Comprehensive; ABO -American Board of Opticianry|
Exam Questions All With Complete Solutions /2024
Guide/Rated A+ /Guarantee Pass
Aberration - ANSWERDeviation from a single focus of light rays emanating from one
source
Accommodation - ANSWERThe ability of the eye to adjust focus for varying distances
Achromatic - ANSWERDescriptive of a lens capable of refracting light without
creating a rainbow effect
Acuity - ANSWERVisual expression of sharpness of vision (20\20 distance, J.1 near)
Addition - ANSWERDifference in plus power between the reading and distance
portions of a mulitfocal lens
Amblyopia - ANSWERLoss of vision without any apparent disease of the eye
Ametropia - ANSWERA refractive error in which the eye, when in a state of rest, does
not focus the image of an object upon the retina; includes hyperopia, myopia, and
astigmatism
Aniseikonia - ANSWERA condition in which the image of an object as seen by one eye
differs so much in size or shape from that seen by the other eye that the two images
cannot be fused into a single impression
Anisometropia - ANSWERA condition in which the refractive error of one eye
significantly differs from that of the other
Anterior chamber - ANSWERFront cavity or compartment of the eye, located
between the cornea and crystalline lens. Contains aqueous humor
Apex - ANSWERThinnest edge of a prism
Aphakia - ANSWERAbsence of the crystalline lens of the eye (pseudophakia; having a
false lens)
Aspheric - ANSWERNot spherical; a lens surface having a number of curves with
different radii
Astigmatism - ANSWERA defect of the eye, of a lens or of an image formed by either,
the curvature of the refracting surface or surfaces being different in different planes.
, This results in the focal lengths also being different in different planes (the curvature
of the cornea in the case of the eye)
Axis - ANSWERThe meridian of no cylinder power in a spherocylinder lens
Base - ANSWERThickest edge of a prism
Base curve - ANSWERThe curve used as a base of a series of powers; the degree of
curvature of the front surface of a lens
Beam - ANSWERA group of parallel rays of light
Binocular - ANSWERPertaining to vision with both eyes
Caliper - ANSWERInstrument used to measure thickness, calibrated in fifths and
tenths of a millimeter
Canthus - ANSWERThe angle at either end of the slit between the eyelids
Cataract - ANSWERA condition when the crystalline lens of the eye becomes opaque
Congenital cataract - ANSWEROne which originates at birth
Hyper-mature cataract - ANSWERThe lens has become either solid and shrunken or
soft and liquid
Incipient cataract - ANSWERAny cataract in its early stages
Mature cataract - ANSWERThe lens is completely opaque
Senile cataract - ANSWERA hard opacity of the lens occurring in the aged
Traumatic cataract - ANSWERCataract following an injury
Choroid - ANSWERVascular (blood-rich) layer of the eye; its function is to nourish the
other parts of the eye, primarily the retina
Chromatic aberration - ANSWERDistortion of an optical image produced by the
dispersion of light passing through a lens and generally characterized by blurred,
multicolored edges
Ciliary body - ANSWERThe thick rim of choroid to which the crystalline lens is
attached
Compound hyperopic astigmatism - ANSWERThe refractive error which results in two
points of focus falling behind the retina
Example: +1.00 +2.00 x 090
Exam Questions All With Complete Solutions /2024
Guide/Rated A+ /Guarantee Pass
Aberration - ANSWERDeviation from a single focus of light rays emanating from one
source
Accommodation - ANSWERThe ability of the eye to adjust focus for varying distances
Achromatic - ANSWERDescriptive of a lens capable of refracting light without
creating a rainbow effect
Acuity - ANSWERVisual expression of sharpness of vision (20\20 distance, J.1 near)
Addition - ANSWERDifference in plus power between the reading and distance
portions of a mulitfocal lens
Amblyopia - ANSWERLoss of vision without any apparent disease of the eye
Ametropia - ANSWERA refractive error in which the eye, when in a state of rest, does
not focus the image of an object upon the retina; includes hyperopia, myopia, and
astigmatism
Aniseikonia - ANSWERA condition in which the image of an object as seen by one eye
differs so much in size or shape from that seen by the other eye that the two images
cannot be fused into a single impression
Anisometropia - ANSWERA condition in which the refractive error of one eye
significantly differs from that of the other
Anterior chamber - ANSWERFront cavity or compartment of the eye, located
between the cornea and crystalline lens. Contains aqueous humor
Apex - ANSWERThinnest edge of a prism
Aphakia - ANSWERAbsence of the crystalline lens of the eye (pseudophakia; having a
false lens)
Aspheric - ANSWERNot spherical; a lens surface having a number of curves with
different radii
Astigmatism - ANSWERA defect of the eye, of a lens or of an image formed by either,
the curvature of the refracting surface or surfaces being different in different planes.
, This results in the focal lengths also being different in different planes (the curvature
of the cornea in the case of the eye)
Axis - ANSWERThe meridian of no cylinder power in a spherocylinder lens
Base - ANSWERThickest edge of a prism
Base curve - ANSWERThe curve used as a base of a series of powers; the degree of
curvature of the front surface of a lens
Beam - ANSWERA group of parallel rays of light
Binocular - ANSWERPertaining to vision with both eyes
Caliper - ANSWERInstrument used to measure thickness, calibrated in fifths and
tenths of a millimeter
Canthus - ANSWERThe angle at either end of the slit between the eyelids
Cataract - ANSWERA condition when the crystalline lens of the eye becomes opaque
Congenital cataract - ANSWEROne which originates at birth
Hyper-mature cataract - ANSWERThe lens has become either solid and shrunken or
soft and liquid
Incipient cataract - ANSWERAny cataract in its early stages
Mature cataract - ANSWERThe lens is completely opaque
Senile cataract - ANSWERA hard opacity of the lens occurring in the aged
Traumatic cataract - ANSWERCataract following an injury
Choroid - ANSWERVascular (blood-rich) layer of the eye; its function is to nourish the
other parts of the eye, primarily the retina
Chromatic aberration - ANSWERDistortion of an optical image produced by the
dispersion of light passing through a lens and generally characterized by blurred,
multicolored edges
Ciliary body - ANSWERThe thick rim of choroid to which the crystalline lens is
attached
Compound hyperopic astigmatism - ANSWERThe refractive error which results in two
points of focus falling behind the retina
Example: +1.00 +2.00 x 090
