<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi doctor, Ive been experiencing some redness, swelling, and itchiness in my eyelids. My eyes also feel dry and gritty. I think I might have blepharitis.  <response>: Yes, it sounds like you have blepharitis. The medications you need to take are azithromycin ophthalmic, erythromycin ophthalmic, and ocular lubricant. 