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Hes > L16: Visual Impairment > Flashcards

L16: Visual Impairment Flashcards

1
Q

What is visual impairment

A

Being unable to see or unable to see clearly

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2
Q

What is visual acuity

A

The ability to see in detail

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3
Q

How do we test the function of both eyes

A

By a Shellen test

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4
Q

At what distance is letters held at

A

6 metres

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5
Q

What happens to the 6 meters if a person cannot see

A

Gets smaller

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6
Q

How do we test for vision if the person cannot see at 1 metre

A

1) show a number of fingers
2) if they cannot see fingers we do a hand movement
3) if they cannot see hand movement we look for perception of light
4) no perception of light

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7
Q

What does registration of vision impairment depend on

A

How far you can see

Field of vision

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8
Q

What are the 2 categories of vision impairment

A 
Severely sight impair (bling)
Slight impaired (partially sighted)
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9
Q

Which eye is the category based on

A

The better seeing eye

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10
Q

How many groups of severe sight impairment is there

A

3

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11
Q

What are the criteria’s of being group 1 for severely sight impaired

A

Visual acuity worse than 3 metres 60 Snellen

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12
Q

What are the criteria’s for being in group 2 severely sight impaired

A

People who are 3 metres 60 snellen or better
But
Worse than 6/60 and have contraction of visual field

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13
Q

What are the criteria’s for being in group 3 severely sight impaired

A

People who are 6/60 snellen or better
But
Clinically contracted field of vision e.g retinitis pigmentosa

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14
Q

How many groups of sight impaired are there

A

3

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15
Q

What are the criteria’s of group 1 sight impaired

A

People who are 3/60-6/60 snellen with full visual field

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16
Q

What are the criteria’s for being in group 2 sight impaired

A

Between 6/60-6/24 snellen with moderate contraction of filed

17
Q

What are the criteria’s for being in group 3 sight impaired

A

6/18 snellen or better and if they have a marked field defect

18
Q

What are the main causes of eye sight loss

A 
In corrected retracted error e.g glasses not corrected
Age related macular degeneration 
Cataract
Glaucoma
Diabetic eye disease
19
Q

Which age group has a higher occurrence of sight loss

A

Older groups

20
Q

What are the main causes of registerable sight loss

A 
Age related macular degeneration 
Glaucoma 
Cataract 
Retinitis pigmentosa 
Diabetic eye disease
21
Q

What is glaucoma

A

High pressure in the eye that damages the optic nerve

22
Q

What is the normal corrected visual aucity for someone who is not blind or has an impairment

A

6/6-6/18

23
Q

What type of children are at risk of being blind

A

Children who have refractive errors

24
Q

Before what age do you need to correct the refractive error to prevent a child from being permanently bind

A

Before the age of 8

25
Q

Which ethnic groups are at high risk of visual impairment /blindness

A

Black African and Caribbean

South Asian

26
Q

Why is the black African ethnic group at high risk

A

They are at high risk of glacouma and diabetic eye diseases

27
Q

Why is the south Asian at risk of visual impairment/ brindles

A

They are at risk of diabetic neuropathy

28
Q

What is the impact of visual impairment on someone’s life

A 
Lower well-being 
Lack of emotional support 
Essential practical support is missing 
Feeling isolated
Rely on support 
Financial struggles 
Travel and transport 
Poor access to key information
29
Q

What support is available for people with a visual impairment

A 
Government benefits 
Eye clinic liaison officer 
Social worker immobility officer
Voluntary organisations 
Lowe vision aids
30
Q

What are the types of benefit a registered patient can get in terms of visual impairment

A 
Disability living allowance
Personal independence payment 
Reduction to tv 
Tax allowance
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Hes (26 decks)

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