CPOA Basic Science 4

Question 1

Which refractive error is characterized by the eyeball being too long, causing light to focus in front of the retina?

Accepted Answer

Myopia

Answer

Myopia (nearsightedness) results from an axially elongated globe or overly curved cornea, causing parallel light rays to converge anterior to the retina.

Question 2

The conjunctiva is classified as which type of tissue?

Accepted Answer

Columnar epithelium with goblet cells

Answer

The conjunctiva is composed of non-keratinized stratified columnar epithelium containing goblet cells that secrete the mucin layer of the tear film.

Question 3

Which portion of the autonomic nervous system causes pupillary constriction (miosis)?

Accepted Answer

Parasympathetic nervous system

Answer

The parasympathetic nervous system, via CN III and the ciliary ganglion, innervates the sphincter pupillae to constrict the pupil.

Question 4

The vitreous humor occupies which space within the eye?

Accepted Answer

Behind the lens to the retina

Answer

The vitreous humor is the gel-like substance that fills the posterior segment of the eye, from the back of the lens to the retina.

Question 5

A patient with 20/20 vision in one eye and 20/200 in the other who best-corrects to 20/20 in the weaker eye most likely has:

Accepted Answer

Amblyopia

Answer

Amblyopia (lazy eye) is reduced best-corrected visual acuity in an eye without detectable organic disease; the vision cannot be fully corrected with glasses alone.

(CPOA) Certified Paraoptometric Assistant Practice Test

(CPOA) Certified Paraoptometric Assistant Practice Test

CPOA Basic Science 4