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Ocular Anatomy and Physiology : > Colour Defects > Flashcards

Colour Defects Flashcards

1
Q

What are the two types of PHOTORECEPTORS IN THE RETINA?

A

Rods and Cons

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2
Q

Rods or Cones : Scotopic Vision

A

Rods

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3
Q

Rodes or Cones : Dim / Dark Light

A

Rods

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4
Q

Rodes or Cones : Lights In Shades Of Grey

A

Rods

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5
Q

Rodes or Cones : Night Time

A

Rods

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6
Q

Rodes or Cones :
Decrease in Visual Acuity
Decrease in Colour Vision
Decrease in Edge Detection

A

Rods

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7
Q

Rodes or Cones :

Pigment : Rhodopsin

A

Rods

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8
Q

Rodes or Cones : Retinal and Opsin

A

Rods

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9
Q

Rodes or Cones :

Density : Peripheral of Retina

A

Rods

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10
Q

Rodes or Cones : Photopic Vision

A

Cones

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11
Q

Rodes or Cones : Bright Light

A

Cones

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12
Q

Rodes or Cones :
Good for Visual Acuity
Good for Colour Vision
Good for Edge Detection

A

Cones

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13
Q

Rodes or Cones :

Pigment : Photopsin

A

Cones

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14
Q

Rodes or Cones :

Density : Central of Retina (Fovea)

A

Cones

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15
Q

Cones Pick Up What?

A

Red :
Blue
Green

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16
Q

Define TRANSDUCTION

A

Rods and Cones responds to light THE SAME WAY.

Process is the same/

17
Q

Where are Rods and Cones located?

A

Retina

18
Q

What are Rods and Cones?

A

Light Photo-receptors

19
Q

MONOCHROMACY

A

NO COLOUR

NO CONES, ONLY RODS

20
Q

DICHROMACY

A

DEPENDS WHICH CONE / OPSIN IS MISSING

21
Q

PROTANOPIA

A

Missing RED Opsin

22
Q

DEUTERANOPIA

A

Missing GREEN Opsin

23
Q

TRITANOPIA

A

MISSING BLUE OPSIN

24
Q

TRICHROMACY

A

NORMAL COLOUR VISION

ALL CONES ARE PRESENT

25
Q

ANOMALOUS TRICHROMACY

A

ONE CONE OPSIN IS FAULTY BUT STILL FUNCTIONS AT SOME LEVEL

Ocular Anatomy and Physiology : (30 decks)

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