Melasma: What are the best treatments?

Melasma is a skin condition affecting mostly women with darker skin. It cannot be fully prevented in those most likely to develop it, and there is no cure, but consistent sunscreen use is critical, and numerous treatment options are available.

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Poliovirus in wastewater: Should we be concerned?

Thanks to vaccination, the US has been polio-free since 1979, and the spread of this disease has been interrupted in most countries. But worldwide eradication of polio has been elusive, and traces of the virus were recently found in wastewater in London.

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Corneal transplants becoming more common

While not as routine as cataract surgery, corneal transplants are becoming more common. A number of things can go wrong with the cornea, especially as people get older, and a partial-thickness or full-thickness transplant can restore vision.

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