Ch. 21 - Vision and Eye Disorders Flashcard

Front

What term describes the ability of the eye to focus light rays precisely onto the retina?

Back

Refraction

Front

A patient reports difficulty seeing objects at a distance but has no trouble reading up close. Which condition does this most likely indicate?

Back

Myopia

Front

Age-related loss of elasticity in the lens that makes close vision difficult is called:

Back

Presbyopia

Front

A patient is tested with the Snellen chart and achieves a visual acuity of 20/60. How should this be interpreted?

Back

The patient sees at 20 feet what a person with normal vision sees at 60 feet

Front

When assessing near vision with a Jaeger or near-vision card, the patient should hold the card:

Back

14–16 inches from the eyes

Front

During an eye irrigation, the solution should flow:

Back

From the inner canthus outward

Front

Which of the following is an incorrect technique for administering eye drops? Analyze the steps and select the one that could potentially cause harm or reduce the effectiveness of the medication: Asking the patient to look upward, Ensuring the medication label says “ophthalmic”, Placing drops directly on the cornea, Asking the patient to close and roll the eye afterward.

Back

Placing drops directly on the cornea

Front

What is the function of cerumen in the ear canal? Options: Equalizes middle ear pressure, Helps transmit sound waves, Protects and lubricates the ear canal, Enhances sensitivity to low-frequency sounds

Back

Protects and lubricates the ear canal

Front

Given the importance of frequency ranges in hearing tests, which range encompasses normal human speech and is most critical for assessing hearing ability?

Back

300–4,000 Hz

Front

Sensorineural hearing loss can have multiple causes. Using your knowledge of auditory system pathology, identify which of the following is most likely to result in sensorineural hearing loss: Impacted cerumen, Otitis media, Intense noise exposure, Perforated tympanic membrane.

Back

Intense noise exposure