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Ophthalmic Assistant > Astigmastism > Flashcards

Astigmastism Flashcards

1
Q

Define Regular Astigmatism

A

Has two primary focal points rather than just one

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2
Q

How to corrects Astigmatism

A

With a cylindrical (toric) lens

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3
Q

What is Simple Astigmatism

A

Has one focal point, and the other is either in front or behind the retina

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4
Q

How do you convert simple, compound, or unequally mixed astigmatism into a case of equally mixed astigmatism

A

The spherical equivalent calculation

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5
Q

What is Simple astigmatism - Myopic

A

Has a second focal point in Front of the retina

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6
Q

What is simple astigmatism- Hyperopia

A

Has a second focal point Behind the retina

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7
Q

What is compound astigmatism

A

Both focal points are on the same side as the retina (front or behind)

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8
Q

What is compound Myopic astigmatism

A

Has both focal points in front of the retina

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9
Q

What is compound Hyperopia astigmatism

A

Has the focal points behind the retina

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10
Q

What is mixed astigmatism

A

One focal point in front of the retina and one behind the retina

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Ophthalmic Assistant (66 decks)

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