Burning & stinging (eye disorder); taste perversion. Headache; conjunctival inj, blurred vision, corneal erosion, ocular itching, tearing; sinusitis. Dorzolamide: eyelid inflammation/irritation; nausea; asthenia/fatigue. Timolol: Signs & symptoms of ocular irritation (eg, burning, stinging, itching, tearing, redness) including blepharitis, keratitis, decreased corneal sensitivity, & dry eyes.