The nurse educator asks the student nurse to explain the most common causes of blindness in the United States. Which of the following options will the student nurse select as one of the top causes of blindness?

Choice A Reason: This is incorrect because nystagmus is not a response to stimuli, but a condition that causes involuntary eye movements. Nystagmus can be caused by various factors, such as inner ear disorders, brain lesions, or drug toxicity, but not necessarily by cervical spine injury.

Choice B Reason: This is incorrect because decorticate positioning is a response to stimuli that indicates damage to the cerebral cortex or the corticospinal tract. Decorticate positioning is characterized by flexion of the arms and extension of the legs. It does not indicate cervical spine injury, which affects the spinal cord below the brainstem.

Choice C Reason: This is incorrect because lack of any response to stimuli can indicate various levels of brain damage or coma, but not specifically cervical spine injury. Lack of any response can also be influenced by other factors, such as sedation, hypothermia, or shock.

Choice D Reason: This is correct because decerebrate positioning is a response to stimuli that indicates damage to the brainstem or the upper cervical spine. Decerebrate positioning is characterized by extension and outward rotation of the arms and legs. It indicates a severe and life-threatening injury that can impair vital functions, such as breathing and blood pressure.

Choice A reason: This is incorrect because this comment does not require reporting to the client's provider. It is normal to have reduced vision and an increased risk of falling with a patch on one eye after cataract surgery. The nurse should reassure the client, provide assistance with mobility, and educate the client on safety measures.

Choice B reason: This is incorrect because this comment does not require reporting to the client's provider. It is normal to have some itching and discomfort in the eye after cataract surgery. The nurse should commend the client for not rubbing the eye, as this can cause infection or damage to the surgical site. The nurse should also administer anti-inflammatory eye drops as prescribed and instruct the client on how to apply them.

Choice C reason: This is incorrect because this comment does not require reporting to the client's provider. It is normal to have increased sensitivity to light in the eye after cataract surgery. The nurse should dim the lights in the room, provide sunglasses or a shield for the eye, and educate the client on how to protect the eye from bright light.

Choice D reason: This is the correct answer because this comment requires reporting to the client's provider. Severe pain in the eye after cataract surgery can indicate a complication such as infection, inflammation, bleeding, or increased intraocular pressure. The nurse should assess the eye for signs of redness, swelling, discharge, or bleeding, and report the findings and the pain level to the provider. The nurse should also administer analgesics as prescribed and monitor the pain relief.