Free COMT Practice Questions
Original questions with explanations
These original COMT practice questions are educational examples designed to exercise reasoning. They are not recalled exam items and do not imply access to live or confidential test content.
Question 1
Which technique objectively estimates refractive error by observing the movement of the retinal reflex?
- A. Retinoscopy
- B. Tonometry
- C. Pachymetry
- D. Gonioscopy
Answer and explanation
A. Retinoscopy Retinoscopy uses the motion and characteristics of the retinal reflex to estimate refractive error.
Question 2
What does pachymetry measure?
- A. Corneal thickness
- B. Axial length
- C. Lens power
- D. Pupil diameter
Answer and explanation
A. Corneal thickness Pachymetry measures corneal thickness, a value relevant to several diagnostic and surgical assessments.
Question 3
Fluorescein angiography is primarily used to evaluate what?
- A. Retinal and choroidal circulation
- B. Extraocular muscle strength
- C. Spectacle-lens power
- D. Anterior chamber depth only
Answer and explanation
A. Retinal and choroidal circulation Fluorescein angiography documents circulation and leakage patterns in retinal and choroidal vessels.
Question 4
Which finding can indicate an unreliable automated visual field?
- A. Excessive fixation losses
- B. A centered pupil
- C. Correct near correction
- D. Clear patient instructions
Answer and explanation
A. Excessive fixation losses High fixation-loss, false-positive, or false-negative indices can reduce confidence in the reliability of a visual-field result.
Question 5
What is the purpose of the prism-and-cover test?
- A. Quantify ocular deviation
- B. Measure corneal thickness
- C. Assess color vision
- D. Measure intraocular pressure
Answer and explanation
A. Quantify ocular deviation Prisms neutralize refixation movement during cover testing, allowing the examiner to quantify ocular misalignment.
How to Review Your Results
For every missed item, name the tested concept, explain why the correct option is best, and identify the clue that rules out each distractor. Then review the corresponding official content domain.