Which wavelengths are hypothesized to contribute to cataract development?

Disable ads (and more) with a premium pass for a one time $4.99 payment

Prepare for the Optician Practical Exam. Master your skills with flashcards and multiple-choice questions, complete with hints and explanations. Ace your examination confidently!

The hypothesized contribution of certain wavelengths to cataract development is particularly associated with ultraviolet (UV) light and, to some extent, visible light. In the context of the provided options, the range of 350nm to 400nm is where UV-B radiation overlaps with the lower end of the visible spectrum. UV-B radiation has been widely studied and is considered harmful to the lens of the eye, leading to oxidative stress and subsequent cataract formation.

This range is crucial because shorter wavelengths (like those below 350nm) are absorbed by the cornea and do not significantly reach the lens, while wavelengths above 400nm are less associated with known cataractogenic effects. The 350nm to 400nm range encapsulates the wavelengths that are more contextually relevant to the effects described in studies linking UV exposure to the onset of cataracts.

Overall, this information provides a clear understanding of the potential mechanisms involved in cataract development related to light exposure.