What type of laser exposure can lead to kerato-conjunctivitis?

Kerato-conjunctivitis, an inflammation of the cornea and conjunctiva, can be caused by exposure to ultraviolet (UV) radiation. This form of radiation encompasses near-UV, which ranges from about 315 to 400 nm. This specific wavelength is particularly effective at causing damage to the tissues of the eye.

Near-UV exposure can lead to cellular damage and inflammation in the sensitive structures of the eye, leading to symptoms associated with kerato-conjunctivitis, such as redness, irritation, and a sensation of grit in the eyes.

While other forms of light, such as visible light and far-infrared, are important to consider in laser safety, they typically do not have the same direct damaging effects on the corneal and conjunctival tissues as near-UV light. Therefore, identifying near-UV exposure as the primary cause in this scenario highlights the unique risks associated with this specific range of ultraviolet radiation in relation to eye health.