Falls Can Kill You. Here’s How to Minimize the Risk. (Published 2019)

Falls are the leading cause of fatal and nonfatal injuries among older adults. Every 19 minutes in this country, an older person dies from a fall.

Dry Eyes Afflict Many of Us. Here’s What to Do About It.

That gritty, itchy feeling in your eyes can arise from many causes, including too much screen time, and eye drops may only make it worse.

Who Gets Sick in Space? Orbital Tourists May Offer Better Clues.

Commercial spaceflight brings a more diverse cross section of humanity beyond Earth, helping medical researchers collect data.

How Vision Loss Can Affect the Brain

A growing body of evidence suggests that when older people’s brains have to work harder to see, declines in language, memory, attention and more could follow.

Opinion | America’s Enduring Arrogance

It’s a problem for all presidents, including Biden.

What If You Could Become Invisible to Mosquitoes?

Using Crispr, scientists have taken the first step toward creating a mosquito that is blind to human hosts.

Opinion | How Life Looks Through My ‘Whale Eyes’

A filmmaker devises a few experiments to help his family experience his disability — and show how a little imagination can make us all more empathetic.

These Birds Didn’t Have Chlamydia or West Nile. But They’re Still Dying.

After birds died in several states, many blinded with crusted-over eyes, wildlife officials were able to rule out a number of pathogens as the cause.

On Medicare and Need Dental Work? Beware a Big Bill.

The traditional version doesn’t cover dental, vision or hearing care. Advocates hope for change under a Biden proposal.

Many People Have a Vivid ‘Mind’s Eye,’ While Others Have None at All

Scientists are finding new ways to probe two not-so-rare conditions to better understand the links between vision, perception and memory.

Blinded by Brighter Headlights? It’s Not Your Imagination.

The rising use of light-emitting diodes and the popularity of pickups and S.U.V.s have prompted complaints about the glare and intensity of headlights.

A Young Mother Found Herself Cripplingly Weak. Did Her Operation Cause This?

Three months after having bariatric surgery, she was vomiting several times a day and couldn’t even move her eyes.

Scientists Partially Restored a Blind Man’s Sight With New Gene Therapy

Using a technique called optogenetics, researchers added light-sensitive proteins to the man’s retina, giving him a blurry view of objects.