A 62-year-old man leans into triage with one hand over his right eye, describing a curtain of darkness that slid up from the lower vision while he was reading the morning paper. He’s calm but uneasy, pointing to a swarm of new black specks and a flash that cut across the side of his sight an hour ago. The room is bright, his exam otherwise ordinary, but his words keep circling the same unnerving theme: something is missing from the picture. He’s waiting to hear whether this is a problem that can safely wait.

— What’s your move? Read on.

Before you read
  • Which findings separate a macula-on emergency from a lower-acuity macula-off case?
  • What bedside move should you avoid because it can worsen the injury?

When to Think of It

Monocular flashes, floaters, a curtain or field cut, or sudden painless loss of peripheral vision. Think of it when the patient says vision is “missing,” “shadowed,” or “drawn closed,” especially after trauma, high myopia, prior surgery, or a history of detachment in the other eye.

Sick or Not Sick

The single fork is macula-on vs macula-off. Macula-on detachment is vision-sparing only until it isn’t; macula-off is still urgent, but the immediate pressure is greatest to save the macula before central vision is lost.

The First Fifteen Minutes

No medication fixes this.
  • If globe rupture is possible: place a rigid eye shield now, keep NPO, give antiemetic if vomiting threatens eye pressure — ondansetron 4–8 mg IV because retching raises intraocular pressure.
  • If pain/nausea present: ondansetron 4–8 mg IV and acetaminophen 650–1000 mg PO or IV as needed, because comfort helps prevent Valsalva.
  • Do not patch the eye, press on it, or check a tonometer if open globe is on the table.

Definitive Care & Disposition

Urgent ophthalmology evaluation is required, with timing driven by macular status and detachment extent. Most patients need operative repair (pneumatic retinopexy, scleral buckle, or vitrectomy) and should be kept NPO with eye protection until seen. Disposition is typically urgent specialty-directed management, often same-day or next-day depending on macula status and local ophthalmology guidance.

How This One Kills

The classic failure is dismissing a “floater” complaint as benign until the detachment reaches the macula. Once central vision is lost, recovery is much worse.
The Differential — What Else Looks Like This
  • Posterior vitreous detachment — flashes/floaters without a true field defect; confusing it delays the retinal tear check.
  • Central retinal artery occlusion — sudden painless monocular vision loss, but usually profound and not curtain-like; confusing it with detachment misses stroke-style escalation.
  • Ocular migraine — transient shimmering visual symptoms that resolve; confusing it with detachment delays eye exam.
  • Vitreous hemorrhage — floaters and haze without a peripheral field curtain; confusing it for detachment can miss a tear.

The Second-Day Story

Older adults, diabetics, and post-op patients may describe only blurred vision, a gray veil, or “just not seeing right” rather than a dramatic curtain. In partial detachments the exam can look deceptively normal unless you press for field loss, flashes, and floaters; if the story sounds retinal, treat it as retinal until ophthalmology rules it out.
Back to Our Patient
Back to our patient: the 62-year-old man with the “curtain” over his right eye and new flashes/floaters has a classic retinal detachment presentation. He is stable, so the key call is not resuscitation but rapid recognition of a likely macula-threatening injury, avoidance of eye pressure, and immediate ophthalmology involvement for urgent repair. He gets a rigid shield, antiemetic support if needed, remains NPO, and is dispositioned for emergent ophthalmologic evaluation with operative planning.
Patient Presentation to Attending
How you’d present this patient on the floor — tight, pertinent positives and negatives, no rambling
“This is a 62-year-old man with sudden painless right-eye vision loss that started an hour ago while reading, described as a curtain rising from below, with new flashes and floaters. He denies eye pain, headache, trauma, or neurologic deficits, and he’s had prior myopia but no infectious symptoms. Exam shows intact pupils, no external trauma, and a visual field defect by confrontation in the right eye; I’m concerned for retinal detachment, possibly macula-on. I’m avoiding pressure on the eye, keeping him NPO, giving antiemetic if needed, and calling ophthalmology urgently for same-day evaluation and repair planning.”

Study Directive

  • Draw the retina from memory and mark how a superior detachment causes an inferior visual field defect.
  • Practice a 30-second retinal detachment history: flashes, floaters, curtain, trauma, prior surgery, high myopia.
  • Drill the “macula-on vs macula-off” decision and state how it changes urgency.
  • Review when to avoid tonometry and when to place a rigid eye shield.
  • Teach back the operative repair options: pneumatic retinopexy, scleral buckle, vitrectomy.

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