Also known as photokeratitis, welder's flash, snow blindness
Prolonged/excessive UV exposure to eyes leads to inflammatory response and subsequent desquamation of corneal epithelium leaving exposed nerve endings of cornea
May not be initially apparent with latent period (6-12 hours) before onset
Lack of proper eye protection
UV exposure from:
Natural sources: snow, water, high altitudes (less protective ozone), eclipses
Artificial sources: Welder's arc, tanning beds, damaged metal halide lamps/lights
Natural sources: snow, water, high altitudes (less protective ozone), eclipses
Artificial sources: Welder's arc, tanning beds, damaged metal halide lamps/lights
Atopic keratoconjunctivitis
Common in patients with atopy (ie: eczema, allergies, asthma, rhinitis)
Caustic keratoconjunctivitis
Secondary to chemical orbital exposure
Epidemic keratoconjunctivitis
Highly contagious viral (adenovirus) conjunctivitis, associated with watery discharge<unk> 
Secondary to UV light exposure
Keratoconjunctivitis sicca
Associated with autoimmune disorders such as Sjögren syndrome, sarcoidosis, rheumatoid arthritis, and scleroderma
Common in patients with atopy (ie: eczema, allergies, asthma, rhinitis)
Secondary to chemical orbital exposure
Highly contagious viral (adenovirus) conjunctivitis, associated with watery discharge
Secondary to UV light exposure
Associated with autoimmune disorders such as Sjögren syndrome, sarcoidosis, rheumatoid arthritis, and scleroderma
Ultraviolet keratitis
Other causes of keratoconjunctivitis
Bacterial keratitis
Viral conjunctivitis
Herpes simplex keratitis
Thygeson's Superficial Punctate Keratitis
Corneal ulcer
Dry eyes