What eye symptoms need emergency care right now?

Go to the ER or call your eye doctor immediately for: a sudden shower of new floaters, camera-like flashes of light, a dark curtain or shadow crossing your vision, sudden vision loss, or severe eye pain with nausea and halos around lights. These can signal retinal tear, retinal detachment, or angle-closure glaucoma.

How long can I wait to see a doctor for a new floater?

A single new floater without flashes or a shadow needs a dilated eye exam within a few days, not weeks. Only a dilated exam can confirm the retina is intact. If the floater comes with flashes, a shower of dots, or a curtain, treat it as same-day emergency.

Can eye problems be symptomless until they're serious?

Yes. The back of the eye has no pain receptors, and diseases like glaucoma and early macular degeneration can progress silently. That's why regular dilated exams matter even when nothing feels wrong, and why urgency levels in this guide are based on symptoms plus risk, not pain.

Medical information reviewed by NP Bate, Ed.S. • Last reviewed: 2026-09-01 • Not a substitute for professional care.

When to See an Eye Doctor

Your eyes don't have pain receptors in the back, so serious problems can be silent until it's late. This guide breaks down urgency levels so you don't under-react (or over-panic).

Go Now (ER or Retina Specialist Today)

These are vision emergencies where hours matter. Don't wait for an appointment. Don't "see how it goes." Go to the nearest ER with an ophthalmology consult, or call a retina specialist's emergency line.

Sudden shower of new floaters + flashes

Like someone shook a snow globe in your eye. Often means the vitreous tore the retina (retinal tear). Laser today = no detachment. Wait = possible surgery.

Curtain, shadow, or veil in peripheral vision

A dark curtain creeping from the side, top, or bottom. Classic retinal detachment. Vision loss spreads toward center. Emergency surgery needed.

Sudden painless vision loss in one eye

Central retinal artery occlusion (eye stroke). 90-minute window for any chance of recovery. Go to ER with stroke protocol.

Severe eye pain + nausea + vomiting + halos

Acute angle-closure glaucoma. Pressure spikes to 40–60 mmHg. Optic nerve damage in hours. ER for pressure-lowering meds + laser iridotomy.

Chemical splash or foreign body

Irrigate IMMEDIATELY with clean water/saline for 15+ minutes WHILE someone calls 911 or drives you to ER. Don't wait to finish rinsing.

Sudden double vision + droopy pupil

Could be cranial nerve palsy, aneurysm, or tumor. ER for imaging. Don't drive yourself.

See Soon (Within 1–7 Days)

Not an emergency, but don't put it off. These often mean something treatable is brewing.

New floaters (stable, no flashes)

Likely PVD. Needs dilated exam to confirm no retinal tear. Schedule within 1–2 weeks. If flashes start → ER.

Persistent blurred or distorted vision

Wavy lines, central blur, trouble reading. Could be wet AMD, macular edema, or cataract progression. Retina or comprehensive exam within 1–2 weeks.

Eye pain + light sensitivity + redness

Could be uveitis, keratitis, or scleritis. Needs slit-lamp exam and often steroid drops. Don't wait— inflammation damages tissue.

Sudden increase in prescription (myopia)

Could be cataracts (nuclear sclerosis), diabetes (lens swelling), or keratoconus. Comprehensive exam within 1–2 weeks.

Chronic red eye not improving with OTC drops

If Visine/clear eyes makes it worse (rebound), or if it's been weeks: could be dry eye disease, blepharitis, or something else. See OD/MD.

Diabetic? Any vision change = now.

Diabetic retinopathy/macular edema progresses fast. Don't wait for annual exam. Retina specialist within days.

Routine (Annual or As Recommended)

No symptoms? You still need checks. Many sight-threatening diseases are silent until late.

Age 40–54

Every 2–4 years

Baseline for glaucoma, cataract, presbyopia

Age 55–64

Every 1–3 years

Glaucoma, AMD, cataract risk rises

Age 65+

Every 1–2 years

High AMD, glaucoma, cataract, PVD prevalence

Diabetes (any age)

Annual (min)

Diabetic retinopathy, often no symptoms until advanced

Family history of glaucoma/AMD

Every 1–2 years

Genetic risk = earlier, more frequent screening

High myopia (>−6.00 D)

Annual

Retinal tear/detachment, glaucoma, myopic maculopathy risk

Contact lens wearers

Annual

Corneal health, fit, GPC, neovascularization check

On high-risk meds (steroids, plaquenil, tamoxifen)

Per doctor (often 6–12 mo)

Drug toxicity screening

Which Doctor Do You Need?

Ophthalmologist (MD/DO)

Medical doctor + surgical training. Diagnoses and treats ALL eye diseases. Does surgery (cataract, glaucoma, retina, LASIK, etc.).

Retinal tears/detachment
Wet AMD (injections)
Glaucoma surgery
Cataract surgery
Complex infections/trauma

Optometrist (OD)

Doctor of Optometry. Primary eye care. Exams, prescriptions, diagnoses/manages most eye diseases (glaucoma, dry eye, AMD monitoring), refers for surgery.

Routine exams + glasses/contacts
Dry eye management
Glaucoma monitoring (most states)
AMD monitoring / referrals
Pre/post-op care

Retina Specialist (MD)

Ophthalmologist + 1–2 yr fellowship. Only retina. The "cardiologist of the eye." You're referred by your OD or general ophthalmologist.

Retinal detachment/tears
Wet AMD (injections)
Diabetic retinopathy/edema
Macular holes/puckers
Complex vitreous surgery

Before You Go: What to Bring & Expect

📋 Bring These

Current glasses & contact lens boxes (not just prescription)
Sunglasses — you'll be dilated (light sensitive for 4–6 hrs)
Medication list (including supplements, eye drops, steroids, plaquenil, tamoxifen)
Insurance cards (medical + vision — they're different!)
List of symptoms with dates (when started, triggers, what helps/worsens)
Family eye history (glaucoma, AMD, retinal detachment, keratoconus)

⏱️ What to Expect

1
Check-in & history — technician asks about symptoms, meds, history.
2
Vision check — read the chart (with/without glasses), refraction ("better 1 or 2?").
3
Eye pressure — puff of air (NCT) or yellow drop + blue light (Goldmann). Painless.
4
Dilation drops — takes 15–30 min to work. You'll wait in waiting room (bring audiobook/podcast).
5
Dilated exam — doctor looks at retina, optic nerve, macula, vessels with bright light & lens.
6
Discussion & plan — findings, treatment, follow-up. Ask questions! "What would you do if it were your mom?"

Pro tip: Can't drive dilated? Bring a driver or plan for rideshare. Bring a hat/sunglasses for the ride home.

Questions Worth Asking

"What exactly do I have? (Get the medical name)"

"What caused it? Is it hereditary?"

"What are my treatment options, all of them?"

"What happens if I do nothing?"

"What are the risks and benefits of each option?"

"How will this affect my daily life (driving, reading, work)?"

"What symptoms mean I should call you immediately?"

"When is my next check, and what are we looking for?"

"Are there lifestyle changes that help (diet, smoking, supplements)?"

"Can I get a copy of my images/OCT for my records?"

Still Not Sure? Start Here.

Pick the condition that matches your symptoms. We'll walk you through what's normal, what's not, and what to do next.

Floaters & PVD Macular Health Dry Eye & Discomfort