Regional guide

Eye health in the United States

Clinically reviewed · Last reviewed 2026-06-13

Where care usually starts

Community optometrists provide comprehensive eye exams, glasses and contact lenses, and refer to ophthalmologists for surgery or complex disease. Access and cost vary widely by insurance, state and rural versus urban location.

  • Private vision plans or medical insurance for exams and disease treatment
  • Medicare covers glaucoma screening for high-risk groups and diabetic eye exams
  • Children's vision screening through schools and paediatric visits
  • Safety-net clinics and FQHCs where insurance is limited

Conditions most often seen

Uncorrected refractive error remains the leading cause of blurred vision. Among age-related disease, cataracts, glaucoma, AMD and diabetic retinopathy account for much treatable blindness.

Screening priorities

People with diabetes should have dilated retinal exams on a schedule advised by their clinician — often yearly. Adults over 40 with African, Hispanic or family glaucoma history benefit from regular pressure checks. AMD monitoring uses home Amsler grids when advised.

Emergency eye symptoms

The same red flags apply nationwide: sudden vision loss, chemical splash, penetrating injury, acute painful red eye with nausea or halos, and rapid increase in floaters with flashes. Use emergency departments or urgent eye clinics — not delayed telehealth alone.

Frequently asked questions

Does Medicare cover eye exams?

Routine glasses exams are not covered under standard Medicare, but medical eye disease visits, diabetic retinal exams and glaucoma screening for eligible groups are. Medicare Advantage plans vary.

How often should US adults have eye exams?

Many guidelines suggest every one to two years for healthy adults, more often with diabetes, glaucoma risk or existing eye disease. Follow your clinician's advice.

When should I go to the ER for an eye problem?

Sudden vision loss, chemical injury, severe trauma, or sudden painful vision loss with halos need emergency care immediately.