens aging is delayed but with a treatment covering the entire lens volume complete optical rejuvenation is expected. Thus, femtosecond photolysis has the potential clinical value of replacing invasive cataract surgery by a non-invasive treatment modality that can be placed in mobile units, thus breaking down many of the barriers impeding access to treatment in remote and poor regions of the world. |
| Databáze: | OpenAIRE |
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