OSC Ophthalmic Scribe Exam-
Questions And Correct Answers
Aberration - Ans--the failure of a refraction surface or lens to produce an
exact point-to-point correspondence between an object and its image
Accommodation - Ans--adjustment by the eye for seeing at different
distances, accomplished by changing the shape of the crystalline lens
through action of the ciliary muscle
Albinism - Ans--a hereditary absence of pigment in the skin, hair, iris, and
retina; usually associated with a loss of visual acuity, nystagmus and
photophobia; often accompanied by refractive errors
amblyopia - Ans--decreased visual acuity without any apparent disease of
the eye
ametropia - Ans--any optical error in the eye that can be corrected by
glasses or contact lens
anterior chamber - Ans--the aqueous-filled space in the forward portion of
the eye, bounded in front by the cornea and behind the iris
aphakia - Ans--absence of the crystalline lens of the eye
aqueous - Ans--clear, watery fluid which fills the anterior chamber of the eye
aspheric lens - Ans--a non-spherical lens, n which the radii of curvature
increase towards the periphery rather than remaining equal at all points.
aspheric lenses reduce optical aberration and improve resolution
asthenopia - Ans--ocular fatigue caused by tiring of the muscles in or
around the eye
, astigmatism - Ans--a refractive error in which light rays fail to come to a
single focus on the retina because of differing amounts of refraction in the
various meridians of the eye
bifocal - Ans--lens with two optical zones, one for near vision and one for
distance vision
binocular vision - Ans--the ability to use both eyes simultaneously to focus
on the same object and to fuse the images from both eyes into a single
image
biomicroscope - Ans--see slit lamp
blindness (legal definition) - Ans--having central visual acuity of 20/200 of
less in the better eye after correction or having visual acuity of better than
20/200 but having a visual field of no greater than 20 degrees
canthus - Ans--the angle formed by the meeting of the upper and lower
eyelids; specified as outer or temporal, and inner or nasal
cataract - Ans--a clouding of the crystalline lens of the eye or its capsule, or
both, with consequent loss of visual acuity
chalazion - Ans--inflammatory enlargement of a meibomian gland in the
eye
choriorentintis - Ans--inflammation of the choroid and retina
choroid - Ans--the vascular, intermediate layer of the eye which furnishes
nourishment to the other parts of the eye
choroiditis - Ans--inflammation of the choriod
ciliary body - Ans--a portion of the vascular layer between the iris and the
choroid which consists of ciliary processes and ciliary muscle
color deficiency - Ans--diminished ability to perceive differences in colors -
usually for red or green rarely for blue or yellow
Questions And Correct Answers
Aberration - Ans--the failure of a refraction surface or lens to produce an
exact point-to-point correspondence between an object and its image
Accommodation - Ans--adjustment by the eye for seeing at different
distances, accomplished by changing the shape of the crystalline lens
through action of the ciliary muscle
Albinism - Ans--a hereditary absence of pigment in the skin, hair, iris, and
retina; usually associated with a loss of visual acuity, nystagmus and
photophobia; often accompanied by refractive errors
amblyopia - Ans--decreased visual acuity without any apparent disease of
the eye
ametropia - Ans--any optical error in the eye that can be corrected by
glasses or contact lens
anterior chamber - Ans--the aqueous-filled space in the forward portion of
the eye, bounded in front by the cornea and behind the iris
aphakia - Ans--absence of the crystalline lens of the eye
aqueous - Ans--clear, watery fluid which fills the anterior chamber of the eye
aspheric lens - Ans--a non-spherical lens, n which the radii of curvature
increase towards the periphery rather than remaining equal at all points.
aspheric lenses reduce optical aberration and improve resolution
asthenopia - Ans--ocular fatigue caused by tiring of the muscles in or
around the eye
, astigmatism - Ans--a refractive error in which light rays fail to come to a
single focus on the retina because of differing amounts of refraction in the
various meridians of the eye
bifocal - Ans--lens with two optical zones, one for near vision and one for
distance vision
binocular vision - Ans--the ability to use both eyes simultaneously to focus
on the same object and to fuse the images from both eyes into a single
image
biomicroscope - Ans--see slit lamp
blindness (legal definition) - Ans--having central visual acuity of 20/200 of
less in the better eye after correction or having visual acuity of better than
20/200 but having a visual field of no greater than 20 degrees
canthus - Ans--the angle formed by the meeting of the upper and lower
eyelids; specified as outer or temporal, and inner or nasal
cataract - Ans--a clouding of the crystalline lens of the eye or its capsule, or
both, with consequent loss of visual acuity
chalazion - Ans--inflammatory enlargement of a meibomian gland in the
eye
choriorentintis - Ans--inflammation of the choroid and retina
choroid - Ans--the vascular, intermediate layer of the eye which furnishes
nourishment to the other parts of the eye
choroiditis - Ans--inflammation of the choriod
ciliary body - Ans--a portion of the vascular layer between the iris and the
choroid which consists of ciliary processes and ciliary muscle
color deficiency - Ans--diminished ability to perceive differences in colors -
usually for red or green rarely for blue or yellow
