Photophthalmia


Photophthalmia is ophthalmia or inflammation of the eye, especially of the cornea and conjunctiva due to exposure to intense light of short wavelength, as in snow blindness.
It involves occurrence of multiple epithelial erosions due to the effect of ultraviolet rays, especially between 311 and 290 nm. Snow blindness occurs due to reflection of ultraviolet rays from snow surface. Photoretinitis is another form that can occur due to infra-red rays.

Presentation

It can present with the following:
Usually the effect of UV exposure is felt after 6-8 hours from exposure. With severe irritation, the eyes become blood red. In minor cases, avoid rubbing and wash the eyes thoroughly with water until the irritation subdues. Always consult an eye specialist as soon as possible. Medications usually involve eye drop such as Hydroxypropyl Methycellulose Ophthalmic solution USP sold under the trade name GenTeal®.

Prevention

Crooke’s glass is a prophylactic aid consisting of a spectacle lens combined with metallic oxides to absorb ultraviolet or infrared rays and should be used by those who are prone to exposure e.g. Welding workers, cinema operators.

Treatment

The following may provide relief: