REVALIDA Flashcards

1
Q

The light sensitive tissue where light is converted into electric signals by rods and cones

A

Retina

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2
Q

Nerve fibers that carry the electric signals from retina to optic chiasm

A

Optic nerve

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3
Q

A structure where nerve fibers cross over to the opposite side of the brain

A

Optic chiasm

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4
Q

Nerve tracts that carry visual information from optic chiasm to LGN

A

Optic tract

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5
Q

Acts as a relay station for visual information, processing, and filtering signals

A

LGN

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6
Q

Carry visual information from LGN to visual cortex

A

Optic radiation

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7
Q

Responsible for processing visual information and creating sensation of sight

A

Visual cortex

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8
Q

Scotoma in which area of depression in which target may seem blurry

A

Relative scotoma

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9
Q

Scotoma in which it is an area where retinal sensitivity cannot be increased

A

Absolute scotoma

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10
Q

Scotoma in which patient is not aware but detected in examination. Usually in peripheral area

A

Negative scotoma

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11
Q

Scotoma which patient is aware. More on central area

A

Positive scotoma

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12
Q

Border of scotoma is zigzag

A

Scintillating scotoma

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13
Q

Scotoma is stationary and does not progress

A

Round scotoma

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14
Q

Scotoma where the point of fixation is affected

A

Central scotoma

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15
Q

Type of central scotoma where the point of fixation is not affected

A

Pericentral

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16
Q

Type of central scotoma that can be on nasal, temporal, superior or inferior

A

Paracentral

17
Q

Central scotoma closer to the blindspot than the fixation point

A

Paracoecal

18
Q

Central scotoma where blindspot is larger than what is expected

A

Pericoecal

19
Q

Central scotoma that affects or joins together central scotoma and blindspot

A

Centrocoecal

20
Q

Shape of pupil

21
Q

Location of pupil

A

Centrally located

22
Q

Normal pupil size

23
Q

Normal pupil size in physiologic state

24
Q

Pupil size considered as dilated

25
Pupil size considered as constricted
1.5mm or less
26
Factors that cause dilated pupils
Dim illumination, far vision, stage 1 anesthesia, mydriatic drugs, emotions, death
27
Factors that cause constricted pupils
Bright illumination, near vision, stage 2 anesthesia, miotics, close eyelids, during sleep
28
Pupils have abnormal shapes
Dyscoria
29
Pupil have different sizes
Anisocoria
30
Pupils have the same sizes
Isocoria
31
Displacement of pupil from the center
Corectopia
32
Excessive pupil constriction
Miosis
33
Excessive pupil dilation
Mydriasis
34
Stimulation of one retina by light produces contraction in the same eye
Direct Light Reflex
35
Stimulation of one retina by light produces contraction in the opposite eye
Consensual Light Reflex
36
Constriction of pupil when a near target is presented
Accommodative Convergence Reflex
37
Unilateral constriction of pupil followed by dilation after closure
Orbicularis oculi Reflex
38
Reflex that is useful to differentiate central from peripheral dysfunction, evaluation for suspected Horner's Syndrome
Ciliospinal Reflex
39
Abnormal pupil size
Adie's Tonic Pupil Horner's Syndrome