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Clinical Neuro-Optometry > MIDTERM > Flashcards

MIDTERM Flashcards

1
Q

It is the line that connects visual thresholds

A

Isopter

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2
Q

It uses a black-felt background

A

Tangent screen

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3
Q

It has a semi-black stitching

A

Tangent screen

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4
Q

T/F
Test target is the white button at the center

A

T

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5
Q

T/F
Test object is the white button at the center of the screen

A

F- objects placed at the tip of wand

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6
Q

Advantages of tangent screen

A

More sensitive than confrontation test or FCVF

Provides accurate charting of central and paracentral VF defects

Useful in testing patient with hysterical fields

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7
Q

If you are checking the right eye, the location of the blindspot is at

A

Right

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8
Q

If you are checking the left eye, the location of the blindspot is at

A

Left

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9
Q

Purpose of tangent screen

A

To assess the integrity of the central 30 degrees (radius) of the patient’s field of vision

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10
Q

Equipment use in tangent screen

A

• Tangent screen

• Thirty to fifty 1 to 2 mm diameter nonglossy, short black pins

• Test target (1, 2, 3 or 5 mm diameter white test object attached to a black non glossy wand)

• Eye patch

• Tangent screen should be a flat, non reflective, black screen usually made of cloth, with a small white object attached to the center of the screen to serve as a fixation target. On most tangent screens, the fixation target is surrounded by concentric circles, stitched into the surface of the screen at intervals of 5 degrees when viewed from 1 meter

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11
Q

Extent of Binocular visual field

A

180 degrees

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12
Q

Extent of common bino field

A

120

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13
Q

Extent of monocular field

A

150

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14
Q

Extent of temporal crescent

A

30 degrees

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15
Q

Extent of VF nasally

A

60

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16
Q

Extent of VF superiorly

A

55-60

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17
Q

Extent of VF inferiorly

A

70

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18
Q

Extent of VF temporally

A

90-100

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19
Q

The shape of a monocular VF

A

Horizontal oval

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20
Q

Eye position of relative VF

A

Fixed

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21
Q

Head position of relative VF

A

Steady

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22
Q

Paraorbital structures of relative VF

A

Limited

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23
Q

Eye position of absolute VF

A

Fixed

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24
Q

Head position of absolute VF

A

Moving

25
Q

Paraorbital structures of absolute VF

A

Not limited to

26
Q

Highest area of sensitivity of an island

A

Peak of an island

27
Q

Highest area of sensitivity of hill of vision

A

Peak of the hill

28
Q

Blind area of an islamd

A

Bottomless pit

29
Q

Blind area of hill of vision

A

Beyond the borders of the hill

30
Q

Presentation of stimulus/target of known size and intensity outside the borders of VF or within blindspot

A

Kinetic peri

31
Q

It is the science of measuring visual field

A

Perimetry

32
Q

Target is being moved. From the point of invisibility to point of visibility

A

Kinetic peri

33
Q

is useful to determine borders of larger or deeper visual field defects

A

Kinetic

34
Q

s better at detecting small scotomas (e.g. early glaucomatous VF change)

A

Static peri

35
Q

In TS, the center refers to the peak of the island/hill or also called the

A

Point of fixation

36
Q

T/F
In TS, when you move the wand away from the center, what happens in the island/hill is that it also goes down. So when it goes down away from the peak, px’s sensitivity to the target also decreases.

A

T

37
Q

T/F
In TS, when you place the wand outside the borders/extent, px cannot detect it because it is already beyond his visual field

A
38
Q

Test target of tangent

A

White button

39
Q

To screen for previously unnoted visual field defects.

A

Confrontation test

40
Q

Should be arranged concentrically

A

Interlacing

41
Q

more on the temporal than nasal with soft isometric lines with smooth progression

A

Accordion field

42
Q

The technique is generally effective only for substantial field losses.

A

FCVF

43
Q

Colorless → gray →

A

Blue

44
Q

Colorless → yellow → _______ → red

A

Terraccotta

45
Q

lines are bent away

A

Macropsia

46
Q

lines are bent towards each other

A

Micropsia

47
Q

Appearance: 2 diagonal linesintersect at center of the grid

A

Chart 2

48
Q

Used for patient with a central scotoma that cannot fixate the central dot

A

Chart 2

49
Q

Appearance: similar to the first but squares are red

A

Chart 3

50
Q

Useful for patients with suspected central or cecocentral scotomas

A

Chart 3

51
Q

common in cases of patients who were held captive in war and are malnourished.

A

Nutritional ambly

52
Q

Appearance: Composed of smallwhite dots (no lines) on a black background

A

Chart 4

53
Q

Purpose: Indicated for patients with one or more paracentral scotoma making it easier to delineate the affected areas.

A

Chart 4

54
Q

Appearance: Chart consists of 20white horizontal lines evenly spaced by 5 mm on a black background

A

Chart 5

55
Q

to facilitate the identification of “oriented” metamorphopsia which primarily affects lines going in one direction

A

Chart 5

56
Q

Appearance

  • Similar to 5th chart except its made of black lines on a white background
A

Chart 6

57
Q

Chart is meant to facilitate the observation of metamorphopsia along the reading area

A

Chart 6

58
Q

Smaller grid is intended to facilitate detection of subtle visual disturbances in the macular area

A

Chart 7

59
Q

Useful for high myopic patients (who held at the punctum remotum of the uncorrected eye)

A

Chart 7

Clinical Neuro-Optometry (4 decks)

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