Which of the following best describes Hyperopia?
Loss of vision in one eye
Clear vision of nearby objects, but difficulty seeing distant objects
Clear vision of distant objects, but difficulty seeing nearby objects
Blurry vision of both distant and nearby objects
The Correct Answer is C
A) Loss of vision in one eye:
Loss of vision in one eye is not related to hyperopia (farsightedness). This condition could be due to various other causes such as retinal detachment, optic neuropathy, or trauma, but it does not describe the refractive error associated with hyperopia.
B) Clear vision of nearby objects, but difficulty seeing distant objects:
This description pertains to myopia (nearsightedness), where individuals can see nearby objects clearly but struggle with seeing distant objects. Hyperopia is the opposite, involving difficulty with near vision rather than distance vision.
C) Clear vision of distant objects, but difficulty seeing nearby objects:
Hyperopia, or farsightedness, is characterized by clear vision of distant objects while nearby objects appear blurry. This occurs because the eye's light focuses behind the retina rather than directly on it, making close-up tasks like reading challenging.
D) Blurry vision of both distant and nearby objects:
Blurry vision of both distant and nearby objects is not specific to hyperopia and may indicate other eye conditions such as astigmatism or severe refractive errors that affect overall visual acuity, rather than the specific issue of near vision seen in hyperopia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A) Blockage of the tear ducts causing excessive tearing:
Blockage of tear ducts (dacryostenosis) results in excessive tearing (epiphora) due to inadequate drainage of tears into the nasal cavity. It does not directly contribute to glaucoma, which primarily involves increased intraocular pressure (IOP) and optic nerve damage.
B) Inflammation of the cornea resulting in blurry vision:
Corneal inflammation (keratitis) can cause blurry vision, pain, and sensitivity to light, but it is not the primary pathophysiology of glaucoma. Glaucoma primarily involves damage to the optic nerve due to elevated IOP.
C) Increased intraocular pressure (IOP) leading to optic nerve damage:
Glaucoma is characterized by elevated IOP, which puts pressure on the optic nerve and can lead to progressive damage and vision loss if untreated. This is the primary pathophysiological process in most types of glaucoma.
D) Degeneration of the lens leading to cataracts:
Cataracts involve the clouding of the lens of the eye, leading to visual impairment. While cataracts are a common condition in older adults, they are not directly related to the pathophysiology of glaucoma, which primarily involves elevated IOP and optic nerve damage.
Correct Answer is C
Explanation
(a) Mydriasis:
While mydriasis (dilated pupil) can be associated with cranial nerve III damage, it does not fully describe the range of symptoms expected with oculomotor paralysis. Cranial nerve III controls more functions than pupil dilation, such as eyelid elevation and certain eye movements.
(b) Normal eye movement:
Cranial nerve III paralysis would result in abnormal eye movement due to the loss of control over muscles responsible for moving the eye. Expecting normal eye movement would be incorrect since the paralysis affects the eye's ability to move properly.
(c) Ptosis will be evident and no pupillary constriction:
Cranial nerve III (oculomotor nerve) paralysis leads to ptosis (drooping eyelid) because it innervates the levator palpebrae superioris muscle. It also affects the pupillary constrictor muscles, resulting in a dilated pupil (lack of pupillary constriction), making this the most comprehensive and accurate answer.
(d) The eye cannot look to the outside side:
Inability to look to the outside (lateral movement) is typically associated with cranial nerve VI (abducens nerve) paralysis, which controls the lateral rectus muscle. Cranial nerve III primarily affects vertical and medial movements, so this is not the expected finding.
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