California Optometrist Licensing Exam
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the most common cause of irreversible blindness in the United
States?
A. Cataract
B. Diabetic Retinopathy
C. Glaucoma
D. Retinal Detachment
Glaucoma causes progressive optic nerve damage and is often
asymptomatic until advanced stages, making it the leading cause of
irreversible blindness.
2. Which of the following topical medications is contraindicated in patients
with narrow-angle glaucoma?
A. Brimonidine
B. Tropicamide
C. Timolol
D. Latanoprost
Tropicamide is a mydriatic that can precipitate angle-closure in narrow-
angle glaucoma.
,3. A patient has a best-corrected visual acuity of 20/200 in the better eye.
How is this classified under California law?
A. Low vision
B. Legally impaired
C. Legally blind
D. Partially sighted
Legal blindness is defined as best-corrected vision of 20/200 or worse in
the better eye.
4. Which of the following findings is most consistent with a diagnosis of
age-related macular degeneration?
A. Drusen in the macula
B. Retinal detachment
C. Cotton wool spots
D. Neovascular tufts
Drusen, or yellow deposits under the retina, are characteristic of macular
degeneration.
5. Which antibiotic is safe for a patient with a documented penicillin
allergy?
A. Amoxicillin
B. Dicloxacillin
C. Cephalexin
D. Erythromycin
Erythromycin, a macrolide, does not cross-react with penicillin allergies.
6. Intraocular pressure is primarily regulated by which structure?
A. Cornea
B. Vitreous humor
C. Trabecular meshwork
D. Lens
, The trabecular meshwork controls the outflow of aqueous humor, directly
influencing IOP.
7. Which of the following is a sign of diabetic retinopathy?
A. Drusen
B. Neovascularization
C. Retinal detachment
D. Pale optic disc
Neovascularization is a hallmark of proliferative diabetic retinopathy.
8. What is the mechanism of action of latanoprost?
A. Beta-blocker
B. Carbonic anhydrase inhibitor
C. Prostaglandin analog
D. Cholinergic agonist
Latanoprost increases uveoscleral outflow via prostaglandin receptor
activation.
9. Which of the following is a requirement for therapeutic pharmaceutical
agent (TPA) certification in California?
A. Passing NBEO Part III only
B. Completion of 20-hour TPA course approved by the California State
Board
C. DEA license
D. Medical degree
California requires a TPA-certified optometrist to complete board-
approved pharmacology training.
10. Which of the following conditions must be reported to the DMV in
California by an optometrist?
A. Myopia
B. Visual acuity worse than 20/200 in both eyes
C. Conjunctivitis
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the most common cause of irreversible blindness in the United
States?
A. Cataract
B. Diabetic Retinopathy
C. Glaucoma
D. Retinal Detachment
Glaucoma causes progressive optic nerve damage and is often
asymptomatic until advanced stages, making it the leading cause of
irreversible blindness.
2. Which of the following topical medications is contraindicated in patients
with narrow-angle glaucoma?
A. Brimonidine
B. Tropicamide
C. Timolol
D. Latanoprost
Tropicamide is a mydriatic that can precipitate angle-closure in narrow-
angle glaucoma.
,3. A patient has a best-corrected visual acuity of 20/200 in the better eye.
How is this classified under California law?
A. Low vision
B. Legally impaired
C. Legally blind
D. Partially sighted
Legal blindness is defined as best-corrected vision of 20/200 or worse in
the better eye.
4. Which of the following findings is most consistent with a diagnosis of
age-related macular degeneration?
A. Drusen in the macula
B. Retinal detachment
C. Cotton wool spots
D. Neovascular tufts
Drusen, or yellow deposits under the retina, are characteristic of macular
degeneration.
5. Which antibiotic is safe for a patient with a documented penicillin
allergy?
A. Amoxicillin
B. Dicloxacillin
C. Cephalexin
D. Erythromycin
Erythromycin, a macrolide, does not cross-react with penicillin allergies.
6. Intraocular pressure is primarily regulated by which structure?
A. Cornea
B. Vitreous humor
C. Trabecular meshwork
D. Lens
, The trabecular meshwork controls the outflow of aqueous humor, directly
influencing IOP.
7. Which of the following is a sign of diabetic retinopathy?
A. Drusen
B. Neovascularization
C. Retinal detachment
D. Pale optic disc
Neovascularization is a hallmark of proliferative diabetic retinopathy.
8. What is the mechanism of action of latanoprost?
A. Beta-blocker
B. Carbonic anhydrase inhibitor
C. Prostaglandin analog
D. Cholinergic agonist
Latanoprost increases uveoscleral outflow via prostaglandin receptor
activation.
9. Which of the following is a requirement for therapeutic pharmaceutical
agent (TPA) certification in California?
A. Passing NBEO Part III only
B. Completion of 20-hour TPA course approved by the California State
Board
C. DEA license
D. Medical degree
California requires a TPA-certified optometrist to complete board-
approved pharmacology training.
10. Which of the following conditions must be reported to the DMV in
California by an optometrist?
A. Myopia
B. Visual acuity worse than 20/200 in both eyes
C. Conjunctivitis
