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MatroZZZ [7]
3 years ago
7

Phoebie brags to her boy-friend that she scored a "twenty twenty" at the eye doctorâs office today. The boy-friend tells her how

proud he is of her, although he doesnât really know what that means. Phoebie is technically referring to her performance on the __________ eye chart.
A. Von Helmholtz
B. Ishihara
C. Snellen
D. Colavita

Social Studies
1 answer:
zloy xaker [14]3 years ago
4 0

Answer: C - Snellen

Explanation: A Snellen eye chart is used to measure visual acuity. This chart was developed in 1862 by a Dutch ophthalmologist Herman Snellen.

This chart uses alphanumeric capitals in its 5 by 5 unit grid. An example of the chart is attached.

The  Snellen eye chart helps to determine the clarity of one's distance vision and it also helps to determine the legal visual acuity requirement for a valid driver’s license.

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Before the end of WWII in 1945 most of European countries were in constant wars with their neighbors. This was detrimental for the entire region because the fighting hampered efforts to develop a sustained economic growth. Due to these circumstances, the European Union was born to finally put an end to the endless wars among countries.

Around the 1950s, countries which were producing coal and steel in Europe, decided that in order to continue with the success of the two industries, it was necessary to unite European countries. Thanks to their efforts, the European Union was born.  

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