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COA JCAHPO Test: Questions & Accurate Answers
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COA JCAHPO Test: Questions & Accurate Answers
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COA JCAHPO Test: Questions & Accurate AnswersDisorders associated with headaches? Right Ans - Hypertension or Brain
Tumor
Headaches caused by refractive error will not appear during? Right Ans - 1.
Not appear at night
2. Will not appear during sleep
3. Will not appear when you wake up
Where is the aqueous humor located? Right Ans - Between the lens and the
cornea.
How many rods are there? Right Ans - 125 million
Where are the rods located? Right Ans - In the retina
How many cones are there? Right Ans - 6 million
Where are the cones located? Right Ans - In the retina.
Rods are best in what lighting condition? Right Ans - dim light
Without rods what condition will occur? Right Ans - night-blindness
Rods are good in what color light? Right Ans - Red
What type of drops are used to dilate the eyes? Right Ans - Mydriatic drops
What type of drops are used to dilate the eyes and paralyze the fine focusing
muscle for near vision? Right Ans - Cycloplegic drops
Measuring PD starts from where and ends where? Right Ans - Nasal side of
right pupil to the temporal side of the pupil on the patients left eye.
What is Rhodopsin? Right Ans - Rod pigment. (allows for visual purple)
Rhodopsin forms in ______ and is destroyed by _____? Right Ans - forms in
dark, and is destroyed by light
,Rhodopsin is composed of what Vitamin? Right Ans - Vitamin A (deficiency
causes night blindness)
What is Adie's Syndrome? Right Ans - Tonic Pupil. (pupil responds to light
stimulation very slowly)
How do you measure a patient's PD when they can only see from one eye?
Right Ans - measure from center of the pupil of the good eye to the center of
the bridge of the nose
How do you measure a patient's PD when they have unequal pupils? Right
Ans - measure from nasal side of the limbus of patients right eye to the
temporal side of the limbus of the left eye.
How do you measure a patient's PD when they have a squint? Right Ans -
Measure from the inner canthus of one eye to the outer canthus of the
opposite eye.
What are the most important disorders to ask patients about? Right Ans -
Diabetes
High Blood Pressure (HTN)
Heart Health/ Cardiovascular Issues
Arthritis
What are the main symptoms of diplopia? Right Ans - Loss of alignment of
eyes
(covering one eye will always eliminate the second image)
What is the cause of light flashes? Right Ans - Retinal detachment
What is the cause of Ptosis? Right Ans - 3rd Nerve palsy or Diabetes
What is the cause of Diplopia? Right Ans - Thyroid Disorder
Diabetes
3rd Nerve Palsy
Myathenia Gravis
,What is the cause of sudden loss of vision? Right Ans - Macular
degeneration
Retinal Detachment
Retinal Vein or Artery Occlusion
Retrobulbar Neuritis
What is the cause of Foreign Body Sensation (FBS)? Right Ans - Corneal
Abrasion
Herpes Simplex
What is the cause of blurred distance vision in adults? Right Ans - Diabetes
Cataracts
Macular Edema
What is the cause of Halos around lights? Right Ans - Angle Closure
Glaucoma
Cataracts
What is the cause of spots before the eye? Right Ans - Retinal Tear
Vitreous Detachment
What are the most important items to ask patients during work up? Right
Ans - 1. Present and Past Health History
2. Medication (current and exact name/ purpose)
3. Allergies (drug, inhalants, contactants, food, injections, ingestants)
What symptoms are associated with Acute conjunctivitis? Right Ans -
Discharge
Pain
Blurred Vision
What organism is the cause of Acute Conjunctivitis? Right Ans - Staph
Aureus
What are some important familial history of common ocular defects? Right
Ans - Myopia
Strabismus
Glaucoma
, What are the 6 steps to taking history? Right Ans - 1. Chief Complaint
2. Secondary Problems of the eye
3. Systemic or general illness (current)
4. Past ocular disorders
5. Wear contacts or glasses?
6. Therapies, response to therapies
What are the three main layers of tears? Right Ans - Oily Layer (outer)
Aqueous Layer (middle)
Mucin Layer ( inner)
What is the flow path of the aqueous humor? (PPATSA) Right Ans -
(PPATSA)
Posterior Chamber---Pupil---Anterior Chamber---Trabecular Meshwork---
Schlemm's Canal---Aqueous Vein
Lens of the eye? Right Ans - A biconvex structure that light passes through.
Vitreous Body? Right Ans - Fluid filled space located behind the lens,
occupies 2/3rds of the volume of the eye.
Name the drops used that do not have cycloplegic effects.
(CHEEP) Right Ans - cocaine (anesthetic)
hydroxaphetamine
eucatropine hydrochloride
epinepherine (adrenalin)
phenylephrine (not used anymore, bad for heart)
Example of Cycloplegic Agents.
(TCASH) Right Ans - Atropine (most powerful)
homatropine
Scopolamine
Cyclopentolate
Tropicamide
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