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Eye exam > Eye Quiz > Flashcards

Eye Quiz Flashcards

1
Q
  1. The retina of the eye convert the visual image how
A

The retina converts light that enters into your eye into electrical signals your optic nerve sends to your brain which creates the images you see.
The retina is the layer at the very back of your eyeball.

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2
Q
  1. What does the optic nerve do and how does it work
A

It’s an extension of your central nervous system, which includes your brain and spine. The optic nerve transmits electrical impulses from your eyes to your brain. Your brain processes this sensory information so that you can see

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3
Q
  1. How does the retina and cones work together in the eye
A

Cones are a type of photoreceptor cell in the retina. They give us our color vision. Cones are concentrated in the center of our retina in an area called the macula and help us see fine details. The retina has approximately 120 million rods and 6 million cones.

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4
Q
  1. What is needed to stimulate the rods and cones in the eye
A

Light is needed

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5
Q
  1. Photopic vision is control by what
A

Cones

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6
Q
  1. Scotopic vision is controlled by what
A

Rods

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7
Q
  1. Rods work best in what environment
A

Very low levels of light

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8
Q
  1. What is threshold detection concerning the eye
A

the least intensity of light visible to the eye, in other words, the ability of the eye to adapt itself to darkness.
the minimum light energy that can be detected,

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9
Q
  1. What is the boundary effect concerning the eye
A

N/A

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10
Q
  1. What is the “Mach effect” concerning the eye
A

Shades of gray differences

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11
Q
  1. What term is used when too much light stimulates the eye
A

Veil glare

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12
Q
  1. What does” pattern recognition “concerning a diagnostic opinion when looking at radiologic images
A

image acquisition, image preprocessing, image feature extraction and classification. For image preprocessing, more attention is given to image cropping and image enhancement, which are two important steps in dealing with biometric images.

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13
Q
  1. What should a radiographer take into consideration when positioning a patient to get the correct image-hint, part positioning, CR, OID etc.
A

Minimize magnification
Anatomy perpendicular to IR,

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14
Q
  1. What is the radiographic image concerning dimensional
A

N/A

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15
Q
  1. Concerning radiographic image, what is missing concerning dimensions
A

N/A

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16
Q
  1. What is the minimum views required to produce a 3-D image
A

3 views

17
Q
  1. Light is measure by what measurement
A

Lambert

18
Q
  1. Concerning the eye, what area of the eye is related to image sharpness
A

The fovea

19
Q
  1. The radiologist study many different areas during their education, what are some of the areas that are intensely studied during their training
A

Anatomy
Physics

20
Q
  1. Anatomy of the eye
A

Eye exam (1 decks)

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