Ⅰ INTRODUCTION 1
Ⅱ MATERIALS AND METHODS:background and description 4
Page 6．Picture caption should read＂Allen Picture Cards＂ 7
Page 7．Picture caption should read＂Osterberg Chart＂ 8
Page 15．Line 10，right column，should read 8
＂project at 962 Parker Street＂ 9
Dominance 11
Color 12
Questionnaire 12
Ⅲ THE SUBJESTS 14
Ⅳ OPERATING PROCEDURES 17
Ⅴ FINDINGS 19
Testability and nontestability on individual tests 19
Visual acuity-＂Stycar＂ 20
Visual Acuity-Naming pictures and toys 22
Visual Acuity-Indicating directions 24
Visual Acuity-Eliciting OKN 26
Muscle Balance 27
Performance 29
Dominance 32
Color 34
Findings on Questionnaire 34
Composite Test Findings：Testability and Nontestability 36
Visual Acuity 36
Muscle Balance 39
Performance 39
Dominance 40
Color 40
Composite Test Findings：Passing and Failing 42
Visual Acuity＂Stycar＂ 42
Visual Acuity-Naming pictures and toys 45
Visual Acuity-Indicating directions 45
Visual Acuity-Eliciting OKN 45
Muscle Balance 46
Performance 46
Dominance 46
Color 46
Questionnaire 47
Ⅵ．FOLLOWUP OF SUBOPTIMAL FINDINGS 48
Children Recommended for Followup 48
Retests 51
Ⅶ．DISCUSSION 55
Tests 55
Visual Acuity-＂Stycar＂ 55
Visual Acuity-Naming pictures and toys 57
Visual Acuity-Indicating directions 57
Visual Acuity-Eliciting OKN 58
Muscle Balance 58
Performance 59
Dominance 60
Color 61
Questionnaire 61
Referrals 62
Ⅷ．CONCLUSIONS AND RECOMMENDATIONS 64
Possible Program for Immediiate Use 64
Age of children to be screened 64
Tests 64
Place 64
Major Problems of Preschool Vision Screening Programs 65
Tests 65
Followup 65
Areas for Further Investigation 65
Objective vision tests 65
Normal visual development 65
Current preschool screening programs 66