Pocket Emergency Medicine (Pocket Notebook Series) 3rd Ed.

EYE PAIN/REDNESS

Approach

• Ask about FB exposure, chemicals, trauma, contact lens use, freshwater exposure

• Always check visual acuity. Use topical anesthetics (tetracaine, proparacaine) for exam.

• Complete eye exam: Visual acuity (corrected), visual fields, external inspection, periorbital soft tissue & bones, extraocular movement, pupils (including swinging light test for afferent pupillary defect), pressure (tonometry), slit lamp (lids, conjunctiva, sclera, cornea w/ fluorescein, anterior chamber, iris, lens), funduscopy

Acute Angle-closure Glaucoma

Definition: Increased IOP due to ↓ aqueous outflow. Generally due to reduction in the angle of the anterior chamber in setting of the dilated pupil pushing against trabecular meshwork.

History

• Sudden onset of severe unilateral pain, HA, nausea, vomiting, blurry vision, halos

• May be triggered by dim light, mydriatic drops, stress, sympathomimetics

Physical Findings

• Unilateral perilimbal eye injection, ↓ VA, “steamy” (cloudy) cornea, nonreactive midsize pupil (5–7 mm), shallow anterior chamber, ↑ IOP >21 mmHg, firm globe

Treatment

• Immediate optho consult

• Reduce aqueous production: Timolol 0.5% 1–2 drops q30min (avoid if CI to systemic βB) or acetazolamide 500 mg IV, then 250 q6h

• Facilitate aqueous outflow (miotics): Pilocarpine 2% 1 drop q15min until pupil constricts

• Decrease vitreous volume (osmotics): Mannitol 1–2 mg/kg IV over 30–60 min

Disposition

• Per optho recommendations. Admit for intractable vomiting or need for systemic agents.