Severe Eye Pain at Closing Time: Acute Angle-Closure Glaucoma
At 4:15 p.m. on a Friday, a 64-year-old woman walks into a Maryland optometry practice without an appointment. She reports six hours of severe right-eye pain, nausea, blurred vision, and colored halos around lights. She drove herself and insists the problem is 'just a migraine.' Her right eye acuity is 20/200; the cornea is hazy, the pupil is mid-dilated and fixed, and Goldmann tonometry reads 52 mmHg. The left eye is normal. The optometrist has topical timolol, pilocarpine, and oral acetazolamide available. The nearest ophthalmologist is 35 minutes away and the office is closing. The patient lives alone, has no family nearby, and refuses to go to the emergency department because she has no insurance. She asks for eye drops and a prescription and says she will drive home to rest.
1. What is the likely diagnosis, and why can the optometrist not simply treat the pressure and send the patient home?
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The picture is classic for acute angle-closure glaucoma: severe unilateral pain, nausea, halos, hazy cornea, a mid-dilated fixed pupil, and an intraocular pressure of 52 mmHg. This is an ocular emergency because elevated pressure can permanently damage the optic nerve within hours, and the definitive treatment is usually laser peripheral iridotomy or another surgical/ophthalmologic intervention, not eye drops alone. The optometrist's duty is to lower pressure promptly while arranging emergency ophthalmologic care. Within Maryland optometric therapeutic authority, the optometrist may use topical timolol and pilocarpine and, if the Board formulary permits it, oral acetazolamide. The key reasoning is that these measures are temporizing. Sending the patient home with drops would breach the standard of care because it delays definitive treatment and risks irreversible vision loss.
2. How should the optometrist manage the patient's refusal to go to the emergency department or see the ophthalmologist?
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The optometrist should first assess whether the patient has decision-making capacity and is making an informed refusal. The risks of delay, including permanent blindness and severe pain, must be explained in plain language, along with the alternatives: immediate transfer by ambulance, a direct call to the on-call ophthalmologist, or emergency department evaluation. Because the patient drove herself and has acute visual impairment plus nausea, allowing her to drive is unsafe. The optometrist should offer to call emergency medical services, contact any emergency contact the patient authorizes, and document the refusal in detail. If the patient still refuses, the optometrist should not abandon her: arrange the safest available follow-up, give written instructions, and document the discussion. The legal and ethical principle is informed refusal, not surrender of professional responsibility.
3. What documentation and communication steps are essential in this encounter?
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The record should include the time of arrival, chief complaint, visual acuities, tonometry readings for both eyes, slit-lamp findings, the diagnosis or differential, all medications administered or prescribed, and the response to treatment. It should record the ophthalmology practice contacted, the time of contact, the person spoken to, and the referral instructions given. If the patient refuses transfer, document exactly what was explained, the risks discussed, the patient's words, the offer of ambulance transport, and any emergency contact notified. The optometrist should also send a copy of the record or a summary to the receiving ophthalmologist and document that transmission. Good documentation protects the patient and demonstrates that the optometrist met the standard of care despite the refusal.