Questions and Answers
A-SCAN biometry measurements are essential before what type of surgery? -
answer-Cataract
A-SCAN biometry is used to measure the? - answer-Axial length of the eye
A-SCAN biometry and keratometry readings are used to determine? - answer-The
power needed for an intraocular lens
What organization certifies ophthalmic medical personnel? - answer-JCAHPO
Successful completion of an independent study course, as well as supervised on-
the-job training allows ophthalmic medical personnel to seek entry-level certification
as a ______? - answer-COA
The primary role of skilled ophthalmic medical personnel in a practice is? - answer-
Evaluation and collection of data
Which eyecare personnel specialized in fitting spectacles? - answer-Optician
which eyecare personnel specialized with eye movement and the extraocular
muscles? - answer-Orthoptist
What test illuminates the screen with a filter that is red on one side and green on the
other? - answer-Duochrome
The distance from the cornea to the back surface of the spectacle lens is the? -
answer-Vertex distance
A patient's prescription is -2.50 +1.00 X 175. What is the minus cylinder
transpisition? - answer--1.50 -1.00 X 85
The spherical equivalent of +2.00 +5.00 X 180 is? - answer-+4.50
A lens with a focal length of 2 meters has a power of? - answer-0.5 D
What part of the spectacles connects the two lenses? - answer-Bridge
The measurement used to determine the distance between the optical centers of
spectacle lenses is the? - answer-Pupillary distance
The optical centers of spectacle lenses must be properly aligned in order to avoid
this effect? - answer-Prismatic
, Which eye drop paralyzes accommodation and thereby allows all of the hyperopia to
be uncovered? - answer-Cycloplegic
Retinoscopy is an example of what type of refractometry - answer-Objective
Bending of light is called? - answer-Refraction
The area between the two focal points of a spherocylindrical lens is called the conoid
of? - answer-Sturm
The condition in which the eye does not refract light equally in all directions is? -
answer-Astigmatism
In retinoscopy a "with" reflex is most commonly observed in which refractive error? -
answer-Hyperopia (Farsightedness)
A major cause of patient dissatisfaction is? - answer-waiting times
If a patient must be kept waiting, it is important to tell them why and also....? -
answer-how long the wait might be
Patient dissatisfaction due to waiting time increases dramatically after? - answer-30
minutes
In North America, a person is considered legally blind if the widest angle of central
vision is less than 20 degrees or has a? - answer-best corrected visual acuity of
20/200 or worse in their better eye
The world health organization defines blindness as a visual acuity of? - answer-
20/400
The best way to guide a partially sighted patient to an exam room is? - answer-
offering your arm
The international campaign to eliminate avoidable blindness is called? - answer-
Vision 2020
A disadvantage of chemical-based contact lens care systems is? - answer-irritation
Soft contact lenses are susceptible to deposits of? - answer-proteins
An important difference between soft and rigid contact lenses is that rigid lenses? -
answer-Must be closely fitted to the shape of the cornea
The permeability of a contact lens is denoted by which value? - answer-PMMA
Extended wear contact lenses are made of materials that allow greater permeability
of? - answer-Oxygen