Which antibiotics are sometimes used in treating dry eye? (Posted: 3 dec 2004)

Drugs in the tetracycline family. Doxycycline is by far the most frequently prescribed of all of them for dry eye.

What do they do? (posted: 3 dec 2004)

We're not doctors, but our understanding is that they help to liquefy the meibomian gland secretions (which sometimes become hardened and block the glands, resulting in a destablised tear film). By unclogging the glands and getting things flowing properly, the lipid layer of the tear film is improved, which is tested clinically with the tear break-up time test.

Should I try doxycycline ? (posted: 3 dec 2004)

If you have a destable tear film, it is something you may want to consider. However, like many drugs you should not take it when pregnant or nursing; and there are also potential side effects. Check with your doctor for more detailed information.