ocular Flashcards
1)The inner layer of the cornea is the…
a)stroma
b)corneal epithelium
c) descemets membrane
d) basal membrane
C
which is the posterior chamber?
B
3) For standardised imaging of the eye, where should the marker of the probe be?
a) lateral and ventral
b)medial and ventral
c) lateral and dorsal
d) medial and dorsal
D
4)What is the normal depth of the anterior chamber?
a)1-2mm
b) 3-4mm
c)6-8mm
d) 8-10mm
B
5) which part of the eye becomes more visible ultrasonographically with age?
a)the lens nucleus
b) the lens cortex
c)the ciliary body
d) iris
A
6) the optic canal runs through which bones of the skull?
a) The temporal bones
b) The pterygoid bones
c) The lacrimal bones
d) The sphenoid bones
D
7) The most common intraocular tumour in dogs is… (can be more than one)
a) benign melanoma
b) lymphoma
c) malignant melanoma
d) adenocarcinoma
A,C. associated with the anterior uvea usually.
The below image most like represents a:
a) Incipient cataract
b) Immature cataract
c) Mature cataract
d) Hypermature cataract
D
9) when cholesterol crystals sink to the bottom of the liquified vitreous body, this is called…
a) asteroid hyalosis
b) synchysis scintillans
c) vitreal degeneration
B
10) what percentage of dogs with immature cataracts also have vitreal degeneration?
a) 25%
b)30%
c) 55%
d)89%
C
what do the red and white asterisks represent?
a) white- ciliary cleft , red- posterior chamber
b) white- posterior chamber, red- ciliary cleft
c) white- posterior chamber, red- anterior chamber
d) white posterior chamber, red- zonules
B
the ciliary cleft is usually _______ to the sclera and cilairy body when normal
a) hyperechoic
b) isoechoic
c) hypoechoic
C
the uvea of the includes…
a) the choriod plexus only
b) the choriod and iris
c) the choroid iris and ciliary body
d) the choroid, iris, ciliary body and zonules (suspensory ligaments)
C
the hyaloid canal or the globe contains which structure in a mature dog?
a) hyaloid artery
b) usually nothing nothing (potential space)
c) lymph vessels
d) vitreous body
B.
The vitreous body attaches primarily
at the region of the optic disc (vitreous base) and at the ora ciliaris (where the uvea joins the ciliary body) retinae and forms the hyaloid fossa, a fibrillar dense indentation, to adapt the posterior surface of the lens. The vitreous body is densely packed at the posterior surface of the lens except at the attachment of the hyaloid canal (Cloquet’s or central canal).This canal extends from the posterior surface of the lens through the vitreous body to the optic disc on the posterior surface of the globe. This potential space in the vitreous body contains the hyaloid artery in an embryonic eye. remnants may be present in adults
a) corneal inclusion cyst
b) normal
c) sequestrum
c) iris inclusion cyst
A
a) morgagnian cataract
b) incipient cataract
c) mature cataract
d) nuclear sclerosis
D
a) morgagnian cataract
b) incipient cataract
c) mature cataract
d) nuclear sclerosis
A
a) morgagnian cataract
b) cortical and perinuclear cataract
c) hypermature cataract
d) nuclear sclerosis
B
a) lenticonus and cataract
b) capsular ectasia and cataract
c) persistent hypertrophic primary vitreous
d) lens rupture
A
a) lenticonus and cataract
b) capsular ectasia and cataract
c) persistent hypertrophic primary vitreous
d) capsular irregularity
B
a) lenticonus and cataract
b) capsular ectasia and cataract
c) persistent hypertrophic primary vitreous
d) anterior presentation of the vitreous
C
?
lens rupture and uveitis
what do the yellow arrowhead and yellow arrows show
arrow heads- vitreal detachment
arrow- retinal detachment
