ABO advance study guide Questions And Answers Graded A+
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Course
ABO
Institution
ABO
Factors influencing darkening/lightening of photochromic lenses include _________. - ・ Intensity
of light
・ Temperature
・ Age of lens
______ is a federal agency who has adopted the ANSI z-87 standards for workplace and educational
settings. - OSHA
______ sign is defined as an abnormal f...
ABO advance study guide
Factors influencing darkening/lightening of photochromic lenses include _________. - ・Intensity
of light
・Temperature
・Age of lens
______ is a federal agency who has adopted the ANSI z-87 standards for workplace and educational
settings. - OSHA
______ sign is defined as an abnormal forward bulging of the lower eyelid border observed when a
patient looks downwards, caused by high curvature of the cornea as deformed by keratoconus. -
Munson's
_______ added to any color increases contrast. - Yellow
_______ are _____ cells that detect motion within a field. - Rods-Long
_______ is better than ______ for improving contrast? - Green-Gray
_______ is defined as a abnormal accumulation of watery fluid, presumably aqueous humor, in the
stroma and usually the epithelium of the normal clear cornea. - Corneal hydrops
_______ is the condition whereby the eye turn in opposite (different) directions. - Heterotropia
________ established protective standards, enforces those standards, and reaches out to employers and
employees through technical assistance and consultation programs. - OSHA
________ is a federal agency that oversees the production and approval of both food and drug products.
- The FDA
,________ is the condition in which both eyes have equal refractive power. - Insometropia
________ is vertical misalignment caused by a twisted bridge in which the top of one lens eye wire is
tilted out and the other is tilted in. - x-ing
_________ is an organization that develops standards covering sports related eyewear products. -
OSHA
_________ is defined as pigmentary degeneration of the retina. Symptoms start with _____ night vision
and later progress to a diminishing of _____ vision - Retinitis pigmentosa- decreased- peripheral
__________ are generally inorganic materials (metals or minerals) that are vacuum deposited to add
color on glass lenses to give a uniform density of color on the lenses. - Vacuum color coating
_____ may result in protrusion of one or both eyes, dry eye to cornea exposure, convergence
insufficiency, and/or hypertropia. - Grave's disease or hyperthyroidism
A _______ is a wing-like thickening of fibrovascular connective tissue and blood vessels beneath the
bulbar conjunctiva which slowly grows from the inner canthus over the limbus and into the superficial
cornea. - Pterygium
A _________ is used to measure vertex distance. - Disometer
A "farsighted" eye is one that is: - Hyperopic
A +4.00D lens decentered in 4mm creates:
PCMxD - 1.6 diopters in
A 3.00 prism will deviate a ray of light _______ at a distance of 5 meters. - 15cm
,A bifocal, for a first time wearer, should be fitted at which of the following reference points: -
Lower lid margin
A Characteristic of a dark tinted glass lens with an RX of +4.00 SPH would be _________. - Darker
in the center and lighter on the edge
A comprehensive eye exam is known as a refraction. TRUE or FALSE - False
A condition in which the refractive error of one eye significantly differs from that of the other and where
both eyes have the same sign (both eyes are myopic or hyperopic) is known as: - Anisometropia
A consumer complains that his old glasses give him better visual acuity than his new glasses (same RX).
what should the optician do? - Check the vertex distance and base curve
A critical rule when splitting prism is to: - maintain the same prescribed direction the same eye as
originally prescribed
A difference in pupil size is called - anisocoria
A disavantage of the Galilean telescope is that _______. - the field of view is smaller.
A disavantage of the keplerian telescope is that ______. - The image is inverted
A diverging lens produces a _______image. - virtual
A lens dispersing white light into its components colors is an example of which abberation. -
Chromatic Aberration
A lens which reads +3.00 -2.00 x090 is decentered in 6mm to much. How much horizontal prism is
created by this error?
, P-HCM x D - .6 Diopters base in. .6x1.00
A lensometer target indicates a lens has 2D of base up with a 5.00 prism D auxiliary prism positioned
base down. The total base up prism in the lens is __________ prism diopters - 7 Prism Diopters
A minus lens could be simplistically described as: - Two prism apex to apex
A new RX with a large increase in plus power will require the patient to converge ________ when
reading. - more
A non-verbal determination of refractive error is called a ___________. - Objective refraction
A ophthalmic professionals, and ethical conduct is understood and is not an issue that we need to
consider in our profession. TRUE or FALSE - False
A pair of eyewear is dispensed to the customer. The optical center placement is 2mm lower than
customer line of sight. In a plus power RX. What type of prism has been induced? - Base down
prism
A patient is prescribed a +12.00D sphere with a fitting distance of 13mm. When the finished eyewear is
dispensed, the wearing distance is 8mm. What will the customer experience? - That the lens feels
weaker
A patient is prescribed a +15.00D sphere with a fitting distance of 13mm. When the finished eyewear is
dispensed the wearing distance is 16mm. Determine the compensated lens power that will be supplied. -
+14.25D
A patient who has a best corrected central acuity of 20/200 is considered __________. - Legally
blind
A patient will experience photophobia and poor near vision after ______. - Cycloplegic refraction
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