Pregnancy Risk Category C
How supplied
Ophthalmic solution: 2%
Action
Inhibits carbonic anhydrase in the ciliary processes of the eye, which decreases aqueous humor secretion, presumably by slowing the formation of bicarbonate ions, thereby reducing sodium and fluid transport, resulting in a reduction in intraocular pressure (IOP).
Indications & dosage
Increased IOP in patients with ocular hypertension or open-angle glaucoma-
Adults: 1 drop into conjunctival sac of affected eye t.i.d.
Adverse reactions
CNS: headache, asthenia, fatigue.
EENT: ocular burning, stinging, discomfort; superficial punctate keratitis; ocular allergic reaction; blurred vision; lacrimation; dryness; photophobia; bitter taste; iridocyclitis.
GI: nausea.
GU: urolithiasis.
Skin: rash.
Interactions
Drug-drug. Oral carbonic anhydrase inhibitors: may cause additive effects. Don't administer concomitantly.
Effects on diagnostic tests
None reported.
Contraindications
Contraindicated in patients with hypersensitivity to drug or its components.
Nursing considerations
Patient teaching
*Liquid contains alcohol. **May contain tartrazine. †Canada ‡Australia §U.K. OTCOver the counter
Reactions may be common, uncommon, life-threatening, or COMMON AND LIFE-THREATENING