Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

My Own Deck > Visual Impairment 9- Ageing Eye > Flashcards

Visual Impairment 9- Ageing Eye Flashcards

1
Q

What is madarosis?

A

Loss of lashes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is poliosis?

A

Whitening of eyelashes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are considered a problematic findings in the elderly?

A

Entropian and ectropian

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What corneal changes are seen as part of the again eye?

A 
WTF to ATR
-ve cyl more Vz
Increase thickness of Decemets membrane
Increase epithelium permeability 
Polymegathism 
Pleomorphism
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a crocodile shagreen?

A

Pale grey patches of spacing changes in corneal collagen lamellae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is corneal guttatae?

A

Early stage of fuchs endo dystrophy of the cornea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is associated with arcus snellus?

A

High cholesterol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is Xanthelasma and who is at risk of it?

A

Yellow plaques formed on the eyelid

Elderly women and those with DM and blood LDLs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What 2 conjunctival conditions are very commonly seen in an aging eye?

A

Pterygia

Pinguecula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How is pterygia caused?

A

Accumulation of epithelial cells and mucus

Exposure to wind, dust, sunlight fornprolonged periods

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What sclera changes are common?

A

Yellow tinge= Lipid content

Blue tinge= Thinning

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What structures in the conjunctiva reduce in numbers?

A

Epithelial cells and goblet cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

At what age does tear film become unstable?

A

> 50yrs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What the pupil changes with age and the consequences?

A

Senile miosis:
Decreases retinal illumination
Increased DoF

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the consequences of lens changes?

A

Increased light scatter/yellowing/Fluorophores

Refractive changes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the signs of an ageing retina

A

Decreased thickness in PRL
Increased RPE and BM thickness
Drusen (lipofuscin deposits)

17
Q

What is the result of damaged rods?

A

Increased photostress recovery

18
Q

What part of the visual pathway is effected with age?

A

Retinal ganglion cells are reduced

19
Q

How do fluorophores effect vision?

A

Absorb SWL cones and absorb LWL cones

20
Q

How are fluorophores caused by?

A

Cumulative exposure to solar radiation. Leads to increased light scatter

21
Q

What is veiling luminance?

A

Image degradation due to loss of image contrast

22
Q

How is contrast sensitivity calculated?

A

1/detection threshold

23
Q

In colour vision what defects are seen more with age?

A

Blue/yellow defects

24
Q

What part of the visual field would be effected with age?

A

WHOLE visual field

My Own Deck (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions