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Approximate Functional Visual Acuity for Different Sizes of Objects and Distances

Distance from the Child

Size of the object

2 feet

4 feet

6 feet

8 feet

20 feet

1 inch

20/200

20/100

20/67

20/50

20/20

1 inch

20/400

20/200

20/133

20/100

20/40

1 inch

20/600

20/300

20/200

20/150

20/60

1 inch

20/800

20/400

20/267

20/200

20/80

Acknowledgments

Topor, I. (2004). Approximate functional visual acuity for different sizes of objects and distances. Chapel Hill, NC: Early Intervention Training Center for Infants and Toddlers With Visual Impairments, FPG Child Development Institute, UNC-CH.

Visual Conditions Module 06/06/04

S4 Handout H

EIVI-FPG Child Development Institute

UNC-CH

http://www.fpg.unc.edu/~edin/