A nurse is caring for a client who reports a decrease in central vision. The nurse should identify that this is a manifestation of which of the following visual impairments?
Macular degeneration
Glaucoma
Diabetic retinopathy
Cataract
The Correct Answer is A
Choice A Reason: This is correct because macular degeneration is a condition that affects the macula, which is the central part of the retina that is responsible for sharp and detailed vision. Macular degeneration can cause blurred or distorted central vision, difficulty reading or recognizing faces, or dark spots in the visual field.
Choice B Reason: This is incorrect because glaucoma is a condition that affects the optic nerve, which is the nerve that connects the eye to the brain and carries visual signals. Glaucoma can cause increased pressure inside the eye, damage to the optic nerve, and loss of peripheral vision.
Choice C Reason: This is incorrect because diabetic retinopathy is a condition that affects the blood vessels in the retina, which is the layer of tissue at the back of the eye that converts light into nerve impulses. Diabetic retinopathy can cause bleeding, swelling, or leakage of fluid in the retina, and loss of vision in any part of the visual field.
Choice D Reason: This is incorrect because cataract is a condition that affects the lens, which is the transparent structure behind the pupil that focuses light onto the retina. Cataract can cause clouding or opacity of the lens, and reduced vision in all parts of the visual field.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: This is the correct answer because atrial fibrillation is the risk factor that puts the client at
the highest risk for embolic stroke. Atrial fibrillation is an irregular and rapid heart rate that causes poor blood flow and blood pooling in the heart chambers. This can lead to the formation of blood clots that can travel to the brain and block an artery, causing an embolic stroke.
Choice B reason: This is incorrect because hypertension is not the risk factor that puts the client at
the highest risk for embolic stroke. Hypertension is high blood pressure that puts stress on the blood vessels and increases the risk of bleeding or rupture. This can lead to a hemorrhagic stroke, but not an embolic stroke.
Choice C reason: This is incorrect because diabetes is not the risk factor that puts the client at
the highest risk for embolic stroke. Diabetes is a condition that causes high blood sugar levels and damages the blood vessels and nerves. This can lead to poor circulation and increased risk of infection and ulcers, but not an embolic stroke.
Choice D reason: This is incorrect because alcohol abuse is not the risk factor that puts the client at
the highest risk for embolic stroke. Alcohol abuse is excessive consumption of alcohol that affects liver function and blood clotting factors. This can lead to liver disease and bleeding disorders, but not an embolic stroke.
Correct Answer is D
Explanation
Choice A Reason: Head trauma is not one of the top causes of blindness in the United States, but rather a possible cause of it. Head trauma can damage the optic nerve, retina, or brain, leading to vision loss or impairment.
Choice B Reason: Cardiovascular disease is not one of the top causes of blindness in the United States, but rather a risk factor for it. Cardiovascular disease can affect the blood supply and oxygen delivery to the eyes, leading to conditions such as glaucoma, macular degeneration, or retinal vein occlusion.
Choice C Reason: Syphilis is not one of the top causes of blindness in the United States, but rather a rare cause of it. Syphilis is a sexually transmitted infection that can affect the eyes, leading to inflammation, scarring, or detachment of the retina.
Choice D Reason: This is the correct choice. Diabetic retinopathy is one of the top causes of blindness in the United States, affecting about 4.1 million adults. Diabetic retinopathy is a complication of diabetes that damages the blood vessels in the retina, leading to bleeding, swelling, or leakage of fluid. It can cause blurred vision, floaters, or blindness if left untreated.
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