Keystone 1157 instruction manual Test #7 Left Eye Acuity, Test #8 Phoria

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Test #7: Left Eye Acuity

Actual Test

 

 

A

 

B

 

C

1.

20

= 745932

25

= 578236

30

= 346752

2.

40

= 534268

50

= 752386

60

= 6254

3.

70

= 8453

100

= 85

200

= 3

Proceed as on test #5 and #6.

To pass the acuity test, at least five of six characters must be read in Blocks A, Line 2 on each of the tests 5,6, and 7. This is a standard of 20/40 for each eye separately, and both eyes together. This standard corresponds to most State requirements. Business and industry may have more strict requirements which must be considered in establishing a pass/fail standard.

Test #8: Phoria

Actual Test

PHORIA

DOT INSIDE BOX

Ask your subject “Is the red dot inside or outside the yellow box?” If the dot is outside the box, a referral should be made.

(N.B.: Some subjects will see only the red dot or only the yellow box. This indicates they are using only one eye, either because the other is blind or “lazy” or because they have some other kind of “binocular vision problem”. In any case, unless the subject already knows he has such a defect, he/she should be referred for a full examination.)

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Contents Keystone View Contents DVS-V Test Instrument DVS-V Maintenance Elliptech Control Unit Test Guide Test #2 Color Deficiency Test Questions and Referral GuideTest #1 Quick Acuity at 20/40 Level Quick Acuity TestTest #3 & #4 Depth Perception & Sign Recognition Depth / SignsTest #6 Right Eye Acuity Test #5 Binocular Acuity100 200 Test #8 Phoria Test #7 Left Eye AcuityPhoria 85 70 55 Nasal Horizontal Field Testing55 70 Dickerson Road, Reno NV Phone 775 324-2799 800 Fax 775