A nurse reviewing a client's record notes that the result of the client's latest Snellen chart vision test was 20/80. The nurse interprets the client's results in which way?

Correct Answer: D

Rationale: When interpreting visual acuity testing results using the Snellen chart, the recorded numeric fraction represents the distance the client is standing from the chart and the distance a normal eye could read that particular line. A reading of 20/80 means that the client can read at 20 feet what a client with normal vision can read at 80 feet. This indicates visual impairment but does not meet the criteria for legal blindness, which is defined as best-corrected vision in the better eye of 20/200 or worse. Normal visual acuity is 20/20. Therefore, the correct interpretation is that the client can read at a distance of 80 feet what a client with normal vision can read at 20 feet. Choice A is incorrect because 20/80 does not meet the criteria for legal blindness. Choice B is incorrect as the client's vision is impaired. Choice C is incorrect because it reverses the interpretation of the fraction.

Correct Answer: C

Rationale: An ophthalmoscope is a tool used to visualize the internal structures of the eye during an examination. The optic disc, located on the internal surface of the retina, can be best visualized using an ophthalmoscope. The iris, cornea, and conjunctiva are superficial structures that can be examined without the need for an ophthalmoscope. Therefore, the correct answer is the optic disc. Choices A, B, and D are incorrect because they are external structures that can be examined directly without the use of an ophthalmoscope.

Correct Answer: D

Rationale: The correct answer is 'Ocular movements.' Moving the eyes through the six cardinal fields of gaze evaluates the function of the eye muscles, such as the medial rectus muscle, superior rectus muscle, superior oblique muscle, lateral rectus muscle, inferior rectus muscle, and inferior oblique muscle. Normal movement in these fields indicates proper ocular movements. Near vision is assessed using a handheld vision screener, central vision with a Snellen chart, and peripheral vision through the confrontation test. Therefore, the evaluation of ocular movements through the six cardinal fields of gaze specifically assesses this aspect of eye function. Choices A, B, and C are incorrect as they pertain to different aspects of vision function that are evaluated using distinct assessment methods, not through the six cardinal fields of gaze.

Correct Answer: B

Rationale: When a nurse observes rapid, involuntary oscillating movements of the eyeball in a client, this is described as nystagmus. Nystagmus appears as a fine oscillating movement, most notable around the iris. It is important to assess for nystagmus when evaluating ocular muscle weakness. Mild nystagmus at extreme lateral gaze is considered normal; nystagmus in any other position is not. Ptosis refers to a drooping of the eyelid, not rapid eye movements. Scleral icterus is the yellowing of the sclera up to the cornea, indicating jaundice, not related to eye movements. Exophthalmos is a noticeable protrusion of the eyeball, typically seen in hyperthyroidism, not associated with rapid oscillating eye movements.

Correct Answer: D

Rationale: The correct answer is Accommodation. Accommodation is the process by which the eye adjusts its focus to see objects at different distances. When the pupils get larger when the client looks at an object in the distance and become smaller when looking at a nearby object, it indicates the normal functioning of the eye's accommodation mechanism. Myopia refers to nearsightedness, where distant objects appear blurry. Hyperopia refers to farsightedness, where close objects appear blurry. Photophobia is an abnormal sensitivity to light. Therefore, the correct term to document the finding of the pupils adjusting based on the distance of the object is 'Accommodation.'