Which range of wavelengths is associated with corneal damage from optical radiation?

Corneal damage from optical radiation primarily occurs in the range of wavelengths below 400 nm, which includes ultraviolet (UV) radiation. This UV radiation can have harmful effects on various parts of the eye, especially the cornea, leading to conditions such as photokeratitis, cataracts, and other ocular injuries.

The UV spectrum is typically categorized into three regions: UVA (320-400 nm), UVB (280-320 nm), and UVC (100-280 nm). It is primarily the UVB and UVC wavelengths that are concentrated in causing damage due to their higher energy levels and capacity to penetrate biological tissues. The intensity of radiation in this range is often sufficient to cause cellular damage, leading to inflammation and contributing to long-term eye health issues.

In contrast, the other ranges of wavelengths presented do not pose the same level of risk for corneal damage. For instance, the ranges from 600-800 nm and 400-700 nm mainly fall into the visible light spectrum and are much less likely to cause direct damage to the cornea. While they can still affect vision and lead to discomfort, they do not carry the same risk of physical injury as the wavelengths below 400 nm. Therefore, identifying that wavelengths below 400 nm