COT Visual Field Testing 3

Question 1

The Esterman binocular visual field test is most commonly used to assess:

Accepted Answer

Driving fitness and functional visual disability

Answer

The Esterman binocular test evaluates the functional visual field for activities like driving and is used in disability and legal assessments.

Question 2

A patient with a nasal step defect on automated perimetry most likely has damage to which structure?

Accepted Answer

Retinal nerve fiber layer at the horizontal raphe

Answer

Nasal step defects occur because the horizontal raphe divides the superior and inferior retinal nerve fiber layers, and asymmetric damage creates a step at the nasal horizontal midline.

Question 3

When testing a patient with a dense central scotoma, which test pattern is most appropriate for monitoring residual peripheral field?

Accepted Answer

30-2 program

Answer

The 30-2 program tests out to 30° and is better suited for monitoring peripheral field when central vision is severely compromised.

Question 4

Which reliability index specifically measures the frequency at which a patient fails to respond to a previously seen suprathreshold stimulus?

Accepted Answer

False negative rate

Answer

The false negative rate measures how often a patient does not respond to stimuli significantly brighter than their established threshold, suggesting inattention or fatigue.

Question 5

Goldmann kinetic perimetry uses moving stimuli from non-seeing to seeing areas. This technique is especially useful for:

Accepted Answer

Mapping large or irregular scotomas and testing patients who cannot perform static perimetry

Answer

Kinetic perimetry excels at mapping the full extent of scotomas and is ideal for patients with very poor vision, neurological conditions, or who cannot maintain fixation for static testing.

COT - Certified Ophthalmic Technician Practice Test

COT - Certified Ophthalmic Technician Practice Test

COT Visual Field Testing 3