If self-care ineffective after two weeks prescribe:
Chloramphenicol eye ointment 1% one application twice daily for 6 weeks.
On advice of ophthalmology if signs of meibomian gland dysfunction or acne rosacea
Oxytetracycline 500mg every 12 hours for 4 weeks (initial) followed by 250mg every 12 hours for 8 weeks (maintenance)
OR
Doxycycline 100mg daily 4 weeks (initial) followed by 50mg daily for 8 weeks (maintenance)