Diseases of equine orbit Flashcards
Common indications for orbital US (3)
- Exophthalmos
- Orbital trauma
- Unable to visualize posterior segment
Common indications for rads (3)
- Exophthalmos
- Orbital/facial trauma
- NLD dz
Indications for CT (4)
- Eval fractures
- Brain absceses/tumors
- Orbital absceses/tumors
- Sinuses
Enophthalmos may accompany or mimic (2)
- Microphthalmos
2. Phthisis bulbi
If Exopthlamos exam tips: (3)
- compare angle of eyelashes
- relative prominance of globe
- Size of palpebral fissure
Most common fracture types (3)
- dorsal orbital rim
- zygomatic arch
- poll
Fractures must be repaired when (3)
- displacement of globe
- impingement of globe
- functional restriction of globe
Most common orbital tumor
SCC
Retrobulbar anesthesia
- 22 ga 3.5 inch spinal needle
- Bend to curve of orbital wall
- 8cc bupivicaine, 4 cc lidocane, hub of epinephrine
Hub of epinephrine
what duz this meen?
Transpalpebral enuc indications: (2)
- Neoplasia
2. Infection
Benefit of transconjunctival enuc
Less surgical trauma
Intraorbital prosthetic common complication
50% extrude
-only put in under general anesthesia
CT good for detection of what kind of changes?
Osseous
MRI
- T1
- T2
T1: greater spatial resolution and def of normal stuff
T2: better eval of pathologic processes
Orbital trauma, think about
young, male fractious, confined…etc
Most dramatic form of orbital cellulitis
Septic
SCC (3)
- Frequently originate from other part of globe/periocular tissue
- High index of susp if tumor ID’d on eyelids or globe
- Biopsy and imaging to assess extent
TX SCC (5)
- Excision
- Exenteration
- Radiation tx
- Intralesional chemo
- Palliation (Pirioxicam)
