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Low Vision > Clinical Assessment of Low Vision > Flashcards

Clinical Assessment of Low Vision Flashcards

1
Q

What are the care process in low vision?

A

Patient history
Ocular examination
Visual examination
Supplemental testing
Management of visual impairment

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2
Q

Ocular examination consist of? (a-e)

A

Slit-lamp observation
Ophthalmoscopy

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3
Q

What are the Patient history review?

A

Ocular History
Visual function
Medical history
Social history
Specific goals and needs

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4
Q

Give at least 5 Ocular history

A

Diagnosis and onset symptoms
Past, current or planned surgeries or treatment
Stability of vision
Family history pf eye disease
Previous history of eye disease or vision problems
Current pr previous use of spectacles, cl, lv aids
Px understanding of cision condition and implication for functioning

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5
Q

Give at least 5 Visual Functioning

A

Ability to read print and specific reading needs
Other near visual abilities and needs
Intermidiate visual abilities and needs
Distance visual ability and needs
Independent travel ability and needs

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6
Q

Ability to read print and specific reading needs example:

A

Bank statement
Bills
Magazine

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7
Q

Other near visual ability and needs example:

A

Writing, sewing, activities of daily living

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8
Q

Intermediate visual ability and needs example:

A

computer, reading, music

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9
Q

Independent travel ability and needs

A

Driving, yse if public transpo

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10
Q

Quantifies the degree of high contrast vision loss and cleary identified the patient’s Visual Impairment as it related to CC

A

Visual Acuity

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11
Q

Measure VA allows you to?

A

Monitor stability of progression of disease

Assess eccentric viewing posture and skills

Teach basic concept and skills

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12
Q

What charts use in Distance VA?

A

Snellen chart, Feinbloom, Bailey-lovie, Etdrs

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13
Q

Appropriae distances for DVA?

A

10 feet
2 meters
5feet

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14
Q

What happen if they cannot read DVA at 1 meter?

A

They no longer have Distance VA

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15
Q

How to assess Distance Visual Acuity Measurement? Give 5

A

Use appropriate visual chart
Use appropriate testing distance
Evaluate essentric viewing techniques
Assess effect of illumination
Record measutement of very poor vision HM LP NLP

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16
Q

What is the testing distance of low vision patient in snellen chart?

A

4m
3m
2m
1m

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17
Q

Testing distance is the distance at which the letter is held. Leter size represents the distance at which this leter must be held to enable the px with normal vision to read.

A

Snellen chart

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18
Q

It is a type of chart where a unit of measure must be consistent. Test yse in feet, letter must be in feet only.

A

Snellen chart

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19
Q

A type of chart that is very useful to record visual acuity in patients with impaired vision.

A

Feinbloom chart

20
Q

Handheld chart in a spinal bound with flip type book.

A

Feinbloom chart

21
Q

It contains number ranginh from 20ft size to 700 ft size.

A

Feinbloom chart

22
Q

A DVA chart that proposed a set of principle for the design VA chart in 1976 to improve snellen’s chart.

A

Bailey and Lovie charts

23
Q

The same numbers of letter at each size level e.g
5 letters in each row were proposed.

A

Bailey and Lovie Charts

24
Q

Logarithmic size progression in a constant ratio from one size row to the next.

A

Bailey ad lovie charts

25
Q

Spacing between the letters and between the rowd proportional to the letter size

A

Bailey lovie charts

26
Q

Direct chart and cannot be use with mirror

A

Bailey and lovie logmar chart

27
Q

Widely used today VA charts and both consist of 10 letters that were originally selected within each family.

A

Sloand and british letter familes

28
Q

What ate the sloan letters?

A

C, D, H, K, N, O, R, S, V, Z

29
Q

British letters are?

A

D E F H N P R U V Z

30
Q

What letters does ETDRS used?

A

Sloan

31
Q

Logmar is design for ___ direct distance and its letter subtends an angle of ____ mins of an arc at ____ meters.

A

4m
5 min.
40 meters

32
Q

What are the appropriate vision chart in NVA MEASUREMENT?

A

Lighthouse near acuity chart,
Near ETDRS

33
Q

Use the M system alon with testing distance for recording visual acuity.

A

NVAM

34
Q

NVA is meaured at?

A

16 inches mono/bino

35
Q

When determining the functional ability of patient for low vision aids, not only acuity is considered but also ____,____,____,____,_____,

A

Literacy
Accuracy
Reading rate
Reading comprehension
Endurance

36
Q

PX sould read the text sentence a loud, starting from the top of the chart or from several steps above.

A

MN READ CHART

37
Q

The print size and marking on the MN read chart are design for a testing distance of 40 cm.

A
38
Q

A reduce version of ferris-Bailey chart.

A

Lighthouse near test

39
Q

It provide a guide for selecting dioptric power of reading addition bases on test result at two test distance.

A

Light house near test chart

40
Q

What are the objective refraction procedures

A

Autorefraction
Standard techniques with trial lens
Radical retinoscopy
Off-axis retinoscopy
Near retinoscopy
Keratometry

41
Q

What is the Accurate starting point for subjective refraction?

A

Autorefraction

42
Q

It is closer than usual distance, can sometimes facilitiate detection or neutralization of motion and can be helpful when media opacities are present, pupils are small, or the reflex is dull.

A

Radical Retinoscopy

43
Q

It may elicit a brighter reflex expecially in patient who have high myopia.

A

Off-axis retinoscopy

44
Q

What are the assessment of subjective refraction?

A

Trial frame
Just noticeable difference (JND)
Hand-held jackson cross cylinder
Non standard distance
Stenopaic slit
Multiple pinhole

45
Q

Visual Examination consist of?

A

Distance Visual acuity
NEAR VA
Color Vision test
Ocular motility and
Binocular vision assessment
Visual field assessment
Retinoscopy
Subjective Refraction

Low Vision (2 decks)

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