Correct Answer: A

Rationale: The correct answer is A: Weber. The Weber test has been found to yield unreliable data recently due to its subjectivity and inconsistency in interpretation. The test involves placing a vibrating tuning fork on the midline of the head to assess lateralization of sound. However, factors like bone conduction and individual perception can influence the results, leading to inaccuracies. Romberg test (B) evaluates balance, Whisper test (C) assesses hearing sensitivity, and Audiometer (D) measures hearing thresholds objectively. These tests are more reliable in providing accurate data compared to the Weber test.

Correct Answer: B

Rationale: The correct answer is B: suspect that the patient has hyperthyroidism. Periorbital edema is a common sign of hyperthyroidism due to the accumulation of fluid in the tissues around the eyes. By suspecting hyperthyroidism, the nurse can further assess for other associated symptoms and recommend appropriate diagnostic tests. Choice A (check for the presence of exophthalmos) is incorrect because exophthalmos refers to bulging eyes, which may be present in hyperthyroidism but is not directly related to periorbital edema. Choice C (ask the patient if he or she has a history of heart failure) is incorrect as periorbital edema is not typically associated with heart failure, which usually presents with generalized edema. Choice D (assess for blepharitis) is incorrect because while blepharitis can cause eyelid inflammation, it is not typically associated with periorbital edema seen in hyper

Correct Answer: D

Rationale: The correct answer is D: migraine headaches. The patient's symptoms of severe throbbing headache in the frontotemporal area, triggered by stress (studying for an exam), partially relieved by lying down, and family history of similar headaches are indicative of migraines. Migraines commonly present with these characteristics, often exacerbated by stress and have a genetic component. A: Hypertension does not typically present with throbbing headaches in a specific area or relief with lying down. B: Cluster headaches are characterized by severe, unilateral headaches around the eye area, not frontotemporal. C: Tension headaches usually present as dull, constant pressure-type headaches, not throbbing, and do not have the familial pattern described by the patient.

Correct Answer: B

Rationale: The correct answer is B, loss of lens elasticity. Presbyopia is the age-related loss of near vision due to the lens becoming less flexible, making it harder to focus on close objects. With aging, the lens loses its ability to change shape, affecting near vision. Other choices are incorrect because presbyopia is primarily related to changes in the lens, not the cornea (A), adaptation to darkness (C), or distance vision abilities (D).

Correct Answer: B

Rationale: The correct answer is B because the image formed on the retina is indeed upside down and reversed from its actual appearance in the outside world due to the way light rays are refracted and focused by the cornea and lens. This phenomenon is known as the inverted retinal image. Choice A is incorrect as visual pathways cross at the optic chiasm, so the right side of the brain interprets vision for the left visual field from both eyes. Choice C is incorrect as light rays are refracted at the cornea and lens, not through the transparent media of the eye before striking the pupil. Choice D is incorrect as light impulses are conducted through the optic nerve to the occipital lobes, not the temporal lobes, where the primary visual cortex is located.