Potentially, allergic reactions, temporary light burning sensation in the eye; may increase IOP w/ prolonged use, irreversible lens opacity in childn; herpes simplex keratitis, corneal perforation in an existing inflammation, fungal infections, aggravation of corneal bacterial infection, upper eyelid droping, pupil dilatation; wound healing disorders (after corneal injuries); hypersensitive reactions w/ itching, oedema or eczema of the eyelid; (for eye drops only) cloudy patches on the cornea due to Ca build-up during treatment in some patients w/ severe corneal damage.