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    Med Surg Proctored ExamQuestion 1
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    Med Surg Proctored Exam

    A nurse performs the Snellen test on a client and obtains these results: Left eye 20/40, Right eye 20/30. What conclusion can the nurse make in regard to the client's vision based on these results?

    Explanation & Rationale

    Visual acuity measures the central vision and clarity of the eye using optotypes. The Snellen chart quantifies refractive errors like myopia or hyperopia. Normal vision is 20/20, representing the distance in feet. Rationale: A. Legal blindness is defined as a corrected visual acuity of 20/200 or worse in the better-seeing eye. The results 20/40 and 20/30 indicate moderate impairment, but they do not meet the strict legal criteria for blindness. B. The right eye result 20/30 is superior to the left eye result 20/40. In Snellen fractions, a smaller denominator indicates that the client sees at 20 feet what a normal eye sees at a closer distance. C. In visual acuity fractions, the denominator represents the distance at which a person with normal vision can read the letters. Therefore, a higher denominator signifies that the client's vision is significantly less sharp than the standard. D. The Snellen test primarily assesses distance vision clarity rather than specific refractive conditions. While the results indicate a deficit, they do not specifically confirm hyperopia or the definitive clinical necessity for corrective lenses without further refraction.

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