COA JCAHPO EXAM QUESTIONS WITH CORRECT AND DETAILLED ANSWERS|LATEST
2025|A+ GUARANTEED
Disorders associated with headaches? -CORRECT ANSWER-Hypertension or Brain Tumor
Headaches caused by refractive error will not appear during? -CORRECT ANSWER-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? -CORRECT ANSWER-Between the lens and the cornea.
How many rods are there? -CORRECT ANSWER-125 million
Where are the rods located? -CORRECT ANSWER-In the retina
How many cones are there? -CORRECT ANSWER-6 million
Where are the cones located? -CORRECT ANSWER-In the retina.
Rods are best in what lighting condition? -CORRECT ANSWER-dim light
Without rods what condition will occur? -CORRECT ANSWER-night-blindness
,Rods are good in what color light? -CORRECT ANSWER-Red
What type of drops are used to dilate the eyes? -CORRECT ANSWER-Mydriatic drops
What type of drops are used to dilate the eyes and paralyze the fine focusing muscle for
near vision? -CORRECT ANSWER-Cycloplegic drops
Measuring PD starts from where and ends where? -CORRECT ANSWER-Nasal side of right
pupil to the temporal side of the pupil on the patients left eye.
What is Rhodopsin? -CORRECT ANSWER-Rod pigment. (allows for visual purple)
Rhodopsin forms in ______ and is destroyed by _____? -CORRECT ANSWER-forms in dark,
and is destroyed by light
Rhodopsin is composed of what Vitamin? -CORRECT ANSWER-Vitamin A (deficiency causes
night blindness)
What is Adie's Syndrome? -CORRECT ANSWER-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? -CORRECT
ANSWER-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? -CORRECT ANSWER-
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? -CORRECT ANSWER-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? -CORRECT ANSWER-Diabetes
High Blood Pressure (HTN)
Heart Health/ Cardiovascular Issues
Arthritis
What are the main symptoms of diplopia? -CORRECT ANSWER-Loss of alignment of eyes
(covering one eye will always eliminate the second image)
What is the cause of light flashes? -CORRECT ANSWER-Retinal detachment
What is the cause of Ptosis? -CORRECT ANSWER-3rd Nerve palsy or Diabetes
What is the cause of Diplopia? -CORRECT ANSWER-Thyroid Disorder
Diabetes
3rd Nerve Palsy
Myathenia Gravis
What is the cause of sudden loss of vision? -CORRECT ANSWER-Macular degeneration
Retinal Detachment
Retinal Vein or Artery Occlusion
Retrobulbar Neuritis
What is the cause of Foreign Body Sensation (FBS)? -CORRECT ANSWER-Corneal Abrasion
Herpes Simplex
What is the cause of blurred distance vision in adults? -CORRECT ANSWER-Diabetes
, Cataracts
Macular Edema
What is the cause of Halos around lights? -CORRECT ANSWER-Angle Closure Glaucoma
Cataracts
What is the cause of spots before the eye? -CORRECT ANSWER-Retinal Tear
Vitreous Detachment
What are the most important items to ask patients during work up? -CORRECT ANSWER-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? -CORRECT ANSWER-Discharge
Pain
Blurred Vision
What organism is the cause of Acute Conjunctivitis? -CORRECT ANSWER-Staph Aureus
What are some important familial history of common ocular defects? -CORRECT ANSWER-
Myopia
Strabismus
Glaucoma
What are the 6 steps to taking history? -CORRECT ANSWER-1. Chief Complaint
2. Secondary Problems of the eye
3. Systemic or general illness (current)
4. Past ocular disorders
2025|A+ GUARANTEED
Disorders associated with headaches? -CORRECT ANSWER-Hypertension or Brain Tumor
Headaches caused by refractive error will not appear during? -CORRECT ANSWER-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? -CORRECT ANSWER-Between the lens and the cornea.
How many rods are there? -CORRECT ANSWER-125 million
Where are the rods located? -CORRECT ANSWER-In the retina
How many cones are there? -CORRECT ANSWER-6 million
Where are the cones located? -CORRECT ANSWER-In the retina.
Rods are best in what lighting condition? -CORRECT ANSWER-dim light
Without rods what condition will occur? -CORRECT ANSWER-night-blindness
,Rods are good in what color light? -CORRECT ANSWER-Red
What type of drops are used to dilate the eyes? -CORRECT ANSWER-Mydriatic drops
What type of drops are used to dilate the eyes and paralyze the fine focusing muscle for
near vision? -CORRECT ANSWER-Cycloplegic drops
Measuring PD starts from where and ends where? -CORRECT ANSWER-Nasal side of right
pupil to the temporal side of the pupil on the patients left eye.
What is Rhodopsin? -CORRECT ANSWER-Rod pigment. (allows for visual purple)
Rhodopsin forms in ______ and is destroyed by _____? -CORRECT ANSWER-forms in dark,
and is destroyed by light
Rhodopsin is composed of what Vitamin? -CORRECT ANSWER-Vitamin A (deficiency causes
night blindness)
What is Adie's Syndrome? -CORRECT ANSWER-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? -CORRECT
ANSWER-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? -CORRECT ANSWER-
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? -CORRECT ANSWER-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? -CORRECT ANSWER-Diabetes
High Blood Pressure (HTN)
Heart Health/ Cardiovascular Issues
Arthritis
What are the main symptoms of diplopia? -CORRECT ANSWER-Loss of alignment of eyes
(covering one eye will always eliminate the second image)
What is the cause of light flashes? -CORRECT ANSWER-Retinal detachment
What is the cause of Ptosis? -CORRECT ANSWER-3rd Nerve palsy or Diabetes
What is the cause of Diplopia? -CORRECT ANSWER-Thyroid Disorder
Diabetes
3rd Nerve Palsy
Myathenia Gravis
What is the cause of sudden loss of vision? -CORRECT ANSWER-Macular degeneration
Retinal Detachment
Retinal Vein or Artery Occlusion
Retrobulbar Neuritis
What is the cause of Foreign Body Sensation (FBS)? -CORRECT ANSWER-Corneal Abrasion
Herpes Simplex
What is the cause of blurred distance vision in adults? -CORRECT ANSWER-Diabetes
, Cataracts
Macular Edema
What is the cause of Halos around lights? -CORRECT ANSWER-Angle Closure Glaucoma
Cataracts
What is the cause of spots before the eye? -CORRECT ANSWER-Retinal Tear
Vitreous Detachment
What are the most important items to ask patients during work up? -CORRECT ANSWER-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? -CORRECT ANSWER-Discharge
Pain
Blurred Vision
What organism is the cause of Acute Conjunctivitis? -CORRECT ANSWER-Staph Aureus
What are some important familial history of common ocular defects? -CORRECT ANSWER-
Myopia
Strabismus
Glaucoma
What are the 6 steps to taking history? -CORRECT ANSWER-1. Chief Complaint
2. Secondary Problems of the eye
3. Systemic or general illness (current)
4. Past ocular disorders
