Lens and Vitreous Flashcards
1
Q
Define microphagkia.
A
Small lens
2
Q
Define aphakia.
A
Absence of lens
3
Q
What is the most common cause of cataracts in dogs?
A
Hereditary
4
Q
What is the most common cause of cataracts in cats and horses?
A
Uveitis
5
Q
What is an incipient cataract?
A
< 15 % opacification
6
Q
What is an immature cataract?
A
15 - 99% opacification
7
Q
What is a mature cataract?
A
100% opacification
8
Q
What is a hypermature cataract?
A
Resorption of the cataractous lens
9
Q
What is involved in a cataract workup?
A
- Gonioscopy
- Ophthalmic exam
- Electroretinogram
- U/s
- Physical exam
10
Q
What are the 4 concerns post op cataract surgery?
A
- Uveitis
- Retinal detachment
- Glaucoma
- Endophthalmitis
11
Q
What causes primary lens luxation?
A
Hereditary condition
12
Q
Which breeds are predisposed to primary lens luxations?
A
Terrier breeds
13
Q
What are the possible causes of secondary lens luxation?
A
- Glaucoma
- Uveitis
- Trauma
- Intraocular tumors
- Cataracts
