Right eye lid swollen with pain in mrng.

My mother who have bp and sugar under control is having a swollen eye lid in the r eye  from two days and no other swellings or anything. In previous month she had similar swell and pain left month twice and got healed due to drops. Now used below tablet(CLOSUN-SP) and drops(TOBASTAR) day before day one dose and yesterday one dose upon which pain got relieved momentarily but again after waking up in mrng pain coming. Due to allergic to antibiotics didn't take other tablet(CEFTAS-200) but pain and swelling is not relieving. So please suggest medicines and if antibiotic is mandatory suggest. Need antibiotic reaction tablet along with it. No history of any other diseases apart from gall bladder operation two years back.  Thankyou.