Exotic ophthalmology Flashcards
What issue can eye removal in amphibians lead to
INability to swallow as the bottom of the globe forms the roof of the mouth
What can pox virus cause in parrots
Irritation and swelling around the eye
What would we use to treat conjunctivitis in cockatiels/budgerigars
Tetracyclines; unknown aetiology
What sequelae could we see following infraorbital sinusitis in birds
Lots of pus can fill air spaces in the head, solidify and suck in the eye stopping it closing properly and leading to exposure keratitis
What species is dacrocystitis common in and how do we treat
Rabbits; dental disease can cause nasolacrimal duct obstruction and get pus filled eyes
Treat with oral erythromycin
Which type of guineau pigs need vaseline around eyes from birth
Rex
In which species might we see heretotopic bond formation due to vitamin C being exuded from the ciliary body
Guineau pigs
What can hypovitaminosis A cause in terrapins etc
Epithelial dysplasia
What can lead to lipid keratopathy development in drogs
If they can’t find somewhere to spawn, circulating cholesterol levels rise systemically
How an UV irradiation cause disease e.g with too much supplementation
Cataract due to thiol groups in lens being oxidised
Keratitis
Why can’t we use atropine to dilate the iris in birds and reptiles
Because the iris is striated muscle
Need to use muscle relaxants
Why are inflammatory abscesses in birds and reptiles fibrous rather than liquid
Because they have heterophils not neutrophils
What is dysecdysis and what is it assocaited with
Spectacle retention in snakes
Assocaited with the snake mite Ophionyssus
What consequence does the spectacle have in issues like necrotic stomatisis (mouth rot)
There is a closed system from ocular surface through nasolacrimal duct; if duct gets blocked, the spectacle will swell and can get abscessation in sub-spectacular space
What is the pecten
Eminence of choroidal blood vessels and pigment at back of bird eye
- Moves from side to side as the bird moves and blood vessels exude O2 and nutrients to supply the retina
