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¿.<br />
RESUTTS<br />
30<br />
Data Clean<strong>in</strong>g 30<br />
Description <strong>of</strong> anthropometric and associated variabres 31<br />
Àssociation <strong>of</strong> Socio-Economic and HeaIth Variables With<br />
Ànthropometric Indicators . 38<br />
5.<br />
6.<br />
DI SCUSSi ON<br />
CONCTUSION<br />
48<br />
54<br />
PÀRT II -- Modification <strong>of</strong> Thornton's (977 ) ¡ark Adaptation Test and<br />
Measure<strong>ment</strong> <strong>of</strong> Dark Adaptation<br />
Chapter<br />
pêqe<br />
7. INTRODUCTION 58<br />
8. REVIEW OF TITERATURE 60<br />
a<br />
Biochemical and Physiological Basis <strong>of</strong> Ðark Àdaptation<br />
Test i ng<br />
Dark Àdaptation Test<strong>in</strong>g<br />
The Classical Dark Adaptation Test<br />
Rapid Dark Àdaptation Test (np¡r)<br />
Use <strong>of</strong> Dark Adaptation Tests for Àdults<br />
Rapid Dark Àdaptation Test for use with children<br />
MÀTERIÀLS AND METHODS<br />
60<br />
63<br />
63<br />
66<br />
67<br />
71<br />
76<br />
Hypo<strong>the</strong>ses . 76<br />
Design , 76<br />
Procedures or Methods 79<br />
Experi<strong>ment</strong> I . 79<br />
Experi<strong>ment</strong> Ii<br />
Experi<strong>ment</strong> III<br />
Experi<strong>ment</strong> IV<br />
10. RESULTS ÀND DISCUSSION<br />
'84<br />
g0<br />
g2<br />
g2<br />
Experi<strong>ment</strong> I: Comparison <strong>of</strong> <strong>the</strong> Rapid Dark Adaptation<br />
Test (Thornton, 1977 ) and a '1O-Second fest<br />
The Rapid Dark Àdaptation Test (Thornton , 1977 RDAT)<br />
The 1 0-Second Test<br />
Experi<strong>ment</strong> II: Application <strong>of</strong> <strong>the</strong> Multiple Ðecision<br />
Procedure <strong>in</strong> adult subjects.<br />
Experi<strong>ment</strong> III: Application <strong>of</strong> Thornton's Rapid Dark<br />
Àdaptation Test and <strong>the</strong> 1O-Second Test to 7-10<br />
Year-old Children<br />
Experi<strong>ment</strong> IV: Àpplication <strong>of</strong> a 1O-Second Test <strong>in</strong><br />
children under <strong>the</strong> age <strong>of</strong> five<br />
84<br />
84<br />
89<br />
93<br />
96<br />
'1<br />
01<br />
11, coNcrusr0N . 104<br />
PÀRTI-BIBIIOGRAPHY..<br />
-ix-<br />
.c 107