Like all medicines, this medicine can cause side effects, although not everybody gets them.
If the patient develops allergic reactions including hives, swelling of the face, lips, tongue, and/or throat which may cause difficulty in breathing or swallowing, they should stop using this medicine and seek immediate medical advice.
The following side effects have been reported with dorzolamide either during clinical trials or during post-marketing experience: Very common side effects (more than 1 user in 10): Burning and stinging of the eyes.
Common side effects (1 to 10 users in 100): Disease of the cornea with sore eye and blurred vision (superficial punctuate keratitis), discharge with itching of the eyes (conjunctivitis), irritation/inflammation of the eyelid, blurred vision, headache, nausea, bitter taste, and fatigue.
Uncommon side effects (1 to 10 users in 1,000): Inflammation of the iris.
Rare side effects (1 to 10 users in 10,000): Tingling or numbness of the hands or feet, temporary short sightedness which may resolve when treatment is stopped, development of fluid under the retina (choroidal detachment, following filtration surgery), eye pain, eyelid crusting, low pressure in the eye, swelling of the cornea (with symptoms of visual disturbances), eye irritation including redness, kidney stones, dizziness, nose bleed, throat irritation, dry mouth, localized skin rash (contact dermatitis), severe skin reactions, allergic type reactions such as rash, hives, itching, in rare cases possible swelling of the lips, eyes and mouth, shortness of breath, and more rarely wheezing.
Reporting of side effects: If the patient gets any side effects, talk to the doctor or pharmacist. This includes any possible side effects not listed in this monograph.