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RCL Quiz

Authored by Emily Hedley

Biology

University

Used 2+ times

RCL Quiz
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one of the reasons for the decline in popularity of RCLs?

Worse visual quality

Too expensive

More ranges of SCL available

Higher risks of MK

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is created when the front surface of the cornea is neutralised using the posterior lens surface in an RCL?

A vacuum

A tear lens

A refractive index

A focal point

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of bi-curve, tri-curve, and multi-curve designs in lens design?

To decrease the weight of the lens

To increase the aesthetic appeal of the lens

To mimic corneal flattening by progressively increasing each radius of curvature

To reduce the cost of lens production

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Given a spectacle prescription of -2.00/-1.50 x 95, what would be the appropriate BVP to choose for a spherical RCL?

-2.00

-1.50

-3.50

-0.50

5.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

How much diopter change corresponds to each 0.05mm difference in K readings?

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of astigmatism must be present as a mismatch between spectacle astigmatism and corneal astigmatism?

Lenticular astigmatism

Corneal astigmatism

Refractive astigmatism

Myopic astigmatism

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should be subtracted from HVID to determine the Total Diameter (TD) for an initial RCL?

1mm

2mm

3mm

0.7mm

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