8 months ago I had visited eye doctor near me for eye itching in both eyes. After checking doctor said I had dry eye and prescribed Hylotears drops 3 times a day for 1 month and Maxim L drops for 15 days (First 5 days - 4 times a day, next 5 days - 3 times a day, last 5 days - 2 times a day) After 30 days etching stopped but sometimes itching occurred then I used lubricant drops it stopped. Can lubricant eye drops be used lifetime without any side effect? And last month again itching occurred in both eyes so I repeated the same course again for 1 month of 30 days hylotears and 15 days Maxim L drops, 10-12 days felt good now again itching is there in both eyes specially in inner corner near nose. What should I do?