College

Assessment of a patient's visual acuity reveals that:

- The left eye can see at 20 feet what a person with normal vision can see at 40 feet.
- The right eye can see at 20 feet what a person with normal vision can see at 50 feet.

The nurse records which of the following findings as visual acuity?

A. OS 20/40; OD 20/50
B. OU 20/40; OS 50/20
C. OD 20/40; OS 20/50
D. OU 40/20; OD 50/20

Answer :

Final answer:

The visual acuity of the patient's eyes would be recorded as OS 20/40; OD 20/50. This means the patient's left eye (OS) and right eye (OD) can see at 20 feet what a person with normal vision can see at 40 feet and 50 feet respectively.

Explanation:

In the assessment of a patient's visual acuity, the finding that the left eye can see at 20 feet what a normal vision person can see at 40 feet and the right eye can see at 20 feet what a normal vision person can see at 50 feet is recorded as OS 20/40; OD 20/50. These notations represent the standard Snellen chart readings for visual acuity. Here, "OS" stands for "oculus sinister", which is Latin for left eye, and "OD" stands for "oculus dexter", or right eye. The figures 20/40 and 20/50 mean that the patient must be at 20 feet to see what a person with normal vision can see at 40 and 50 feet respectively.

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