Do not use Renicol Eye Drop if you are allergic to any of its components. Inform your doctor if you or your family member has had problems with their blood or bone marrow if you have visual disturbances, severe pain in the eye, sensitivity to light, glaucoma, eye injury, dry eyes, kidney or liver problems, a sensation of having a foreign body in the eye, eye inflammation, if the eye looks cloudy or if the coloured part of the eye looks unusual, or if you have/had eye surgery. Consult your doctor if you are pregnant or breastfeeding. Do not wear contact lenses during the course of treatment with Renicol Eye Drop and for 24 hours after the last dose.