CPOA UPDATED EVALUATION TEST QUESTIONS AND
ANSWERS MARKED A+
✔✔anomalous trichromat - ✔✔individual uses three colors but in different proportions
3 types:
protanomalous
deuteranomalous
tritanomalous
✔✔protanomalous - ✔✔red weakness
✔✔deuteranomalous - ✔✔green weakness
✔✔tritanomalous - ✔✔blue-yellow weakness
✔✔aphakia - ✔✔absence of the crystalline lens
✔✔aqueous humor - ✔✔-clear fluid produced in the ciliary processes
-fills the space from the posterior cornea to the anterior vitreous
-maintains IOP
-nourishes the cornea, iris, and lens
✔✔arcus senilis - ✔✔a ringshaped, grayish-white deposit of phospholipid and
cholesterol near the peripheral edge of the cornea
✔✔artificial tears - ✔✔topical eye-drops for use in the eye, formulated to relieve the
symptoms of dry eyes
✔✔a-scan - ✔✔instrument that uses sound waves to measure the eyeball length
✔✔astigmatism - ✔✔optical defect in which the light entering the eye doesn't form a
single point focus, but forms two focal points
5 types:
against-the-rule
irregular
lenticular
oblique
with-the-rule
✔✔against-the-rule astigmatism - ✔✔steeper in the horizontal meridian
✔✔with-the-rule astigmatism - ✔✔steeper in the vertical meridian (like a football lying on
its side)
, ✔✔irregular astigmatism - ✔✔principal meridians are not 90 degrees apart or when they
are not uniformly positioned from point along a meridian
✔✔lenticular astigmatism - ✔✔astigmatism of the crystalline lens
✔✔blique astigmatism - ✔✔meridians are between 30-60 degrees and 120-150
degrees
✔✔axial length - ✔✔the length of the eyeball from the cornea to the posterior pole
✔✔back vertex power (BVP) - ✔✔the vergence power expressed with reference to the
posterior surface of a lens
✔✔basal cell carcinoma - ✔✔common malignancy of the eyelids as a result of
excessive exposure to sunight
✔✔base curve - ✔✔reference surface of an ophthalmic lens classified by the
manufacturer, maybe on the front or back surface
✔✔base curve radius (BCR) - ✔✔back central region of the contact lens
✔✔basic secretors - ✔✔glands whose rate of production is relatively constant
✔✔benzalkonium chloride (BAK) - ✔✔a preservative used in topical eye drop
preparations
✔✔benzyl alcohol - ✔✔preservative used in GP lens solution
✔✔beta blocker - ✔✔a drug whose topical effects lower IOP by decreasing aqueous
production and whose systemic effects include slowing of the heart rate
✔✔binocular - ✔✔simultaneous use of both eyes
✔✔binocularity - ✔✔ability to maintain both eyes pointed at precisely the same object
(teaming)
✔✔bitoric lenses - ✔✔-a lens having toroidal surfaces on both sides
-used to correct astigmatism and aniseikonia
✔✔blending - ✔✔a technique used to render edges of a bifocal almost invisible
✔✔blepharitis - ✔✔inflammation of the lid margin
✔✔blepharoconjunctivitis - ✔✔inflammation of the lid margin and adjacent conjunctiva
ANSWERS MARKED A+
✔✔anomalous trichromat - ✔✔individual uses three colors but in different proportions
3 types:
protanomalous
deuteranomalous
tritanomalous
✔✔protanomalous - ✔✔red weakness
✔✔deuteranomalous - ✔✔green weakness
✔✔tritanomalous - ✔✔blue-yellow weakness
✔✔aphakia - ✔✔absence of the crystalline lens
✔✔aqueous humor - ✔✔-clear fluid produced in the ciliary processes
-fills the space from the posterior cornea to the anterior vitreous
-maintains IOP
-nourishes the cornea, iris, and lens
✔✔arcus senilis - ✔✔a ringshaped, grayish-white deposit of phospholipid and
cholesterol near the peripheral edge of the cornea
✔✔artificial tears - ✔✔topical eye-drops for use in the eye, formulated to relieve the
symptoms of dry eyes
✔✔a-scan - ✔✔instrument that uses sound waves to measure the eyeball length
✔✔astigmatism - ✔✔optical defect in which the light entering the eye doesn't form a
single point focus, but forms two focal points
5 types:
against-the-rule
irregular
lenticular
oblique
with-the-rule
✔✔against-the-rule astigmatism - ✔✔steeper in the horizontal meridian
✔✔with-the-rule astigmatism - ✔✔steeper in the vertical meridian (like a football lying on
its side)
, ✔✔irregular astigmatism - ✔✔principal meridians are not 90 degrees apart or when they
are not uniformly positioned from point along a meridian
✔✔lenticular astigmatism - ✔✔astigmatism of the crystalline lens
✔✔blique astigmatism - ✔✔meridians are between 30-60 degrees and 120-150
degrees
✔✔axial length - ✔✔the length of the eyeball from the cornea to the posterior pole
✔✔back vertex power (BVP) - ✔✔the vergence power expressed with reference to the
posterior surface of a lens
✔✔basal cell carcinoma - ✔✔common malignancy of the eyelids as a result of
excessive exposure to sunight
✔✔base curve - ✔✔reference surface of an ophthalmic lens classified by the
manufacturer, maybe on the front or back surface
✔✔base curve radius (BCR) - ✔✔back central region of the contact lens
✔✔basic secretors - ✔✔glands whose rate of production is relatively constant
✔✔benzalkonium chloride (BAK) - ✔✔a preservative used in topical eye drop
preparations
✔✔benzyl alcohol - ✔✔preservative used in GP lens solution
✔✔beta blocker - ✔✔a drug whose topical effects lower IOP by decreasing aqueous
production and whose systemic effects include slowing of the heart rate
✔✔binocular - ✔✔simultaneous use of both eyes
✔✔binocularity - ✔✔ability to maintain both eyes pointed at precisely the same object
(teaming)
✔✔bitoric lenses - ✔✔-a lens having toroidal surfaces on both sides
-used to correct astigmatism and aniseikonia
✔✔blending - ✔✔a technique used to render edges of a bifocal almost invisible
✔✔blepharitis - ✔✔inflammation of the lid margin
✔✔blepharoconjunctivitis - ✔✔inflammation of the lid margin and adjacent conjunctiva
