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ODP Contact Lens Pre-Final Assessment 1 Exam Questions and Answers

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ODP Contact Lens Pre-Final Assessment 1 Exam Questions and Answers

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  • August 24, 2024
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  • Exam (elaborations)
  • Questions & answers
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millyphilip
ODP: Contact Lens Pre-Final
Assessment 1 Exam Questions and
Answers
What staining pattern will have a large break or area of erosion? - Answer -Abrasion

What is the index of refraction of the cornea? - Answer -1.376

What is the typical optical zone diameter of a corneal alignment fit? - Answer -8.0 mm

What are the layers of the corneal from inside out? - Answer -Endothelium, Descemet's
membrane, Stroma, Bowman's Layer, Epithelium

Who Will Likely need corrective lenses at a younger age? - Answer -A myope

Where can the chemical make-up of a hydrogel lens be found? - Answer -Package
insert

How long should a soft lens be allowed to settle on the eye before evaluation the fit? -
Answer -At lest 20 minutes

Scleral lenses should be inserted: - Answer -Directly on the cornea

What type of astigmatism may be revealed when a rigid contact lens is applied? -
Answer -Lenticular

At what power do you make adjustments for vertex distance? - Answer -+ or - 4.00

How can a flat cornea, even down to 31.00 diopters, be measured? - Answer -With the
use of a -1.00 trial lens

What instrument is used to determine the power of a rigid contact? - Answer -
Lensometer

What is the primary funtion of the digital corneal topographer? - Answer -Measure the
curvature of the cornea

, A special lens with a soft holder lens and a rigid center used to treat keratoconus is
called: - Answer -The piggyback

What is a reason to choose a higher DK fluorocarbon material over soft hydrogel? -
Answer -They are durable and require less requent replacement

F.E. Muller provided a lens or "glass shell" to Dr. Theodor Samisch to treat what
condition? - Answer -Loss of the upper lid

The first company to market soft contacts is the US: - Answer -Bausch and Lomb

What are the layers of the tear film from outside in? - Answer -Lipid, Aqueous, Mucin

What is the index of refraction of glass if light travels through the glass at a speed of
133,000 mi/sec: - Answer -1.398

Before 1930 what material was used for contact lenses? - Answer -Glass

What is the process of removing plastic from the bottom of a contact to produce a flat
edge to control rotation is called: - Answer -Truncation

What should lens edge thickness for rigid gas permeable lenses be? - Answer -0.8 -
0.12

What is a collection of white blood cells that occur subepithelial? - Answer -Infiltrates

Silicone is a key ingredient in this lens: - Answer -SA

There are ______________ extrinsic muscles attached to each eye? - Answer -6

The keratometer is calibrated to what index of refraction? - Answer -1.3375

Leonardo DeVinci's concept of neutralizing the cornea with a contract like divide
included: - Answer -The use of water

When a patient presents with a spectacle Rx of -10.00, what power of contact lens
would likely be ordered? - Answer --9.00

Which is an example of against-the-rule astigmatism? - Answer -44.00@180/43.00@90

What is the most common removal method for a soft contact lens? - Answer -Pinch

When compared to a normal image size, an aphakic person will view the same image
as ____________ larger through contacts. - Answer -7%

What abnormal growth can invade the cornea? - Answer -Pterygium

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