OPTICIAN LATEST 2026 EXAM QUESTIONS AND
SOLUTIONS RATED A+
✔✔Box system - ✔✔standard method for measuring lens and frame dimensions
✔✔Bridge - ✔✔area frame front between right and left lens that connect the eye wires
✔✔Canal of Schlemm - ✔✔circular channel located at the junction of the sclera and
cornea
✔✔Canthi - ✔✔two angles where the upper and lower lids meet, medial toward nose
and lateral is toward the ears
✔✔Carbon fiber frames - ✔✔frame material by adding carbon to zyl materials
✔✔Cataract - ✔✔crystalline lens of the eye that becomes opaque
✔✔CC or Chief Complaint - ✔✔main reason for requesting an eye exam
✔✔_cc: - ✔✔abbreviation for patient being tested wearing their current correction
✔✔Cellulose propionate - ✔✔commonly known as Propionate, frame material stronger,
thinner, and lighter than zyl
✔✔Center of rotation - ✔✔imaginary point around which the eyeball pivots
✔✔Choroid - ✔✔vascular layer of the eye lying between the retina and sclera
✔✔Chromatic aberration - ✔✔breaking up of white light by a lens material, which can
manifest itself t the wearer as blur or color fringes around objects viewed through
periphery lens
✔✔Ciliary body - ✔✔portion of vascular coat between the iris and the choroid containing
the ciliary muscle
✔✔Ciliary processes - ✔✔responsible for the major production of aqueous fluid.
✔✔Compensated power - ✔✔power of a lens required to compensate for a change in
the refracted vertex distance
✔✔Compund lens - ✔✔lens with both sphere and cylinder
✔✔Cones - ✔✔the cells in the retina that are responsible for fine detail and color
, ✔✔Conjunctiva - ✔✔thin transparent mucous membrane which lines the posterior
surface of eyelids
✔✔Conjunctivitis - ✔✔inflammation of the conjunctiva
✔✔Convergence - ✔✔rotation of the eyes inward
✔✔Cornea - ✔✔clear, transparent structure at the front of the eye
✔✔Cornea Ulcers - ✔✔erosion of the cornea by bacteria, injury or disease.
✔✔Crystalline lens - ✔✔transparent, colorless body suspended between the aqueous
and vitreous, hind the iris.
✔✔C-size - ✔✔the measurement in millimeters of the circumference of an edged lens
✔✔Cycloplegia - ✔✔paralysis of accommodation which can be induced by certain eye
drops
✔✔Cylinder power - ✔✔power in a lens needed to correct astigmatism by focusing light
in meridian
✔✔Daily disposable contact lenses - ✔✔soft cls worn once and tossed
✔✔Daily wear - ✔✔soft cls that are worn and removed nightly
✔✔Datum line - ✔✔horizontal reference line at the vertical midpoint between top and
bottom of a lens, 180 line, oc ground on this line
✔✔DBL (distance between lens) - ✔✔bridge size or closest distance between two lens
on a frame
✔✔Depth perception - ✔✔ability to judge distance of objects from observer and relative
to each other.
✔✔Diopter - ✔✔unit of measure that describes the refractive power of a lens 1 meter
has 1 diopter
✔✔Diplopia - ✔✔double vision
✔✔Disinfectant - ✔✔any solution that will kill microorganisms
✔✔Disperson - ✔✔breaking up of white light in to its component colors
SOLUTIONS RATED A+
✔✔Box system - ✔✔standard method for measuring lens and frame dimensions
✔✔Bridge - ✔✔area frame front between right and left lens that connect the eye wires
✔✔Canal of Schlemm - ✔✔circular channel located at the junction of the sclera and
cornea
✔✔Canthi - ✔✔two angles where the upper and lower lids meet, medial toward nose
and lateral is toward the ears
✔✔Carbon fiber frames - ✔✔frame material by adding carbon to zyl materials
✔✔Cataract - ✔✔crystalline lens of the eye that becomes opaque
✔✔CC or Chief Complaint - ✔✔main reason for requesting an eye exam
✔✔_cc: - ✔✔abbreviation for patient being tested wearing their current correction
✔✔Cellulose propionate - ✔✔commonly known as Propionate, frame material stronger,
thinner, and lighter than zyl
✔✔Center of rotation - ✔✔imaginary point around which the eyeball pivots
✔✔Choroid - ✔✔vascular layer of the eye lying between the retina and sclera
✔✔Chromatic aberration - ✔✔breaking up of white light by a lens material, which can
manifest itself t the wearer as blur or color fringes around objects viewed through
periphery lens
✔✔Ciliary body - ✔✔portion of vascular coat between the iris and the choroid containing
the ciliary muscle
✔✔Ciliary processes - ✔✔responsible for the major production of aqueous fluid.
✔✔Compensated power - ✔✔power of a lens required to compensate for a change in
the refracted vertex distance
✔✔Compund lens - ✔✔lens with both sphere and cylinder
✔✔Cones - ✔✔the cells in the retina that are responsible for fine detail and color
, ✔✔Conjunctiva - ✔✔thin transparent mucous membrane which lines the posterior
surface of eyelids
✔✔Conjunctivitis - ✔✔inflammation of the conjunctiva
✔✔Convergence - ✔✔rotation of the eyes inward
✔✔Cornea - ✔✔clear, transparent structure at the front of the eye
✔✔Cornea Ulcers - ✔✔erosion of the cornea by bacteria, injury or disease.
✔✔Crystalline lens - ✔✔transparent, colorless body suspended between the aqueous
and vitreous, hind the iris.
✔✔C-size - ✔✔the measurement in millimeters of the circumference of an edged lens
✔✔Cycloplegia - ✔✔paralysis of accommodation which can be induced by certain eye
drops
✔✔Cylinder power - ✔✔power in a lens needed to correct astigmatism by focusing light
in meridian
✔✔Daily disposable contact lenses - ✔✔soft cls worn once and tossed
✔✔Daily wear - ✔✔soft cls that are worn and removed nightly
✔✔Datum line - ✔✔horizontal reference line at the vertical midpoint between top and
bottom of a lens, 180 line, oc ground on this line
✔✔DBL (distance between lens) - ✔✔bridge size or closest distance between two lens
on a frame
✔✔Depth perception - ✔✔ability to judge distance of objects from observer and relative
to each other.
✔✔Diopter - ✔✔unit of measure that describes the refractive power of a lens 1 meter
has 1 diopter
✔✔Diplopia - ✔✔double vision
✔✔Disinfectant - ✔✔any solution that will kill microorganisms
✔✔Disperson - ✔✔breaking up of white light in to its component colors
