Spectacle Practice Test 3 (100 Questions)

How is anisometropia recognized in a prescription?

How many extrinsic muscles work to position the eyeballs?

If you were to put an Rx of -3.00 -2.00 x 90 on an optical cross, what powers would you see?

Who adopted the use of glass discs for the eyes?

Define what is a low vision aid:

Transpose -2.00 +3.00 x 80 into minus cylinder.

What is a major problem caused by aniridia?

Determine the image jump for the following Rx in a FT28
-4.00 -1.00 x 90
-5.00 -2.00 x 180
Add +2.00

Tilting a lens bottom toward the patient’s face is called:

What instrument do opticians commonly use to measure vertex distance?

What was founded in 1922?

Convert the Rx +2.00 -1.50 x 65 Add +2.50 to a reading Rx.

What material is best to be used in safety eyewear?

Where is the proper location to measure seg height for a segmented tri-focal?

A -6.00 lens is decentered 3 mm out. How much prism is produced?

What is a blanket term to indicate refractive error?

An ocular disease characterized by increased ocular pressure is known as?

In order to view objects in shape detail or to perceive color, the patient must:

How do you complete the adjustment of adding pantoscopic tilt?

What early type of eyewear were used by indigenous people?

What holds the crystalline lens in place?

This formula will give what result?
n = speed of light in air
speed of light in material

How much prism is produced when a lens with a Rx +3.00 -3.00 x 180 is decentered 7 mm in?

Which of these is a frame part?

Determine the MBS with the frame measurements of 57/18 with an ED of 61. The patient’s PD is 33/32.5 and is a single vision wearer.

Which fitting techniques would be more beneficial to an aphakic patient wearing strong cataract lenses?

Convert the following Rx to a computer Rx: -2.00 +3.00 x 180 Add +2.00.

The corneal epithelium is:

What is a lensometer used to measure?

Where does vision occur?

Which measurement system is used in optical science?

Tear fluid is:

What is the total power seen thru the bifocal segment of a lens with the Rx of +2.00 with an Add of +2.50?

What increased with the invention of the Gutenberg Press?

The eyelashes are ultra sensitive to touch and:

A plus lens is used to correct:

What is the index of refraction for crown grass?

What adjustment will help relieve tension on a patient’s ears?

How many inches is approximately 1 meter?

What should a glass blower be concerned with?

Looking 2 mm above the optical center of a lens that reads -2.00 -2.00 x 90 will give you how much prismatic effect?

Calculate the vertical imbalance for the following rx:
OD: -1.50 -1.00 x 90
OS: -4.00 -1.00 x 90
Add 3.00
At the reading level of 10mm

The eyelid consists of many laters. Which of the following is not a layer of the eyelid?

What is a growth that starts on the sclera and grows toward the cornea?

A lens was ordered with a power -12.00 -1.50 x 130 but comes in reading -11.875 -1.50 x 128. Is the lens within tolerance?

Which frame does poorly in an ultrasonic unit?

What is the specific gravity for polycarbonate?

Conventional slab-off is applied to which lens?

How is binocular PPD measured?

The liner in the rim part of a metal nylon cord frame is called:

How much pantoscopic tilt should be applied to most frames for good cosmetics?

What is likely to occur when the optician is able to discover and fulfill multiple visual needs?

Who needs eyewear?

What is true about lifestyle selling?

What is known as the “white” of the eye?

Which statement is true?

A HIPAA violation can be:

The add power of a multifocal lens of +2.50 can vary by how much?

Who was the first to determine the normal visual field?

When was the American Society for Testing Materials established?

A benefit of an all-in-one machine is:

A frame measures A=50, B=45, ED = 50, PPD = 61, Seg Height = 21. For this lens, how far below the datum line is the seg drop?

A double D lens should have a minimum of how many usable mm at the top?

Which multifocal has the least amount of image jump?

What is the outermost layer of the eyeball?

Which wavelengths most pleasing to the eye?

A black surface will:

Temple tips are:

A farsighted patient wears her glasses at the tip of her nose will result in:

How strong can glare be?

The power of the add is:

What is a key difference between an optometrist and an ophthalmologist?

If a lens has a +4.00 front curve and -6.00 back curve, what is the power of the lens?

What is a series of prisms stacked upon one another?

Which profession will benefit the most from wearing polarized lenses?

How dark is a tint that is categorized 4?

What can the CRP measure?

Can polarized lenses be colored?

Which tint helps to enhance target practice:

How is the round face described?

The junction between the upper and lower eyelids is called:

What is the approximate thickness of the eyelid when measuring vertex distance?

What is wavelength?

How is a monocular PD usually recorded?

A condition where there is a definite turning in is called:

Which of these conditions is associated with exposure to UV?

Photochromic lenses contain an ingredient that darkens when exposed to:

Receptors in the retina respond to:

A progressive sphere meridian power can vary by ± 0.16 D if it falls within this range:

What is considered an extremely dangerous form of UV?

How can a frame be measured?

What is true of a nylon mounted, semi-rimless design?

The Ultex bifocal had:

How will excessive base up prism affect a patient?

A patient walks in upset about their glasses. How do you handle the patient?

Which index of refraction is not considered high index material?

A 2 prism diopter lens held 6 meters away will cause how much of a shift?

If a lens has a front curve of +4.00 and a back power of -2.00 what is the total power of the lens?

If you look below the optical center of a plus lens, what prism will be produced?

If a Patient has a PD of 68 wearing a 53/15 frame how much decentration will be needed?