quizes Flashcards
What job will you do if you work in optical dispensing?
You’ll fill eyeglass and contact lens prescriptions.
Which of these statements is accurate?
Opticians can work as pediatric vision therapists.
What’s one important skill for you to have as an optician?
The ability to use small tools to make eyeglass repairs and adjustments.
Which of these is an accurate statement about certification?
In many states in the United States, you must be certified to work as an optician.
How long is ABO certification valid?
Three years.
Which eye muscle or muscles do you use when you look toward your right ear?
The right lateral rectus and left medial rectus.
Which part of the eye contains the cells that determine eye color?
The iris.
What is the vitreous or vitreous humor?
The gelatinous substance behind the iris that helps keep the eyeball round.
Which direction does the eye turn if you move the inferior oblique extraocular muscle?
Up and out.
What is a blind spot?
An area where the optic nerve obstructs vision.
If Ted is hyperopic, how would you describe his eye?
The eyeball is short.
If Teresa has a perfectly spherical eye and cornea, what word would you use to describe her vision?
Emmetropia.
What causes presbyopia?
Hardening of the lens with age.
What causes refractive errors?
Defects in the curved structures that focus light.
Which of these problems do doctors sometimes treat with an eye patch?
Amblyopia.
What is one cause of strabismus?
Hyperthyroidism.
Which of these is a useful corrective treatment for strabismus?
Surgery.
Which of these is an accurate statement about vision therapy?
prisms are often used in vision therapy
What occurs in exotropia?
One or both eyes turn outward.
Which type of lenses are you likely to use for treatment purposes in vision therapy?
Prism lenses.
which of these conditions will affect the type of glasses lenses you select for a person?
Mature cataracts.
Which of these is an accurate statement about glaucoma?
It’s caused by degeneration of the optic nerve.
Which of these can increase a person’s risk of developing cataracts?
Smoking.
Which of these are two types of macular degeneration
Wet and dry.
Which of these is a cause of diabetic retinopathy?
Poorly controlled blood sugar.
What’s one advantage of using zyl in a frame?
It’s inexpensive.
What frame material are many people allergic to?
Nickel.
What is the eyesize of a frame?
The longest horizontal length from one end of a rim to the other end of the same rim.
Which of these is an accurate statement about measuring pupillary distance?
You can use a pupillometer to take this measurement.
Which measurement ensures that the optical center of the lens will be in front of the pupil when the person looks straight ahead?
The pupillary distance.
Marsha is a high hyperope, and she has an elongated oval face. Which of these is a good option for her?
Full frame, rectangular in shape.
Which of these styles can make a short nose look longer?
A keyhole bridge.
Which of these is an accurate statement about sports lenses?
Some sports frames have removal nose bridges made of rubber.
Which of these will look best on a person with a diamond-shaped face?
Heavy upper frame rims.
Which of these styles works best for a person with myopia and a high prescription?
Small, rounded frames.
What will you use a lens caliper for?
Measuring the thickness of a lens.
Which of these is an accurate statement?
A longer vertex will make the effective power of a lens more plus.
If a four-point touch shows that the left lens of a frame is higher than the right lens, what should you do?
Bend the left temple up.
When should you first inspect the alignment of a frame?
Before trying it on a client and making final adjustments.
Which of these is a good idea when you’re warming a frame so you can align it?
Know what temperature the frame and lens materials can withstand.
Which of these is a correct rule for adjusting an eyeglass temple that is too high on the right side?
Up-Up.
Which of these is an accurate statement about fitting a frame?
If you begin by creating a four point touch, you will not need to make many more adjustments after that.
What should you do if a client’s frame sits too close to his or her face?
Rebend the earpieces so the bend is further out from the hinge.
What is the best way to adjust the nosepads if the frame is too close to a child’s eyes and the child has a very flat bridge?
Pull the pads slightly away from the frame front, bring them closer to each other, and flatten their angle.
How will you adjust a frame if the glasses are irritating the right mastoid process?
Rebend the temples.
Using a lens clock, you discover that the front surface of a lens reads +2.00. The back surface reads +1.50. What is the power of the lens?
+3.50.
What is the focal length of a +4.00 diopter lens?
.25 meters.
Which of these is an accurate statement about ultraviolet radiation?
Ultraviolet waves are shorter than the visible spectrum.
How does light bend when it enters at an angle from a rarer medium to a denser medium?
It bends toward the normal.
What is another name for a plus lens?
A convex lens.
Take a look at the following prescription:
O.D. +2.00 + 1.75 x 035
O.S. +0.25 + 2.00 x 045
O.D. +3.75 -1.75 x 125; O.S. +2.25 – 2.00 x 135
Look at this prescription:
O.D. -0.75 -2.25 x 175
O.S. +2.25 + 0.25 x 180
O.D. -3.00 +2.25 x 085; O.S. +2.50 -0.25 x 090
What does the first set of numbers in a prescription tell you?
The sphere number.
What is the description of compound myopic astigmatism?
The eye is nearsighted in both meridians, but it is more nearsighted in one meridian than the other.
Jordan wears bifocals. His right-eye prescription is -2.25 -1.00 X 85 with an add of +25. What is the total power of this lens in the add portion?
-2.00
Which of these multifocal styles has a bifocal line going all the way across the lens?
An executive bifocal.
What is one disadvantage of progressive lenses?
They impair peripheral vision to some degree.
How do we categorize flat-top bifocal lenses?
By their width as measured across the top.
What is the term used to designate the distance from the top of the full lens in a bifocal to the top of the segment?
The seg drop.
What piece of information will you need to know to calculate the effective power of a pair of progressive lenses?
The vertex.
