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CPO TEST EXAM
CPO EXAM 2 Questions And
Answers Graded A+ Latest
Version 2025
Sinuses - ANS ✔air spaces within the bones. Poor drainage, infection, or
cancerous enlargement of the sinuses may cause headaches, pain around
eye, or pain from behind the eye
Conjunctiva - ANS ✔the clear, cellophane-like tissue that covers the
sclera and the inside surface of the eyelids.
Palpebral Conjunctiva - ANS ✔Lines the lids
Bulbar Conjunctiva - ANS ✔Covers the sclera
Cornea - ANS ✔the clear, transparent tissue which is located on the very
anterior portion of the eye. Most powerful refractive media of the eye.
CPO TEST EXAM QUESTIONS AND ANSWERS
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CPO TEST EXAM
Provides most of the eye's ability to focus light. It is avascular. A slight
furrow marks its junction with the sclera. It has 5 layers.
Cornea's 5 Layers (front to back) - ANS ✔1. Epithelium
2. Bowman's layer
3. Stroma
4. Descemet's membrane
5. Endothelium
Limbus - ANS ✔The junction of the sclera and the cornea.
Iris - ANS ✔the coloured part of the eye. Consists of 2 muscles with a hole
in the middle (the pupil). The iris sphincter and dilator muscles control the
size of the pupil for maximum visual performance
Anterior Chamber - ANS ✔Area inside the eye, behind the cornea and in
front of the iris. This area is filled with clear, watery fluid called aqueous
humour
Aqueous Humour - ANS ✔Clear watery fluid produced by the ciliary
body. It fills the front part of the posterior chamber and the entire anterior
chamber. It provides nutrients for the lens and posterior cornea and carries
CPO TEST EXAM QUESTIONS AND ANSWERS
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CPO TEST EXAM
away waste products. It is also responsible for maintain the intraocular
pressure because it is the only fluid continually produced in the eye
Crystalline lens - ANS ✔provides focusing power to the eye. Allows for
adjustment of the eye to focus from distance to near (accommodation). The
second most powerful refractive medium. Held in place by ciliary body
(ligaments)
Ciliary Muscles - ANS ✔the muscle inside the eyeball which alters the
shape of the crystalline lens. It has direct control over the focusing ability of
the eye
Accommodation - ANS ✔The focusing ability of the eye
Posterior Chamber - ANS ✔the area located inside the eye, behind the
iris and in front of the lens
Retina - ANS ✔the seeing part of the eye. Lines the sclera and is the place
where light coming into the eye is focused. Images that fall on the nerve
cells of the retina are then transmitted to the brain where they are
interpreted
CPO TEST EXAM QUESTIONS AND ANSWERS
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CPO TEST EXAM
Choroid - ANS ✔consists primarily of blood vessels that nourish the
retina so it can continue to function. It is between the sclera and the retina
Vitreous Humour - ANS ✔a thick, clear, jelly like substance that fills the
eye between the lens and the retina. This serves to support the retina and
helps to keep the eye round
Macula - ANS ✔Fovea the central part of the retina which is used for
seeing detail. It is an area 3-5 mm in diameter, with the foveal depression at
its centre
Fovea Centralis - ANS ✔area in the macula approximately 1.5mm in
diameter where the visual acuity is the sharpest. The fovea contains the
highest number of cones, which are responsible for daytime vision and
colour vision
Optic Nerve - ANS ✔the nerve that carries impulses from the retina to the
brain. It transmits the signals from the rods and cones to the brain
Optic Disc - ANS ✔the appearance of the optic nerve when viewed
through pupil. The portion of the optic nerve which is formed by the
meeting of all the retinal nerve fibbers. It is insensitive to light and
corresponds to the physiological blind spot. The appearance of the optic
disc can be used to determine the healthiness of the nerve itself
CPO TEST EXAM QUESTIONS AND ANSWERS
CPO TEST EXAM
CPO EXAM 2 Questions And
Answers Graded A+ Latest
Version 2025
Sinuses - ANS ✔air spaces within the bones. Poor drainage, infection, or
cancerous enlargement of the sinuses may cause headaches, pain around
eye, or pain from behind the eye
Conjunctiva - ANS ✔the clear, cellophane-like tissue that covers the
sclera and the inside surface of the eyelids.
Palpebral Conjunctiva - ANS ✔Lines the lids
Bulbar Conjunctiva - ANS ✔Covers the sclera
Cornea - ANS ✔the clear, transparent tissue which is located on the very
anterior portion of the eye. Most powerful refractive media of the eye.
CPO TEST EXAM QUESTIONS AND ANSWERS
, 2
CPO TEST EXAM
Provides most of the eye's ability to focus light. It is avascular. A slight
furrow marks its junction with the sclera. It has 5 layers.
Cornea's 5 Layers (front to back) - ANS ✔1. Epithelium
2. Bowman's layer
3. Stroma
4. Descemet's membrane
5. Endothelium
Limbus - ANS ✔The junction of the sclera and the cornea.
Iris - ANS ✔the coloured part of the eye. Consists of 2 muscles with a hole
in the middle (the pupil). The iris sphincter and dilator muscles control the
size of the pupil for maximum visual performance
Anterior Chamber - ANS ✔Area inside the eye, behind the cornea and in
front of the iris. This area is filled with clear, watery fluid called aqueous
humour
Aqueous Humour - ANS ✔Clear watery fluid produced by the ciliary
body. It fills the front part of the posterior chamber and the entire anterior
chamber. It provides nutrients for the lens and posterior cornea and carries
CPO TEST EXAM QUESTIONS AND ANSWERS
, 3
CPO TEST EXAM
away waste products. It is also responsible for maintain the intraocular
pressure because it is the only fluid continually produced in the eye
Crystalline lens - ANS ✔provides focusing power to the eye. Allows for
adjustment of the eye to focus from distance to near (accommodation). The
second most powerful refractive medium. Held in place by ciliary body
(ligaments)
Ciliary Muscles - ANS ✔the muscle inside the eyeball which alters the
shape of the crystalline lens. It has direct control over the focusing ability of
the eye
Accommodation - ANS ✔The focusing ability of the eye
Posterior Chamber - ANS ✔the area located inside the eye, behind the
iris and in front of the lens
Retina - ANS ✔the seeing part of the eye. Lines the sclera and is the place
where light coming into the eye is focused. Images that fall on the nerve
cells of the retina are then transmitted to the brain where they are
interpreted
CPO TEST EXAM QUESTIONS AND ANSWERS
, 4
CPO TEST EXAM
Choroid - ANS ✔consists primarily of blood vessels that nourish the
retina so it can continue to function. It is between the sclera and the retina
Vitreous Humour - ANS ✔a thick, clear, jelly like substance that fills the
eye between the lens and the retina. This serves to support the retina and
helps to keep the eye round
Macula - ANS ✔Fovea the central part of the retina which is used for
seeing detail. It is an area 3-5 mm in diameter, with the foveal depression at
its centre
Fovea Centralis - ANS ✔area in the macula approximately 1.5mm in
diameter where the visual acuity is the sharpest. The fovea contains the
highest number of cones, which are responsible for daytime vision and
colour vision
Optic Nerve - ANS ✔the nerve that carries impulses from the retina to the
brain. It transmits the signals from the rods and cones to the brain
Optic Disc - ANS ✔the appearance of the optic nerve when viewed
through pupil. The portion of the optic nerve which is formed by the
meeting of all the retinal nerve fibbers. It is insensitive to light and
corresponds to the physiological blind spot. The appearance of the optic
disc can be used to determine the healthiness of the nerve itself
CPO TEST EXAM QUESTIONS AND ANSWERS
