Optigal’s Q & A for the CLRE: Contact Lens Registry Exam Questions Basic Certification - NCLE

By Carrie Wilson

A compliment to Optigal's Introduction to Contact Lens Fitting, this book contains 400 questions to help you pass the exam. Written in the same format as the exam itself, the question and answer guide will help you be confident and comfortable come test day.

• Language: English
• Publisher: Lulu.com
• Release date: Mar 13, 2022
• ISBN: 9781387280100

Book preview

Optigal’s Q & A for the CLRE

Contact Lens Registry Exam Questions

Basic Certification - NCLE

By

Carrie Wilson

ABOM, NCLEM, LDO, MA

Copyright © 2023 Carrie Wilson

All rights reserved.

All rights reserved. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author, except in the case of brief quotations embodied in critical reviews and certain noncommercial uses permitted by copyright law.

Dispensing (20%) – 80 questions

Wear

Care

Handling

A(n) ________________ stain is a staining pattern that is indicative of poor lens insertion or recentering techniques.

3 and 9 o'clock

Arcuate

Orange peel

Stippling

Prolonged use of digital devices at near may lead to lens discomfort due to:

Excessive accommodation.

Decreased blinking.

Inadequate accommodation.

Lens temperature fluctuations.

When discussing lens equilibration, the contact lens fitter is discussing that the lens must:

Become hydrated.

Remain centered on the cornea.

Reach the same temperature as the tear film.

Align with the limbal curvature.

A buffering agent is used to control __________ levels.

Microbe

Tear Ph

Lipid

Aqueous

If a soft contact adheres to the cornea, the patient should:

Gently loosen the lens with their finger and then remove using the pinch method.

Utilize a suction cup specifically designed to remove the lens from the eye.

Irrigate the eye with warm water until the lens becomes loose.

Irrigate the eye with ophthalmic solutions until the lens becomes loose.

A patient needs to utilize ________________ if they wish to be the most effective in the removal of deposits.

Multi-purpose solutions

Thimerosal

Hydrogen peroxide systems

Heat systems

The primary purpose of a wetting solution developed for gas-permeable lenses is to:

Prevent dehydration.

Disinfect lenses on the go.

Remove lens deposits from the lens surface.

Create a hydrophilic lens surface.

The _______________ is a method of determining whether or not a lens is inverted prior to insertion.

Burrito test

Scissor method

Roll method

Edge flare

The __________ date is the last date that the product is still effective before it is opened.

Use by

Discard

Expiration

Handle

An allergy sufferer taking is taking a decongestant; ______________ is a side effect of this medication.

Increased tear production

Edema

Tinting the contact lens pink

Corneal dehydration

When using a multipurpose solution, the wearer should rub the lens for at least:

5 seconds.

20 seconds.

45 seconds.

60 seconds.

If the length of time for soaking a lens is not given by the manufacturer, contacts should be soaked for a minimum of ___________ hours.

4

6

8

12

The primary purpose of a surfactant cleaner is to:

Remove deposits.

Provide a hydrophilic surface.

Remove loose debris from the lens surface.

Provide antimicrobial properties.

A ________________ based system is the most likely to shorten the lifespan of a soft contact lens.

Heat

Thimerosal

Hydrogen Peroxide

Multi-purpose

When delivering lenses to a patient, the contact lens fitter should provide a(n) _________________ wearing schedule.

Approximate

Verbal

Written

Verbal and written

A(n) ____________________ is the most effective way to rinse cleaning residue from a gas-permeable lens surface.

Saline

Hydrogen peroxide solution

Enzymatic cleaner

Rewetting drops

The condition known as _________________ occurs when the patient experiences blurry vision while wearing eyeglasses after the removal of contact lenses.

Edema

Spectacle blur

Corneal haze

Arcus Senilis

A common preservative found in gas-permeable solutions, called __________ can cause serious problems for users of soft contact lenses.

Fluorosoft

Hydrogen Peroxide

Benzalkonium Chloride

Sodium Borate

Patients should clean lenses with a surfactant cleaner:

Weekly.

Before insertion.

After removal.

Bi-weekly.

Changing the  ________________ would result in increased lens movement.

Central posterior curve to be steeper

Peripheral curves to be wider

Diameter to a larger size

Peripheral Optical Zone to a larger area

The largest drawback of contact lens materials containing silicone is:

Durability.

Optical clarity.

Oxygen transmission.

Wettability.

Which of the following contact lens materials are most likely to need a weekly enzymer?

Gas-permeable lens

Monthly replacement

Daily wear

Bi-weekly, colored contacts

____________ is a mercury-based preservative.

Polysorbate-80

BAK

Thimerosal

Polyquad

Mucin balls are more commonly seen with ___________ contact lenses.

Gas-permeable

Daily disposable

FDA Class I

Silicone hydrogel extended-wear

Which of the following preservatives are least likely to cause a negative impact on the corneal surface?

Polysorbate 80

Sorbic acid

Hydrogen Peroxide 10%

BAK

If an established contact lens wearer complains of sudden onset pain one afternoon, the cause is most likely:

A hydrogen peroxide solution reaction.

Expired rewetting drops.

A damaged lens.

Lysozyme deficiency.

According to the FDA, extended-wear contacts are good for overnight or continuous wear ranging from one to six nights, or up to _________days.

7

14

21

30

SICS is known as:

Solution Induced Corneal Staining.

Subjective Integral Corneal Staining.

Superior Integrated Cornuate Seal.

Superiorly Induced Corneal Seal.

Proper makeup use for contact lenses includes:

Applying before inserting contact lenses.

