Optigal's Q & A for the NOCE: National Opticianry Certification Exam Questions - Basic Certification

Optigal’s Q & A for the NOCE

National Opticianry Certification Exam Questions

Basic Certification - ABO

By

Carrie Wilson

ABOM, NCLEM, LDO, MBA

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.

Ophthalmic Optics (34%) – 170 questions

Terminology

Prescriptions

Lens characteristics

Lens powers and formulas

Multifocals

Lens materials

Prism

Lenses that are commonly referred to as plastic are made of a material called:

Zylonite.

Columbia Resin-39.

Hivex.

Polycarbonate.

The normal is an imaginary line that ________________ the lens surface.

Refracts through

Runs parallel to

Runs perpendicular to

Reflects off of

+3.00 -3.00 x 180 is an indication of a:

Simple myopic astigmatism.

Mixed astigmatism.

Compound hyperopic astigmatism.

Simple hyperopic astigmatism.

A patient that presents with a plano prescription is diagnosed with:

Astigmatism.

Hyperopia.

Emmetropia.

Antimetropia.

If a lens seems to be stronger when the glasses slide down the nose, then the lens is correcting for:

Hyperopia.

Myopia.

Amblyopia.

Presbyopia.

A lens that has a plus curve on the front and back surface is called:

Biconcave.

Bitoric.

Lenticular.

Biconvex.

If a lens exhibits a scissoring motion, then it is a ______________ lens.

Sphero-cylinder

Meniscus

Lenticular

Progressive

An optical cross represents the physical  __________ of a lens.

Waves

Curves

Gradients

Thickness

A lens that has a plus curve on the front surface and a minus curve on the back surface is called a _____________ lens.

Biconcave

Bitoric

Lenticular

Meniscus

Transposing is conducted to determine:

Thickness.

Near power.

Lens compensation.

Powers in the principal meridians.

Which lens would be the heaviest, all factors being the same?

Executive

Round 22

FT35

Ultex

When white light is broken down into its component colors, it is:

Aberrated.

Refracted.

Reflected.

Diffracted.

The velocity of light is the least in:

Water

Snow

Glass

Air

___________________ is the speed of light.

186,000 miles per hour

186,000 miles per second

186,000 millimeters per hour

186,000 millimeters per second

Compound lenses have:

Two different lens materials laminated together.

A segmented add-on a single vision lens carrier

A bifocal placed on the top or the bottom of the lens.

A spherical and cylinder component of the lens.

_____________________ is the aberration that is of most concern to the lens designer.

Spherical aberration

Abbe

Distortion

Coma

A slab-off is ground on the lens with the least amount plus of power in the _______________ meridian.

Primary

Horizontal

Vertical

Oblique

Light, when it reaches the surface of a lens, is:

Reflected.

Refracted.

Absorbed.

Reflected, Refracted, and Absorbed.

The measure of light from trough to trough is called a:

Nanometer.

Wavelength.

Spectrograph.

Vertometer.

The ray that passes through a lens without being deviated is known as the:

Normal.

Axial ray.

Divergent ray.

Incident ray.

A reverse slab-off has prism ground:

Base-up Most Minus.

Base-down Most Minus.

Base-up Most Plus.

Base-down Most Plus.

All lenses surfaced with toricity exhibits:

With-motion.

Scissoring.

Magnification.

Against-motion.

CR-39 has a nu-value of:

58.

30.

45.

68.

Bicentric grinding is also known as:

Surfacing.

Glazing.

Slab-off.

Edging.

A plus lens that has mistakenly been measured with an optical center too low exhibits __________ prism.

BI

BD

BO

BU

The optical center of a round seg is located:

4 mm from the top of the seg.

At the top of the seg.

At the geometric center.

10 mm from the top of the seg.

A lens designed to treat myopia exhibits _________________ motion.

Oblique

Scissoring

With

Against

A ray of light that passes through a lens, once it leaves a lens, is bent:

At a 90-degree angle.

At the angle of incidence.

Away from the normal.

Toward the normal.

If the angle of incidence is 45 degrees, then the angle of reflection is __________ degrees.

Plano

045

090

135

+4.00 -3.00 X 45 is an indication of _________________ astigmatism.

Compound myopic

Compound hyperopic

Mixed

Simple hyperopic

Utilizing the 360° prism method, a base-up prism is at:

090°.

180°.

270°.

360°.

The condition in which light focuses in front of the retina is:

Hyperopia.

Emmetropia.

Myopia.

Astigmatism.

The material with the lowest Abbe value is:

1.62

CR-39.

Hi-index glass.

Polycarbonate.

Emmetropia is the condition in which a patient:

Is nearsighted.

Is farsighted.

Has muscle weakness.

Has no corrective error.

The relationship between the front curve and the back curve will give the optician the:

Sagittal depth.

Refractive power.

Effective diameter.

Center Thickness.

A ptosis crutch is used to support the:

Upper lid.

