ABO Exam Questions & Answers
Change a bifocal Rx to a single vision Rx - ANSWER-Add the bifocal power to the sphere powers.
OD: -0.50
OS: -0.25-0.25x172
Add: +1.75
Turns into-
OD: +1.25
OS: +1.50-0.25x172
Anisometropia - ANSWER-There is a difference of 3 diopters between both eyes; wh...
ABO Exam Questions & Answers
Change a bifocal Rx to a single vision Rx - ANSWER-Add the bifocal power to the sphere powers.
OD: -0.50
OS: -0.25-0.25x172
Add: +1.75
Turns into-
OD: +1.25
OS: +1.50-0.25x172
Anisometropia - ANSWER-There is a difference of 3 diopters between both eyes; when the vision of the
eyes differs by a large margin.
Antimetropia - ANSWER-Refers to Rx's that differ in sign.
Ex. OD: +0.25
OS: -0.75
Simple Hyperopia - ANSWER-The Rx will be a + sphere
Simple Myopia - ANSWER-The Rx will be - sphere
Marcus Gunn - ANSWER-Tests to see if both pupils constrict when a light is shined in one eye. Tests for
abnormalties in pupillary reaction.
optotypes - ANSWER-letters on the Snellen Chart
Who is said to be the pioneer lens designer (1268) - ANSWER-Roger Bacon
,Who is generally credited with the invention of spectacles? - ANSWER-Salvino d'Armati of Florence, Italy
(1285)
When were minus or concave lenses invented? - ANSWER-16th century for correction of myopic eyes
(nearsightedness)
When were toric lenses invented and by whom? - ANSWER-19th century by Suscipi
Who is credited with making the first bifocals? - ANSWER-Benjamin Franklin (1784)
Who aroused the interest of physicians concerning the exam of the eye and prescribing spectale lenses?
- ANSWER-F.C. Donders (1800)
Ocularist - ANSWER-a paramedical technician who designs, fabricates, hand paints, and fits ocular
protheses for those who have lost one or both eyes
photophobia - ANSWER-fear of light
iritis - ANSWER-an inflammation of the iris.
contraocular - ANSWER-pertaining to the opposite eye
enophthalmos - ANSWER-recession of the eyeball into the orbit
heterotropia - ANSWER-eyes do not maintain parallelism, but take a permanent position of convergence
or divergence
uvetis - ANSWER-inflammation involving the uveal tract
hyphema - ANSWER-blood in the anterior chamber of the eye
, binocular - ANSWER-pertaining to both eyes, the use of both eyes simutaneously
anophthalmos - ANSWER-abscence of an eyeball (newborn)
aspheric - ANSWER-a curve of multiple radii
achromat - ANSWER-a totally color blind individual, a lens free from chromatic abberation
hemophthalmia - ANSWER-blood (hemmorrhage) within the eye
aniridia - ANSWER-complete or partial absence of the iris
endophthalmitis - ANSWER-inflammation of the tissues of the internal structures of the eye
ansiotropia - ANSWER-unequal turning of the eyes
diplopia - ANSWER-double vision
exophthalmos - ANSWER-abnormal protrusion of the eyeball outward and forward
hemianopsia - ANSWER-blindness in half the visual field of one or both eyes
opthalmoscope - ANSWER-an instrument for viewing the fundus and interior of the eye
supraduction - ANSWER-an upward rotation of the eye
retinoscope - ANSWER-an instrument for viewing or shinning light on the retina to determine the
refractive state of the eye
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