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Small animal med. > Ophtho terminology 3 > Flashcards

Ophtho terminology 3 Flashcards

Uvea - Fundus

1
Q

Uvea

A

Iris, ciliary body, choroid

Vascular tunic of globe

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2
Q

Uveitis

A

breakdown of blood ocular barrier (inflammation)

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3
Q

Anterior uveitis

A

inflamed iris and ciliary body

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4
Q

Posterior uveitis

A

inflammed choroid - likely chorioretinitis

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5
Q

Panuveitis

A

inflammation of uvea: iris, ciliary body and choroid

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6
Q

Endophthamitis

A

inflammation of all structures internal to fibrous tunic

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7
Q

Fibrous tunic

A

cornea and slera

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8
Q

Panophthalmitis

A

inflammation of all structures of the globe

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9
Q

Aqueous flare

A

PATHOGNOMIC sign: anterior uveitis - proteins suspended in anterior chamber

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10
Q

Keratic precipitates

A

PATHOGNOMIC sign: uveitis -cellular debris adheres to corneal endothelium - constant cycling convection currents

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11
Q

ciliary flush

A

360˚ deep corneal neovascularization

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12
Q

Fibrin

A

PATHOGNOMIC sign: uveitis - develops in the eye and adheres to delicate structures -> synechia

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13
Q

Hypopyon

A

PATHOGNOMIC sign: uveitis - wbc settles in anterior chamber

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14
Q

miosis

A

constriction of the pupil

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15
Q

Dyschoria

A

abnormally shaped iris - posterior synechia?

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16
Q

Synechia

A

adhesion of the iris to the lens (posterior)

Adhesion of the iris to the cornea (anterior)

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17
Q

Iris bombe

A

360˚ posterior synechia - AH becomes entrapped within posterior chamber causing iris to bulge forward

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18
Q

Hyphema

A

blood that settles within the anterior chamber - common with uveitis and indicative of large breakdown in blood ocular barrier
Hypertension and coagulopathies?

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19
Q

Hypotony

A

Decreased intraocular pressure

Consistent with anterior uveitis

20
Q

Cycloplegia

A

paralysis of ciliary body muscle - atropine

can relieve pain from spasms

21
Q

Nuclear sclerosis

A

hardening of the lens that occurs natural in animals.
Lens appears cloudy - doesn’t indicate vision loss
6-7yrs

22
Q

Cataract

A

Any opacity of the lens or lens capsule that prevents light passage

23
Q

Parallax

A

utilizing the appearance of one object relative to another to determine depth

24
Q

Lens zonules

A

small collagen fibrils arising from ciliary body that attach to the equater of the lens, securing the lens position wihtin the eye

25
Q

Intumsecent cataract

A

Swollen

common in diabetics - driven by osmotic effect of sorbitol trapped in lens capsule

26
Q

Phacoemulsification

A

modern technique for cataract surgery - lens broken by US eneregy and aspiration

27
Q

Aldose reductase

A

enzyme that converts glucose to sorbitol - causes osmotic pulling effect

28
Q

Lens luxation

A

complete detachment of the lens from lens zolnules - shifts side to side revealing aphakic cresent

29
Q

Aphakic crestn

A

Phakic = lens

Lens subluxation displaces cresent where lens is visible displaced

30
Q

Iridodonesis

A

movement of iris that occurs 2˚ to lens instability

31
Q

Phacodonesis

A

movement of lens 2˚ to lens instability

32
Q

Glaucoma

A

vision loss 2˚ to elevated intraocular pressure and damage to optic n. and retina

33
Q

Carbonic anhydrase

A

enzyme in ciliary body that aids in production of AH

Target for glaucoma tx

34
Q

Buphthalmos

A

enlargement of globe - glaucoma

35
Q

Haab’s Stria

A

fractures in descement’s membrane that occur 2˚ to buphthalmos and stretching of globe
subtle white streaks across cornea

36
Q

Goniodysgenesis

A

abnormal iridocorneal angle conformation - narrowed or closed
sheets of abnormal tissue often coat the angle

37
Q

Gonioscopy

A

Use of goniolens applied to the surface of the eye which allows light to bend into iridocorneal angle and facilitates examination

38
Q

Fundus

A

Interior surface of posterior segment of the eye: retina, optic nerve, choroid

39
Q

Holangiotic vascular pattern

A

entire neurosensory retina gets blood

40
Q

Merangiotic vascular pattern

A

neurosensory retinal vessels localized to horizontal streak on either side of optic nerve
Lagomorphs

41
Q

Paurangiotic vascular pattern

A

neurosensory retinal vessels only near optic enerve

Equids

42
Q

Anangiotic vascular pattern

A

neurosensory retina is absent of any blood vessels

43
Q

Retinal detachment

A

separation of neurosensory retina from retinal pigment epithelium
Intraretinal breach

44
Q

Retinal dialysis

A

tearing of retina from its attachment at the ora ciliaris retinae or from the optic dis in association w/ retinal separation
can be seen hanging from optic nerve or ora ciliarus retinae

45
Q

Hypertensive retinopathy

A

retinal vascular damage caused by systemic hypertension

46
Q

Progressive retinal atrophy (PRA)

A

series of inherited but rarely congenital progressive degenerative conditions affecting neurosensory retina or retinal pigmented epithelium
Associated with progressively impaired vision and blindness

47
Q

Sudden acquired retinal degeneration syndrome (SARDS)

A

Syndrome of unknown etiology characterized by rapid death of photoreceptors causing sudden blindness in dogs
Some dogs exhibit CS indicating Cushings - most do not test positive

Small animal med. (7 decks)

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