Medicare covers a glaucoma test once every 12 months for people at high risk for glaucoma. All people with Part B who are at high risk for glaucoma are covered. Here is the information posted by CMS (Center for Medicaid and Medicare Services).

Glaucoma tests
Medicare Part B (Medical Insurance) covers glaucoma tests once every 12 months if you’re at high risk for glaucoma. You are at high risk if one or more of these applies to you:
- You have diabetes.
- You have a family history of glaucoma.
- You are African American and age 50 or older.
- You are Hispanic and age 65 or older.
Your costs in Original Medicare
- You pay 20% of the Medicare-approved amount and the Part B deductible applies.
- In a hospital outpatient setting , you also pay a copayment .
Note
To find out how much your test, item, or service will cost, talk to your doctor or health care provider. The specific amount you will owe may depend on several things, like:
- Other insurance you may have
- How much your doctor charges?
- Whether your doctor accepts assignment
- The type of facility
- Where you get your test, item, or service
Note
Your doctor or other health care provider may recommend you get services more often than Medicare covers. Or they may recommend services that Medicare doesn’t cover. If this happens, you may have to pay some or all of the costs. Ask questions so you understand why your doctor is recommending certain services and whether Medicare will pay for them.