CMA Diagnostic Procedures 5

Question 1

How far should a patient stand from a Snellen chart during distance vision screening?

Accepted Answer

20 feet

Answer

The Snellen test is standardized at 20 feet.

Question 2

A visual acuity result of 20/40 means the patient:

Accepted Answer

Sees at 20 feet what a normal eye sees at 40 feet

Answer

The top number is the testing distance, and the bottom number is the distance at which a normal eye could read that line.

Question 3

The Ishihara test is used to screen for:

Accepted Answer

Color vision deficiency

Answer

Ishihara plates show numbers made of colored dots to detect color blindness.

Question 4

Spirometry is mainly used to measure:

Accepted Answer

Lung volumes and airflow

Answer

Spirometry measures values such as FVC and FEV1 to assess lung function.

Question 5

What is the normal fasting blood glucose range for an adult?

Accepted Answer

70-99 mg/dL

Answer

A normal fasting glucose is 70 to 99 mg/dL; 100 to 125 suggests prediabetes.

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