Hypromellose is typically used in certain eye surgeries as a surgical aid. These eye surgeries include cataract removal and lens implantation procedures. Basically, Hypromellose “helps maintain the shape of the eye during surgery as well as protect the tissues of the eye from damage due to surgical instruments”. Bear in mind that the presence of certain health issues may affect the use of Hypromellose, especially diabetes and glaucoma. So, if you have any of these medical problems, make sure you tell your doctor before using the drug in question. You should also tell them if you are pregnant or breastfeeding so as to get their professional advice on whether or not Hypromellose will be safe for you. As far as the common side effects are concerned, drugs.com lists them as follows: blurred vision, change in vision, decreased vision, or loss of vision. You should, of course, check with your doctor immediately if any of these side effects occurs.