Which of the following tests is best for the nurse to use to see if a child is color blind?
a. the Ishihara color plates
b. the Snellen E
c. a color matching test designed by the nurse
d. red versus green test of distinguishment
A
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A Correct. The Ishihara color plates are the best test for the nurse to use to see if a child is color blind. Color blindness tends to be inherited as a sex-linked disorder seen more frequently in males. It affects the ability to distinguish red from green or blue from yellow colors. These plates have numbers of a particular color hidden within them. Children who are color blind cannot see the numbers and just see colored dots.
B Incorrect. The Snellen E chart is used to test distance visual acuity in children ages 3 to 6 years. The child indicates which way the legs of the letter E point.
C Incorrect. A color matching test designed by the nurse is not the best test to use to detect color blindness.
D Incorrect. The red versus green test of distinguishment is not the best test to detect color blindness.
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