Ophthalmology Flashcards
Blunt trauma commonly occurs due to
Tennis ball injury
Cannalicular lacerations repaired using
CRAWFORD silicone tube or MINI- MONOKA stent
Vertical tears in Descemet Membrane
Birth Truama
Most Common manifestation in Blunt Trauma
Hypha due to hemorrhage from Circulus Iridis Major.
Treatment- Elevate Head of patient + Steroids
Blunt Trauma changes in Pupil
Initially miosis then mydriasis.
Iridodialysis- root of iris detached from ciliary body- D shaped pupil- Monocular Diplopia.
Angle Recession- ciliary body ruptures near anterior attachment.
Vossius Ring
Imprint of miotic pupil on anterior capsule of lens
Rosette Cataract
Posterior Subcapsular Cataract
Subluxation of Lens
Lens moves in direction of intact zonules
Dislocated Lens
MC into vitreous,
360 zonular fibre rupture
Commotio Retinae
Posterior pole, due to Berlins Edema
Pathognomic for previous blunt trauma
Bucket Handle Appearance
Traumatic Optic Neuropathy
Only light perception present,
RAPD/ AAPD only clinical sign present
Ghost Cell Glaucoma
Candy Stripe Sign
Rupture of globe site
Vicnity of Schlemm’s Canal- Superonasal Limbus and Sclera- 3mm posterior to Limbus
MC IOFB
Iron and Steel- Toxic Metallic
Caterpillar Hair
Granulomatous Iridocyclitis- Opthalmia Nodosa
Seidels Test
Fluroscein dye
Blow out fracture site
Floor of the orbit
Panda/ Racoon Eyes
Orbital Roof Fractures
Only Acid that penetrates Cornea
Hydrofluoric Acid
Oculae Surface Burns Classification
Roper Hall and
Dua Classification
Medial wall of orbit
- Body of sphenoid.
- Medially- Ethmoidal Air Sinuses.
- Thinnest
MCC of Orbital Cellulitis
Ethmoiditis
Floor of Orbit
- Palatine
Infraorbital Foramen
Infraorbital nerve, artery and vein
Lateral wall
Greater wing of sphenoid
Roof
Lesser wing of sphenoid
Supraorbital Foramen
Supraorbital Nerve and Artery
Optic Canal
Between Roof and Medial Wall- lesser and greater wing of sphenoid-
Optic Nerve and Ophthalmic Artery
Superior Orbital Fissure
Roof and Lateral Wall- lesser and greater wing of sphenoid- 3.4.5- opthalmic, 6th Nerves.
Inferior Orbital Fissure
Maxillary Nerve, Infraorbital Vein and branches of Pterygopalatine Ganglion