Biochemistry of Cataractogenesis
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Biochemistry of Cataractogenesis
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概要
Episode 39 - Biochemistry of Cataractogenesis
What really causes the lens to lose its transparency?
Hi I am Dr Thomas Whitelaw and in this episode of Basic Sciences in Ophthalmology, we dive into the biochemical foundations of cataract formation, breaking down the molecular processes that drive one of the most common causes of visual impairment worldwide.
We explore how oxidative stress damages lens crystallins, leading to protein aggregation and light scatter. You’ll learn how UV radiation accelerates cataractogenesis through reactive oxygen species and photochemical reactions, and why these effects worsen with age.
Finally, we examine the lens’s antioxidant defense systems, including glutathione, ascorbate, and key enzymes—and how their gradual decline tips the balance toward irreversible damage.
Topics covered:
1. Lens protein oxidation and aggregation
2. UV-induced oxidative damage
3. Antioxidant defenses and their failure.
Perfect for ophthalmology trainees, this episode connects basic science with clinical relevance, helping you understand cataract formation at a molecular level.