Replacing eye makeup approximately every three months.

Applying to the inner lid margin.

Minimizing how often lashes are cleaned using a contact lens approved cleanser.

A contact lens patient wakes up after accidentally falling asleep in his contacts and realizes that the soft contact is not moving on his eye. To remove the contact, he should:

Use the lid to gently dislodge it.

Pinch gently with thumb and forefinger.

Irrigate with a multipurpose solution until the contact loosens from the corneal surface.

Pop the contact from the eye using the blink method.

The main disadvantage of a soft contact lens is:

A long adaptation period.

Low oxygen permeability.

Protein deposit build-up.

A tendency toward a steep fit.

An enzymer is used to __________ a lens.

Disinfect

Clean

Remove build-up from

Wet

If 3% hydrogen peroxide makes contact with the eye, the result is:

Chemical burns.

Mild stinging.

Punctate staining.

Mild tearing.

For a preservative to be considered effective, it must:

Kill all organisms within a 4-hour soak period.

Keep microorganisms from multiplying within the solution.

Meet the efficacy requirements for killing bacterial, viral, and fungal organisms.

Be heat or peroxide-based.

If a contact lens wearer lives in a dry area or at a high altitude, then they are more likely to experience:

UVC exposure.

GPC.

PVC.

A burning and gritty sensation.

An extended-wear lens wearer must remove their contact lens at least once every ______ nights.

5

7

15

30

The process of contact lens disinfection:

Reduces the level of microbial contamination on the lens.

Kills all microorganisms.

Changes the surface from hydrophilic to hydrophobic.

Changes the surface from hydrophobic to hydrophilic.

Which preservative is least likely to cause discolored lenses in certain concentrations?

Sorbic acid

Thimerosal

Potassium sorbate

Trimethoprim

Incorrect gas-permeable recentering techniques can create ____________ staining.

Arcuate

Stippling

Punctate

Microcyst

If a patient experiences poor vision after removing their gas-permeable lenses and putting on their eyeglasses, this is called:

Adaptation.

Fogging.

Spectacle blur.

Edemal blur.

A contact lens wearer complains of burning, stinging, and redness. The fitter looks at her file and sees that the wearer is using a hydrogen peroxide system. What is the most likely cause of the symptoms?

Allergic reaction

Changed the solution type

Did not soak for a least 6 hours

Used saline to rinse off the lens

__________________ is an adequate disinfectant for contact lens wear.

Cleaner

Multipurpose solution

Enzymer

Wetting

A contact lens wearer should not expose their contacts to ____________ while wearing them.

Water

Direct sunlight

OTC eyedrops

Saline

When not properly neutralized, hydrogen peroxide solutions can cause:

SICS.

SEAL.

Epithelial damage.

Endothelium damage.

The practice of _____________ old solution left in the lens case reduces effective lens disinfection and could lead to severe infection, vision loss, or blindness.

Topping – off

Changing out

Popping – in

Reducing

The _______________ date refers to the time that the patient can safely use contact lens care product after the bottle has been opened.

Use by

Discard

Expiration

Handle

After cleaning a contact lens case, the case should be rinsed with fresh:

Saline.

Water.

Cushioning liquid.

Disinfecting solution.

When utilizing hydrogen peroxide solution, the wearer must:

Rinse off the contact with the solution before inserting the lens in the eye.

Use a contact lens flat pack to store the contact lens overnight.

Use the contact lens case that comes with the solution.

Rinse off the contact with ionized water before inserting the lens in the eye.

How often should the contact lens wearer replace the contact lens case?

Quarterly

Every 6 months

As it gets dirty

Every time a new bottle of solution is purchased

A ____________ contact lens will center itself with the blink upon insertion.

Translating

Segmented

Soft toric

Gas-permeable toric

Which of the following is a method of removal for a soft contact lens?

Blink

Roll

Scissor

Suction cup

If a lens has a high-water content, it will fit ________ as it dehydrates.

The same

Tighter

Looser

With greater edge lift

The two-hand method for removing gas-permeable contacts is also called the _______ method.

Blink

Roll

Scissor

Suction cup

Inferior arcuate lesion staining is caused by:

Air bubbles.

Insufficient tear film.

Protein deposits.

Ocular debris.

A(n) _____________________ is an advantage of wearing contact lenses for a high myope.

Restricted field of view

Increased ability to accommodate.

Unrestricted field of view

Increased lenticular minification

_______________ is a disadvantage of a hydrophilic contact lens.

Corneal reshaping

Poor adaptation

Deposit formation

Spectacle blur

A gas-permeable wearer complains of blurred vision at near. Which of the following is the most likely cause?

The patient is over-plussed.

The patient needs a scleral lens.

The lens rides high.

The lens has an oily deposit.

A social media influencer complains of intermittent blur between blinks when working on his account. The most likely cause is that he is:

Over-plussed.

Over-minused.

Suffering from residual astigmatism.

Suffering from lens dehydration from fixation.

A method for removing soft contacts is the:

Blink method.

Pinch method.

Underhanded method.

Overhanded method.

An extended-wear contact lens patient needs to remove their lenses overnight so that they can be cleaned and disinfected at least:

Weekly.

Bi-weekly.

Monthly.

Quarterly.

_________________ is a symptom of a loose-fitting lens.

Burning

Stinging

Lid sensation

Cloudy vision

When wearing a soft spherical contact lens with mild corneal astigmatism, a ________________lens will mask astigmatism more efficiently.

Larger

Thinner

Smaller

Thicker

A minus lenticular lens has the benefit of:

A reduced diameter.

Lighter weight.

Easier cleaning.