Keystone Projector 1157 User Manual download pdf (Page 9)

Test #5 Binocular Acuity

Actual Test

A B C

20 = 857432 25 = 674235 30 = 382457

40 = 563472 50 = 859423 60 = 8927

70 = 2978 100 = 43 200 = 9

A B C

20 = 547638 25 = 428576 30 = 943852

40 = 795823 50 = 357248 60 = 7236

70 = 9574 100 = 92 200 = 5

Note: Double Check the day/nite switch for desired position.

Ask your subject to read the first block of characters, Column A. If they are read correctly, he/she has 20/20

acuity, and they need not read any further. Five of six characters must be read. Continue across each row,

from left to right until your test subject reads the characters in a block successfully.

The above table indicates the acuity level associated with the corresponding test characters: 20/20, 20/25,

20/30, etc… For example, in Row 1, Column B, “25” indicates that the acuity level tested here is 20/25.

Actual Test

Proceed in the same fashion as test #5. Be sure to instruct the subject to keep both eyes open at all times.

He/she may report that no characters are seen, in which case a visual suppression is evident and should be

referred for a full professional eye examination.

Test #6 Right Eye Acuity

1 2 3 4 5 6 7 8 9 10 11 12

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Keystone Projector 1157 User Manual Page 9