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Articles on Eyes

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Tears prevent your eyes from drying out and protect them from irritation and infection. Vizerskaya/E+ via Getty Images

Can you cry underwater?

An ophthalmologist explains how important tears are to keeping your eyes feeling good and working well – whether you’re on dry land or swimming in a body of water.
Watching a solar eclipse is always fascinating. During the phase when the moon completely obstructs the sun, daylight gives way to a deep twilight sky. (Shutterstock)

On April 8, 2024, parts of Ontario, Québec, the Maritimes and Newfoundland will see a total eclipse of the sun. Here’s how to get ready for it.

Some parts of North America will witness a total solar eclipse in April 2024. This may seem far away, but you should think about preparing for this rare and fascinating phenomenon.
When fish like this netted cod are exposed to mercury, it accumulates in certain organs, including the lenses of their eyes. Yvette Heimbrand

The lenses of fishes’ eyes record their lifetime exposure to toxic mercury, new research finds

A new study shows that a time stamp can be put on mercury that accumulates in fish eyes, offering a window into their lifetime exposure.

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