My mother (58+ yrs) is under treatment for Hypothyroidism (Eltroxin 50 mcg), Hypertension (Olmezest 20 mg) & Osteoarthritis (stage-2) of knee joints. Since past couple of months, she faced the problem of seeing every distant object in black color as well as in blurry image. Recently she visited an eye doctor, who suggested this is because of the eye gel getting dried up. She had cataract also, but that's mostly at initial phase. 1) What could have caused this eye gel to be dried ? Is it something serious & related to other medical problems ? 2) They have prescribed 2 eye drops - Aqualube & Nepaflam daily 3-4 times for 3-months. Is it safe to to use Nepaflam for such a long period ?