Proteccion UVA de los vidrios en los carros es variable

Entre mas capas y el uso de laminas de protección, antirrobo o ruptura son las que filtran UVA y el entintado no es relevante.

Side Windows in Cars Let in Varying Amounts of UVA Light

By Kelly Young

Edited by André Sofair, MD, MPH, and William E. Chavey, MD, MS

Automobile side windows vary widely in their protection from cancer-causing ultraviolet-A light, suggests a small JAMA Ophthalmology study.

A researcher used a handheld meter to measure the UVA light penetrating the driver's side windows and windshields in 29 automobiles made from 1990–2014. On average, front windshields blocked 96% of UVA light, while side windows blocked 71%. Although windshields were fairly consistent in their protection, side window protection ranged from 55% in some 2013 BMW models to 96% in a 2011 Lexus. Tinting had no discernible effect.

To be shatterproof, front windshields contain two layers of glass with a UVA-blocking layer of plastic in between. Side windows, meanwhile, are made of a single layer of glass.

A commentator writes: "It is helpful for ophthalmologists to inform their patients that eye and skin protection may be indicated ... inside an automobile."

JAMA Ophthalmology article (Free)

JAMA Ophthalmology invited commentary (Subscription required)

Background: NEJM Journal Watch Dermatology coverage of UVA radiation and tanning beds (Free

Benjamin Hidalgo-Matlock

Skin Care Physicians of Costa Rica

4000-1054

2208-8206

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