Belmont Eye Center News

New research has revealed a surprising connection between how well you sleep and the health of your eyes. A recent study of more than 6,700 Americans over age 40 suggests that poor sleep patterns may increase the risk of glaucoma — a leading cause of irreversible blindness worldwide.

The Link Between Glaucoma and Sleep Problems

The study analyzed data from the National Health and Nutrition Examination Survey (2005–2008). Participants were evaluated for glaucoma using optic nerve imaging and visual field testing, while also answering detailed questions about their sleep habits — including sleep duration, difficulty falling asleep, disturbances, and daytime drowsiness.

Among the most notable findings:

  • People who slept 10 or more hours per night were three times more likely to have glaucoma-related optic nerve damage than those who slept around seven hours.
  • Falling asleep either too quickly (under 9 minutes) or too slowly (30+ minutes) was linked to a doubled risk of glaucoma.
  • Individuals who slept 3 or fewer or 10+ hours per night had three times the odds of missing vision areas compared to those with normal sleep patterns.
  • Those who experienced daytime sleepiness and memory issues were twice as likely to have visual field loss.
  • People who struggled to focus on hobbies due to fatigue were three times more likely to have vision loss.

Experts believe that disrupted sleep may affect intraocular pressure (the fluid pressure inside the eye) or blood flow to the optic nerve — both key factors in glaucoma development. Sleep disorders such as sleep apnea may also contribute to these changes, further increasing risk.

Why Regular Eye Exams Matter

The American Academy of Ophthalmology recommends a baseline comprehensive eye exam at age 40 — the time when early signs of glaucoma and other age-related eye diseases can appear.

If you’ve been experiencing sleep disturbances, frequent fatigue, or unexplained vision changes, it’s a good idea to schedule a professional evaluation. Early detection of glaucoma can prevent irreversible vision loss.

Schedule Your Eye Exam Today
Protect your vision and overall eye health. Book your appointment at Belmont Eye Center in New York City.

Sources: American Academy of Ophthalmology, National Health and Nutrition Examination Survey