A client's chart indicates that they are legally blind. Which of the following is the definition of legally blind?
Full vision loss in at least one eye
The best-corrected vision in the better eye of 20/200 or less
Inability to see clearly from 200 feet away without corrective lenses
Bilateral visual impairment of 20/60 or greater
The Correct Answer is B
Choice A Reason: This is incorrect because full vision loss in one eye does not necessarily mean that the person is legally blind. Legal blindness depends on the visual acuity and visual field of both eyes.
Choice B Reason: This is correct because legal blindness is defined by the World Health Organization (WHO) as having a visual acuity of 20/200 or worse in the better eye with the best possible correction, such as glasses or contact lenses. This means that the person can see at 20 feet what a normal person can see at 200 feet.
Choice C Reason: This is incorrect because inability to see clearly from 200 feet away without corrective lenses may indicate nearsightedness or myopia, but not legal blindness. Nearsightedness can be corrected with lenses or surgery.
Choice D Reason: This is incorrect because bilateral visual impairment of 20/60 or greater does not meet the criteria for legal blindness. Visual impairment is defined by WHO as having a visual acuity of less than 20/60 but better than 20/200 in the better eye with the best possible correction.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason: A virus is not detected by the KOH test, which is used to diagnose fungal infections of the skin, hair, or nails. A virus can be detected by other tests, such as polymerase chain reaction (PCR) or viral culture.
Choice B Reason: A fungal infection is detected by the KOH test, which dissolves the skin cells and leaves behind the fungal elements that can be seen under a microscope. A fungal infection can cause symptoms such as itching, scaling, redness, or blisters.
Choice C Reason: A bacterial infection is not detected by the KOH test, which is specific for fungi. A bacterial infection can be detected by other tests, such as gram stain or culture.
Choice D Reason: Cancer is not detected by the KOH test, which is not a screening tool for malignancy. Cancer can be detected by other tests, such as biopsy or imaging.
Correct Answer is D
Explanation
Choice A Reason: Providing written materials and visual aids is not necessary for a client who has hearing at 15 dB, which is considered normal hearing. Normal hearing ranges from 0 to 20 dB, meaning that the person can hear sounds that are as faint as 20 dB or less.
Choice B Reason: Using American Sign Language is not appropriate for a client who has hearing at 15 dB, which is considered normal hearing. American Sign Language is a form of communication that uses hand gestures, facial expressions, and body movements to convey meaning. It is mainly used by people who are deaf or hard of hearing.
Choice C Reason: Shouting at the client from 6 inches away is not advisable for a client who has hearing at 15 dB, which is considered normal hearing. Shouting can be perceived as rude or aggressive, and can damage the hearing of both the speaker and the listener.
Choice D Reason: Speaking to the client in an everyday conversational tone is the best action for a client who has hearing at 15 dB, which is considered normal hearing. Conversational speech ranges from 40 to 60 dB, meaning that the person can hear sounds that are as loud as 60 dB or less.
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