Opthalmology Flashcards
Name of sign that has infrequent blinking in grave’s disease
Von graefe’s sign
MC clinical feature of grave’s ophthalmopathy is?
Dalrymple’s sign/upper lid retraction
Non-pulsatilw proptosis (compressible), increases on bending, no thrill or bruit, MRI shows retrobulbar mass, diagnosis?
Orbital varix
Pesudoproptosis is seen in?
Buphthalmos
First muscle to be affected in cavernous sinus thrombosis?
LR
Infection from dangerous areas of face spreads to cavernous sinus via?
Opthalmic veins
Sx of choice for panopthalmitis is?
Evisceration
Uveal melanocytes are derived from?
Neural crest
By when the optic groove appears?
3 weeks/22 days
What structure is connected to the whitnall’s tubercle?
Check ligament of lateral rectus
Location of optic foramen
Two roots of the lesser wing of the sphenoid
MC structure damaged by damage to optic canal?
Optic nerve and opthalmic vein
Intrinsic ocular muscle supplied by parasympathetic innervation is?
Sphincter pupillae
Cornea is supplied by which nerve?
Long ciliary nerve
Cause of coloboma of optic disc?
Incomplete closure of optic fissure
Fleischer’s ring is located in?
Epithelium
Vortex vein invasion is commonly seen in?
Malignant melanoma
TOC Keratoconus early stages
Toric lenses
45 yo man constantly changing refractive error is seen in?
Uncontrolled diabetic state
Cause of unilateral proptosis
Optic nerve glioma
Which staphyloma occurs in high myopia?
Posterior staphyloma
Devic disease definition and it doesn’t cause what?
It is autoimmune disorder that affects optic nerve and spinal cord but it doesn’t cause night blindness
Neoantigen causing sympathetic opthalmia is?
Rentinal S antigen
Trauma to one eye releases this protein and causes autoimmune response in both eyes
Dalen fuch nodules seen in
Sympathetic opthalmitis