COA Ophthalmic Instruments and Procedures 2

Question 1

What is the primary function of the Goldmann applanation tonometer?

Accepted Answer

Measure intraocular pressure

Answer

The Goldmann applanation tonometer is considered the gold standard for measuring intraocular pressure.

Question 2

Which instrument is used to measure corneal thickness (pachymetry)?

Accepted Answer

Pachymeter

Answer

A pachymeter measures corneal thickness, which affects IOP accuracy and refractive surgery candidacy.

Question 3

The Humphrey Visual Field Analyzer performs which type of perimetry?

Accepted Answer

Static automated perimetry

Answer

The Humphrey Field Analyzer uses static automated perimetry, presenting stationary stimuli at varying intensities.

Question 4

What is the function of a pupillometer in ophthalmic practice?

Accepted Answer

Measure the interpupillary distance

Answer

A pupillometer measures the pupillary distance (PD) to ensure optical centers of lenses align with visual axes.

Question 5

Specular microscopy is used to evaluate which ocular structure?

Accepted Answer

Corneal endothelium

Answer

Specular microscopy images corneal endothelial cells to assess their density, size, and morphology.

COA - Certified Ophthalmic Assistant Practice Test