Exposure to high levels of ultraviolet light can cause many eye problems, including cataracts, photokeratitis (snow-blindness), pingueculae (an irritating growth), and pterygium (another type of growth).
Pterygium Inversum Ungius: This condition causes the hyponychium (the soft skin that lies directly under the free edge of the nail) to grow forward with the fingernail.
A lesser known consequence to UV rays is Pterygium, but it's every bit as dangerous as its better known disease counterparts.
More to the point, sunshine has been linked to macular degenerative disease, eyelid cancer, pterygium and keratitis.
Pterygium: Pterygium occurs when the skin behind the cuticle begins to advance over the nail plate.
Pterygium is a growth that begins on the white of the eye that may or may not involve the cornea.
This abnormal growth is called a pinguecula and in the more advanced stages a pterygium.