Exam 1 Flashcards

1
Q

Describe impairment

A

The deterioration of or weakening of the function of the organ or part

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2
Q

Give an example of impairment

A

Macular degeneration impairs the macula

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3
Q

Describe disability

A

When you are impaired and you can’t do your job

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4
Q

Describe a handy cap

A

You lose function because you are impaired

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5
Q

Moderate visual impairment is described as

A

Being worse than 20/60 OR 20/70 worse

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6
Q

Does vision impairment mean legal blindness?

A

NO

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7
Q

Word for word what is criteria 2.02?

A

Loss of visual acuity: remaining vision in the better eye after best correction is 20/200 or less

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8
Q

Word for word what is criteria 2.03A

A

Contraction of the visual field in the better eye: the whitest diameter subtending an angle around the point of fixation, no greater than 20°

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9
Q

If you CANNOT read ANY letters on 10/50 line but you can read on the 10/60 or 10/80 are you LEGALLY blind?

A

Yes

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10
Q

If you are 10/60+1, are you legally blind?

A

NO

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11
Q

If you are 20/63-2/+1 are you legally blind?

A

NO

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12
Q

If you are 20/125+1 are you legally blind based on ETDRS chart?

A

NO

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13
Q

A stimulus on perimeter is 19 dB is this dimmer or bright?

A

Dimmer

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14
Q

The Framington study tested which group?

A

Middle class white ppl

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15
Q

The Beaver Dam study tested what group?

A

Wisconsin white

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16
Q

The Baltimore eye study tested which group?

A

Urban blacks and whites

17
Q

Which group had the highest rate of Legal Blibdness based on WHO?

A

Sub Saharan African. 1.4%

18
Q

In US adults above 40, how many are legally blind?

A

0.5%. 1 in 200.

19
Q

In US adults above 40, how many are FUNCTIONALLY blind?

A

0.05%. 1 in 2000

20
Q

A patient is defined as functionally blind if they cannot:

A

Cannot see Optotypes. HM or worse

21
Q

What % of Medicare Benificiary are visually impaired?

A

3%

22
Q

Among young adult, which gender is most likely to be visually impaired?

A

Guys

23
Q

What are the criteria for the Lighthoise definition?

A

VA worse than 20/60 in the good eye. VF worse than 20 degree along widest meridian. Reduced contrast sensitivity

24
Q

If a patient only complains of having g issues with their hobbies, is a referral to low vision warranted?

A

No. Refer only if ADLs are affected

25
Q

How large are newspaper print based on M notation?

A

1M

26
Q

What does fluently mean when it comes to newspaper?

A

You need double acuity of newspaper

27
Q

Your patient reads 2M size print at a test distance of 20cm. How is this recorded

A

0.2/2M

28
Q

Your patient reads 2M size print at a test distance of 20cm. How is this recorded

A

0.2/2M

29
Q

What test distance is referred to as when saying reduced Snellen?

A

Near

30
Q

16 point letter size is how much in M notation?

A

2M

31
Q

How should you test if your patient has aphakia, pseudophakia, or presbyopia?

A

Use their near add

32
Q

Why is single letter performance sometimes better than continuous text?

A

Crowding effect

33
Q

When should you check pupils?

A

After you complete your initial exam.

34
Q

should you give the highest or lowest powered device to a patient?

A

Least powerful to achieve goal.

35
Q

True or false: “dipping” is considered to be trial frame refraction

A

False. Dipping is not TF Rx

36
Q

When measuring stenopaic slit, how much should be added to lid thickness?

A

1mm