Lower lid.

Bridge.

Nosepad.

____________ is the ingredient in glass photochromics that enable the lens to change.

Silver nitrate

Oxidated halide

Silver halide

Oxidated nitrate

The manufacturing of lenses occurs in _______________ cylinder form.

Plus

Oblique

Compound

Minus

The condition in which light focuses behind the retina is:

Hyperopia.

Emmetropia.

Myopia.

Astigmatism.

Rewrite the following prescription for a spherical equivalent power:

+1.00 -3.00 x 080

+1.00

-2.00

-3.00

-0.50

The condition in which light is split and one ray focuses in front of the retina and one ray focuses behind the retina is ____________ astigmatism.

Compound hyperopic

Compound myopic

Simple myopic

Mixed

The optical center of a lens is:

Where the A, ED, and B measurements intersect.

At the geometric center.

The point of the lens where there is no deviation from the optical axis.

At the datum line.

Adjust the following prescription for near vision only:

-1.00 -2.00 x 180

-1.50 -2.00 x 180

2.00 add

+2.00 -2.00 x 180

+2.00 -2.00 x 180

+1.00 -2.00 x 180

+0.50 -2.00 x 180

-2.00 -2.00 x 180

-2.50 -2.00 x 180

-1.00 -2.00 x 180

-0.50 -2.00 x 180

Light passing through a prism deviates toward the:

Base.

090 axis.

180 axis.

Apex.

The condition in which light is split and one ray focuses on the retina and one ray focuses behind the retina is:

Compound hyperopic astigmatism.

Simple hyperopic astigmatism.

Simple myopic astigmatism.

Mixed astigmatism.

With all parameters being equal, the lens material that would be the heaviest is:

PhotoGray.

CR-39.

Polycarbonate.

Trivex.

All of the following are characteristics of a plus lens EXCEPT:

Convergence

Magnified

Virtual image

Against-motion

A group of rays is called a:

Pencil.

Proton.

Beam.

Laser.

Tendency of the eye to turn is called:

Amblyopia.

Phoria.

Anisometropia.

Tropia.

The greatest source of blue light is:

Computers.

Handhelds.

The sun.

LED lights.

The intermediate power of a trifocal is typically _________ of the add power.

25%

33%

50%

66%

The condition in which light is split and one ray focuses on the retina and one ray focuses in front of the retina is ______________ astigmatism.

Compound hyperopic

Simple hyperopic

Simple myopic

Mixed

An object when viewed through a prism deviates toward the:

Base.

090 axis.

180 axis.

Apex.

All of the following are characteristics of a minus lens EXCEPT:

Divergent

Two prisms apex to apex

Virtual image

Against-motion

Which prismatic effect is the easiest for a patient to tolerate when looking at near?

Base-in

Base-out

Base-up

Base-down

Trifocals are usually prescribed when the patient is a(n) __________ presbyope.

Emergent

New

Intermediate

Advanced

A slab-off utilizes base ______ prism.

In

Out

Up

Down

The longest ray in the visible spectrum is the ____________ ray.

Red

Yellow

Blue

Violet

The part of the ultraviolet spectrum that is most likely to cause harm is:

UVA.

UVB.

UVC.

High Energy Violet (blue light).

The condition in which light is split and both rays come into focus behind the retina is:

Compound hyperopic astigmatism.

Simple hyperopic astigmatism.

Compound myopic astigmatism.

Mixed astigmatism.

A ray traveling from the air into the lens is bent:

Away from the normal.

Toward the normal.

Away from the axial ray.

Toward the axial ray.

Diffuse reflection is a reflection off of a(n) ________________ surface.

Anti-reflective coated

Polarized

Smooth

Rough

In a mirror, the ray that passes through the center of the mirror is the ________ ray.

Axial

Incident

Reflective

Parallel

Plane mirrors always create a(n)________________ image.

Inverted

Upright

Virtual

Real

_____________ is the index of refraction for Crown Glass.

1.42

1.49

1.52

1.58

The shortest ray in the visible spectrum is the ____________ ray.

Red

Yellow

Blue

Violet

A prism diopter diverges light ________ at a distance of __________.

1 mm, 1-meter

1 cm, 1-meter

1cm, 1 kilometer

1mm, 1 kilometer

The prescriber’s method for prism uses __________ to inform the optician and manufacturer of prism placement in the lens.

Base direction

Degree orientation

Deviation

Displacement

At the given axis of a cylinder, there is _________ percent of the cylinder in effect.

0

25

50

100

If a patient with an Rx of -1.25 -0.50 x 090 with a 2.50 add looks through the intermediate portion of the trifocal, they are looking through a power of:

+1.25 -0.50 x 090.

+1.25 sphere.

Plano sphere.

Pl -0.50 x 090.

___________ is an aberration that gets its name from the flare shape it gives an image.

Spherical

Coma

Pincushion Distortion

Barrel Distortion

_____________ is the