New glass promises improved UV blocking

Most people are aware that ultraviolet (UV) rays can cause damage to the skin, but it can also damage the eyes. The cumulative effect of not protecting eyes from the sun can cause unpleasant problems such as cataracts, skin cancers around the eye and pterygium - an abnormal growth which starts in the corner of the eye but can grow over the cornea. Researchers from Penn State are hoping that a new recipe for making glass will further improve the protection offered by UV blocking sunglasses. The team has discovered that adding cerium oxide to phosphate glass could result in sunglasses, windows and solar cells that block UV light more effectively and have increased radiation resistance.

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