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Current Protein & Peptide Science

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ISSN (Print): 1389-2037
ISSN (Online): 1875-5550

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Review Article

Effect of the Ultraviolet Radiation on the Lens

Author(s): Yissell Borges-Rodríguez, Rodrigo Morales-Cueto* and Lina Rivillas-Acevedo*

Volume 24, Issue 3, 2023

Published on: 27 January, 2023

Page: [215 - 228] Pages: 14

DOI: 10.2174/1389203724666230106161436

Price: $65

Abstract

The lens is a transparent, biconvex anatomical structure of the eyes responsible for light transmission and fine focusing on the retina. It is fundamentally constituted by water-soluble proteins called crystallins which are responsible for lens transparency due to their stable and highly organized disposition in the lens fiber cells. Some conformational changes and the subsequent aggregation of crystallins lead to loss of transparency in the lens and are the beginning of cataracts, which is the most frequent cause of reversible blindness in the world. Ultraviolet radiation is considered one of the risk factors for cataract development. The lens is exposed to radiation between 295 and 400 nm. This UV radiation may induce several processes that destroy the crystallins; the most significant is the oxidative stress due to increased free radicals formation. The oxidative stress is directly involved in modifications of the crystallin proteins leading to the formation of high molecular weight aggregates and then the subsequent opacification of the lens, known as cataracts. This review aims to summarize current knowledge about the damage of the lens proteins caused by ultraviolet radiation and its role in developing cataracts.

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