Hello! I have been through your question. Related your concern I think this is conjunctivitis probably bacterial. You should know that conjunctivitis could be caused by viral infections, bacterial infections and allergic reaction.When the conjunctivitis is bacterial usually has a thick yellow or green discharge and when has thin, clear drainage from the eye itching, burning, or feeling like there s sand in the eye often is a viral infection or an allergic reaction.What I suggest for your mother is to meet an ophthalmologist and to define better the diagnosis and to start eye drops (tobradex drops) or ointments and if need it oral antibiotic. I wish your mother a quick recovery. I hope my answer help you.