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Flashcards in Vision Problems 1 Deck (28):
1

Gradual progressive loss of vision should always be watched closely as it may indicate...

brain tumor

2

Sudden loss of vision in one eye in older adults generally suggests what type of problem

vascular

3

Sudden loss of vision in kids

optic neuritis

4

Transient vision loss in one eye

TIA

5

Transient loss of vision in both eyes

Basilar Artery Insufficiency

6

Short lived loss of vision in one eye (just a few seconds)

Papilledema

7

Amblyopia

lazy eye

8

Numerator in 20/20

Testing distance

9

near reflex?

miosis (constriction), convergence, accomodation

10

The presence of a non-reactive pupil in one eye that does not respond to consensual stimulation indicates the presence of a defect in the efferent arc of the pupillary reflex.

And if that non-reactive pupil reacts to consensual stimulation then the abnormal pupil is non-reactive due to defect in the afferent

11

A scotoma in only one eye is usually associated with

retinal or optic nerve lesion in that eye

12

One of the common causes of optic nerve disease in young to middle aged pts is optic neuritis. What are the complaints in optic neuritis

Loss of central vision
Positive RAPD (abnormal)
Fundus exam will show either a normal optic disc or a swollen optic disc
Patient will complain of loss of color brightness.

13

centrocecal scotoma?

when the scotoma connects with a physiologic blind spot

14

Natural history of optic neuritis

Vision gets poor quickly and then returns to normal slowly. Usually vision returns but if the initial epsiode is severe or rerepeat episodes occur, you may get permanent loss.

15

Treatment for significant visual loss due to optic neuritis

IV steroids

16

Retrobulbar ON?

Optic disc looks normal

17

Papillitis

Optic disc swollen

18

Telling the difference between Papilledema and Papillitis?

- both discs usually involved in papilledema and only rarely with papillitis.

- Patients with papilledema will not usually have an RAPD (Relative Afferent Pupillary Defect) based solely on the disc swelling. Patients with Papillitis will.

_ visual acuity usually normal in pts iwth paiplledema

19

Optic neuritis generally seen in what dz

MS

20

Lesion at optic chiasm

Reduced VA in one or both eyes
Bitemporal hemianopsia- blindness in the outer half of the visual field of both eyes
Optic atrophy- asymmetric

21

Most common cause of a lesion at the optic chiasm?

Pituitary Adenoma

22

The more aneterior the lesion is located in the post chiasmal pathway....

The more incongruus the visual field is

23

The more posterior the lesion is located in the post chiasmal pathway....

The more congrupous the visual field defect usually is

24

Papilledema

SERIOUS
Two most common causes are
1) Tumor
2) Pseudotumor cerebri

25

Ischemic optic neuropathy

- acute loss of vision in an older pt
- usually only one eye
- afferent pupl defect present
- disc is sollen and pale
- Visual defect generally altitudinal... that is it is superior or inferior and respects the horizontal midline where optic neuritis respects teh vertical midline

26

Must rule out what with optic neuropathy

temporal arteritis

27

central retinal artery occlusion appears like what on fundic exam

Pale.
Optic disc will be pale and arteries narrowed
TEMPORAL ARTERIRITS MUST BE RULED OUT

28

Central retinal vein occlusion

causes hemorrhagic infarct of the retina
disc is swollen and hyperemic with prominent venous distension.