[Primary application and evaluation of a technology for objective measurement of accommodation of human eyes].
OBJECTIVE
To evaluate the practical value of a new technology for objective measurement of accommodation of human eyes.


METHODS
It was a comparative study of some techniques for measuring the accommodation of human eyes. Twenty-six outpatients (20 male, 6 female, 10-37 years old) that were suspected to be abnormal in accommodation were examined with Nidek ARK-730 (with software AA-1 inside). The measurement results from the instrument were compared by Kappa test with the clinical impression and comprehensive impression based on measurement results and clinical information.


RESULTS
The abnormality rate of accommodation of the patients were 61.5%, 46.2%, 61.5% from the instrument, clinical impression and comprehensive impression respectively. The agreement was weak with Kappa value 0.244 between results from the instrument and clinical impression. The agreement was mild with Kappa value 0.513 between results from the instrument and comprehensive impression. The agreement was high with Kappa value 0.698 between results from clinical impression and comprehensive impression.


CONCLUSIONS
The new technology is a progress and complementary to the traditional technology for accommodation examination. With the help of the new technology, some complicated patients could be diagnosed. The diagnose procedure of the instrument remains to be improved. The comprehensive impression based on measurement results and clinical information has more practical value.
Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China. little-bill@263.net
Xiao-bing
XB
Wang
Shi-qiang
SQ
Zhao
Meng
M
Lü
Ai-zhen
AZ
Liu
D000065:Accommodation, Ocular; D000293:Adolescent; D000328:Adult; D001248:Asthenopia / Q000175:diagnosis*; D002648:Child; D003941:Diagnostic Techniques, Ophthalmological; D005260:Female; D006801:Humans; D008297:Male; D055815:Young Adult