Ocular Disease Flashcards
Sclerotic Scatter
Get it aligned and then look with naked eye
Optic section
Depth
Conical beam
Dark adaption
Specular reflection
Oculars and beams at equal angel
Indirect illumination
Look off to the side
Is blanching in chemical burns bad or good?
Bad. Indicates ischemia.
Which is the most bad ocular burn?
Alkali. More prevalent too.
Corneal erosion
Can have mitotic pupil and mild anterior chamber reaction
Commotion Retina
Bruising of the retina OS. White. Resolves in 24-48 hours.
Berlins edema
Commotion retina in the macula
Can you do gonio on a hyphema?
No. Wait 1 month post injury to avoid re bleed.
Vossius ring
Pigment on lens due to lens hitting iris. Trauma.
Iriodialysis
Breaking at iris root. Will see a wide band of CB. Monitor for angle recession glaucoma due to damage of TM.
Orbital fracture
Most common to occur in maxillary bone in posterior medial. Crepitus, pain, diplopia, restriction. infraorbital hypesthesia, angle recession, etc.
Gonio and orbital fracture
None for 4 weeks
Blowing nose and orbital fracture
don’t do it for 48 hours after trauma.
Purtscher’s Retinopathy
Occurs with CPR or strangulation. Diffuse retinal hemorrhages, exudates, and cotton wool spots.
Choroidal rupture
Temporal to ON. Concentric to ONH. Risk of CNVM. Occurs with trauma.
Preseptal cellulitis
Most common. Occurs secondary to skin trauma like bug bites or acute hordeolum. no pain to mild tenderness, eyelid edema, no orbital congestion, ptosis, warmth.
Orbital Cellulitis
An infection posterior to septum. Can occur from a sinus infection. Will have diplopia, EOM restriction, APD, eye pain, malice, reduced color vision, diplopia.
What can orbital cellulitis cause
meningitis or cavernous sinus thrombosis
What can diabetics and immunocompromised get?
mucormycosis.
How to tell if preseptal or septal.
Preseptal will not have decreased VA, Pain on eye movements, fever, proptosis, EOM restriction.
Thyroid Eye Disease (Graves)
Females. MG correlation. TSH receptor antibodies attacking EOMs and can also affect thyroid gland. Tendon sparing. IM SLO.