Equine eyelid disorders Flashcards
1
Q
Clinical signs eyelid dysfunction (6)
A
- Gross tissue distortion
- Ulceration
- Changes in mobility
- Epiphora
- Mucopurulent discharge
- Exposure/irritation keratitis
2
Q
Eyelid anatomy (5)
A
- Haired skin
- Tarsal Plate
- Meibomian glands
- Muscle (orbicularis oculi)
- Conjunctiva
3
Q
Eyelid functions (5)
A
- Protect the globe
- Clean and lubricate
- Distribute tear film
- Move fluid into NLD
- Remove debris/foreign bodies
4
Q
What to look for eyelid eval (7)
A
- Symmetry
- Margin position, integrity
- Swelling
- Wounds, ulcerations
- Condition of glands
- Position of lashes
- Effectiveness of blink mech
5
Q
Most common eyelid dz etiology (2)
A
- Trauma
2. Neoplasia
6
Q
Modified Hotz-Celsus
A
surgical repair intropion take out half moon shape of bottom lid
7
Q
H-plasty
A
Surgical technique to remove part of bottom eyelid
8
Q
Beta radiation and strontium radiation
A
Don’t penetrate eyelid well, but good for cornea
9
Q
Intralesional chemotherapy (5)
A
- Series of 8+ injections cisplatin maybes
- Worse before better
- Best as adjunct
- Continue injections until clean bx
- Remission up to 1 yr….
10
Q
PDT (4)
A
Photodynamic Therapy
- photosensitizing agent and light in presence of oxygen to produce a localized phototoxic effect
- Reactive oxygen species formed
- Cytotoxicity via-apoptosis, necrosis, autophagy associated cell death
- Infuse agent into affected tissue-apply light source
11
Q
Sarcoid immunotherapy (4)
A
- BCG (Bacillus-Calmette-Gaerin
- Series intralesional injections
- Worse before better
- Small risk anaphylaxis
12
Q
DIstichiasis
A
Eyelash emerges from meibomian gland
13
Q
Trichiasis
A
Eyelashes grow towards the eyeball
14
Q
Ectopic cilia
A
hair in a place it shouldna be
15
Q
Behavoir of SCC
A
Locally aggressive
-treat early and aggressively
