Recent Blog Articles
Can wearing contacts harm your vision?
Vegan and paleo: Pluses and minuses to watch
Postpartum anxiety is invisible, but common and treatable
Right-sizing opioid prescriptions after surgery
Ready for your routine medical checkup?
Nicotine addiction explained — and how medications can help
Is your vision impaired? Tips to cope
Misgendering: What it is and why it matters
Healthy brain, healthier heart?
Stories connect us
Diseases & Conditions
Blinded by the night
Poor night vision is the result of changes in the pupil, lens, and retina. Does eating carrots help? Probably not for well-nourished Americans.
It's been said that the eyes are the windows to the soul. At a more mundane level, they also say a lot about how old we are. With advancing years, we're prone to a number of serious — and less-serious (but bothersome) — conditions of the eye.
To continue reading this article, you must log in.
Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.
- Research health conditions
- Check your symptoms
- Prepare for a doctor's visit or test
- Find the best treatments and procedures for you
- Explore options for better nutrition and exercise
I'd like to receive access to Harvard Health Online for only $4.99 a month.Sign Me Up
Already a member? Login ».
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.