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Details

Visual Perception
Exam III
85
Medical
Graduate
10/28/2012

Additional Medical Flashcards

 


 

Cards

Term
Which range of wavelengths has complements in the extra-spectral purples?
Definition
490-565
Term
pairs of colors that are different wavelengths but can look identical under certain lighting
Definition
Metamers
Term
Protan peak wavelength
Definition
530nm
Term
Protan white point
Definition
492 nm
Term
Protan copunctal point 
Definition
700nm
Term
Protans have trouble seeing which colors on the plate tests with grey/white backgrounds?
Definition
Reds
Term
Deutan photopic peak
Definition
557nm
Term
Deutan neutral point
Definition
498nm
Term
Deutan black points
Definition
In extra-spectral purples
Term
White point of tritans
Definition
569nm
Term
Common cause of tritanopia
Definition
Diabetic Retinopathy
Term
Tritan copunctal point
Definition
380nm violet
Term

Kollner's Rule

Type of Deficiency?

ARMD

Definition
Outer Retinal -->Blue yellow
Term

Kollner's Rule

Type of Deficiency?

Nuclear Sclerosis

Definition
Media opacity-Blue yellow
Term

Kollner's Rule

Type of Color Deficiency?

Diabetic Retinopathy

Definition
Outer retina- blue yellow
Term

Kollner's Rule

Type of Color Deficiency?

Leber's Optic Atrophy?

Definition
Inner retina --> Red Green
Term

Kollner's Rule

Type of Color Deficiency?

Toxic amblyopia

Definition
Inner retina --> Red Green
Term

Kollner's Rule

Type of Color Deficiency?

Pathway lesions?

Definition
Red green
Term
Name 2 color vision defects with autosomal inheritance (instead of x-linked)
Definition
Tritanopia and Rod monochromacy
Term
Name 1 color vision defect with dominant inheritance (rather than recessive
Definition
Tritanopia
Term

Digitalis

Which Chromatopsia?

Definition
Xanthopsia
Term

Thiazide Diuretics

Which Chromatopsia?

Definition
Xanthopsia
Term

Cataractous lens

Which Chromatopsia?

Definition
Xanthopsia
Term

Amphetamines

Which Chromatopsia?

Definition
Cyanopsia
Term

Plaquenil

Which Chromatopsia?

Definition
Cyanopsia
Term

Birth control pills

Which Chromatopsia?

Definition
Cyanopsia
Term

Viagra

Which Chromatopsia?

Definition
Cyanopsia
Term

Central Retinal Artery Occlusion

Which Chromatopsia?

Definition
Cyanopsia
Term

Short time after cataract removal

Which Chromatopsia?

Definition
Cyanopsia
Term

Oral Atropine

Which Chromatopsia?

Definition
erythopsia
Term

Ergotamine

Which Chromatopsia?

Definition
eRYTHOPSIA
Term

Sulfa drugs

Which Chromatopsia?

Definition
Erythopsia
Term

Cyclopentolate

Which Chromatopsia?

Definition
Erythopsia
Term

Aphakics

Which Chromatopsia?

Definition
Erythopsia
Term

Solar Retinopathy

Which Chromatopsia?

Definition
Erythopsia
Term

Alcohol

Which Chromatopsia?

Definition
Poly
Term

Aspirin

Which Chromatopsia?

Definition
Chloropsia
Term

Quinine

Which Chromatopsia?

Definition
Cyanopsia
Term

Toluene

Which Chromatopsia?

Definition
Chloropsia
Term
Which part of the brain is affected in hemiachromatopsia and cerebral bilaterl acrhomatopsia?
Definition
V4 (monkeys) or IT
Term

100Hue Test Chart

Describe Protan defect

Definition
On the green side of yellow and straight across from that
Term

100 Hue Result Chart

Describe Deutan

Definition
red side of yellow and straight across from that in the blues
Term

100 Hue Results Chart

Tritan Defects?

Definition
At the reds and straight across from that
Term
Anomaloscope uses which wavelength in the test field?
Definition
590 yellow
Term
Anomaloscope uses which 2 wavelengths in mixture field?
Definition
546 green and 670 red
Term

Normal mixture field setting in anomaloscope

(for mixture and for brightness)

Definition

40-45 is normal

17 

Term

Anomaloscope

Protan setting of mixture field

Definition
45-73
Term

Anomaloscope

Deutan mixture field setting

Definition
0-40
Term

Anomaloscope

Who will need to adjust brightness to see a match between test and mixture fields

Protans or Deutans?

Definition
Protans, deutans generally leave it at normal setting of 17
Term
Which of the color vision tests is hardest to pass?
Definition
Pseudoisochromatic plates (HRR and Ishihara)
Term
2 wavelengths where trichromats see color changes easily
Definition

495nm

590nm

Term
Trichromats most desaturated wavelength
Definition
578nm (yellow)
Term
Invariant Blue
Definition
478nm
Term
Invariant Green
Definition
503nm
Term
Invariant yellow
Definition
578nm
Term
Visible light begins at
Definition
380nm
Term
Visible light ends at 
Definition
700nm
Term
S-cone peak absorption
Definition
426 nm
Term
M-cone peak absorption
Definition
530nm
Term
Variant L-cone peak absorption (in tetrachromacy)
Definition
552nm
Term
Normal L-cone peak absorption
Definition
557nm
Term
Melanopsin peak absorption
Definition
483nm
Term
Rhodopsin Peak Absorption
Definition
507nm
Term
Blue changes to green
Definition
495nm
Term
Green changes to yellow
Definition
565nm
Term
Yellow change to orange
Definition
590nm
Term
orange change to red
Definition
620 nm
Term

Retino-tectal pathway

VOR

Coordinates inner ear movement with eye movement

Definition
Vestibular Nucleus
Term

Retino-tectal pathway

Feature binding with auditory and visual inputs, close to geniculate nuclei

Definition
Pulvinar
Term

Retino-tectal pathway

Optokinetic Nystagmus

Definition
Pre-Tectum
Term

Retino-tectal pathway

Reflex saccades and reflex foveation

Definition
Superior Colliculus
Term

Retino-tectal pathway

Maintains homeostasis (circadian rhythm, pineal gland etc. 

Definition
Hypothalamus
Term

Retino-tectal pathway

VALVE

Definition
LGN
Term
Magno layers of LGN
Definition
Ventral 2 (bottom 2 in pics)
Term
LGN ipsilateral layers
Definition
2,3,5
Term
LGN contralateral layers
Definition
1,4,6
Term
Which of LGN cells are color opponent
Definition

Magno are NOT

just Parvo and Konio

Term

Parvo, Magno, Konio

Sustained Temporal response?

Definition
Parvo
Term

Parvo, Magno, Konio

Transient temporal response

Definition
Magno
Term

Parvo, Magno, Konio

Fastest transmission time

Definition
Magno
Term

Parvo, Magno, Konio

Linear?

Non-linear

Definition

Parvo are linear

Magno are non-linear

Term

Parvo, Magno, Konio

Responds to high spatial frequency

Definition
Parvo
Term

Parvo, Magno, Konio

Responds to high temporal frequency

Definition
Magno
Term
Clonazepam
Definition
xanthopsia
Term
Tobacco
Definition
Erythopsia
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