Hi guys, practicing ophthalmologist here. Feel free to PM with any questions.
1. RDs- when a patient shows up complaining of NEW sudden onset flashes/floaters/curtain/loss of vision, suspect vitreous detachment vs retinal tear or detachment. VAST majority of the time, its vitreous detachment without any retinal pathology. Some patients are at higher risk for RD/RT- high myopes (thick glasses, can not see distance but have very good near vision without glasses), h/o previous RD, family history of RD, h/o cataract or any other eye surgery, trauma. If patient's vision at presentation is "good" ex., 20/40 macula is likely on, if it "poor" ex., 20/200 or worse, macula may be off. Macula on RDs should be fixed in 24 hours, macula off- within a week. The reality of the situation though in a community setting is that even if you get you on call general ophtho guy to come in at 2 am on a Friday night to see flashes/floaters patient and he/she does dx an RD, a retina specialist will NOT come in in the middle of the night to fix it. It's just not done. My advice: if you highly suspect an RD- tell patient to be NPO overnight and go see retina specialist in am. Call them and document conversation/name. You are done.
2. Corneal ulcers- red painful eye most commonly in a contact lens wearer who abuses them (sleeps in them, etc), ONE eye is usually involved, you see a white spot on the cornea with Woods lamp. The bigger the spot, the more pain, the more worried you should be. Small peripheral ulcers- usually Staph, give 4th generation Floroquinolone (Vigamox, etc), every hour while awake until seen by ophtho, Bacitracin ointment for QID and cycloplegia with Cyclopentalate 1% BID if a lot of pain. If large central ulcers- you should be more worried, may be Strep, Klebsiela, Pseudomonas, can chew through cornea quickly and cause endophthalmitis. Need to see ophtho or better yet cornea specialist ASAP and may need fortified antibiotics and close follow up. If no ophtho available for those, send to ivory tower. NEVER GIVE STEROIDS. You are done.
3. Orbital cellulitis- in young kids (less then 5), a bad conjunctivitis may look like orbital cellulitis, need CT orbits WITH contrast to differentiate. In older, look at eye movements and ask about loss of vision and double vision. Look for proptosis. These are orbital signs distinguishing preseptal and orbital cellulitis. Have low threshold for admission and IV antibiotics. If there is an abscess on CT, need ENT or oculoplastcs involved. General ophtho guys won't help with that. You are done.
4. Glaucoma- that's a tough one. Ideally, learn how to use tonopen (needs to be calibrated, need to use a cover). If this thing is not properly calibrated, it will show pressure of 92 (max reading) and you will be calling your ophtho guys in panic 🙂. Learn signs and symptoms of angle closure- mid dilated pupil, steamy cornea, lethargic patient that may be vomiting if pressure is very high, decreased vision. Need to send to ophtho who has access to a YAG laser or send to university. You are done.
5. Trauma- CT is helpful in ruptured globe diagnosis, look for globe deformity, vitreous heme, ask about mechanism of injury (grinding metal on metal? high velocity object?- suspect intra ocular foreign body). If you see "black stuff" on the cornea, that may be iris plugging up cornea rupture. Don't touch, put a shield on the eye, give anti-emetics and 400 mg of IV gatifloxacin, send to university (honestly, if I had a globe rupture, I'd want it repaired in an academic setting and not by a general ophtho who did one five years ago). All trauma patient should eventually see an ophthalmologist, even if not the same day.
Lastly, for red eyes, please do not give Tobramycin or Sulfacetamide. That stuff is toxic to the cornea. You can do Ofloxacin or if really high suspicion for bacterial infection- 4th generation fluoroquinolone. Don't give steroids.
Cheers!