TY - JOUR
T1 - Accuracy of the Nidek ARK-900 objective refractor in comparison with retinoscopy in children ages 3 to 18 years
AU - Wood, Mark G.
AU - Mazow, Malcolm L.
AU - Prager, Thomas
N1 - Funding Information:
This research was supported in part by an unrestricted research grant from Research to Prevent Blindness, Inc, New York, New York. Original Articles
PY - 1998/7
Y1 - 1998/7
N2 - PURPOSE: To compare the increased speed and accuracy of the Nidek ARK- 900 objective refractor with standard retinoscopy. METHODS: In a prospective study, 100 children aged 3 to 18 years were refracted after cycloplegia. Visual acuity measurements were determined in randomized fashion with the Nidek objective refractor, by retinoscopy, and by subjective refraction. One eye from each patient was included in the study. RESULTS: Ninety-six percent of the children read the 20/30 line perfectly with the result from the objective refractor compared to 88% with retinoscopy. The mean ± SD visual acuity value obtained with the objective refractor was 20/24 ± 4.75 and with retinoscopy was 20/27 ± 6.8, a significant difference (paired t value = 4.81, P < .001). CONCLUSION: The Nidek ARK-900, representing the third generation of objective refractors, is comparable or superior to retinoscopy in accuracy in children, can be easily run by an ophthalmic technician, and therefore eliminates the physician's examination time required for retinoscopy.
AB - PURPOSE: To compare the increased speed and accuracy of the Nidek ARK- 900 objective refractor with standard retinoscopy. METHODS: In a prospective study, 100 children aged 3 to 18 years were refracted after cycloplegia. Visual acuity measurements were determined in randomized fashion with the Nidek objective refractor, by retinoscopy, and by subjective refraction. One eye from each patient was included in the study. RESULTS: Ninety-six percent of the children read the 20/30 line perfectly with the result from the objective refractor compared to 88% with retinoscopy. The mean ± SD visual acuity value obtained with the objective refractor was 20/24 ± 4.75 and with retinoscopy was 20/27 ± 6.8, a significant difference (paired t value = 4.81, P < .001). CONCLUSION: The Nidek ARK-900, representing the third generation of objective refractors, is comparable or superior to retinoscopy in accuracy in children, can be easily run by an ophthalmic technician, and therefore eliminates the physician's examination time required for retinoscopy.
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U2 - 10.1016/S0002-9394(98)00070-1
DO - 10.1016/S0002-9394(98)00070-1
M3 - Article
C2 - 9683155
AN - SCOPUS:0031822357
SN - 0002-9394
VL - 126
SP - 100
EP - 108
JO - American Journal of Ophthalmology
JF - American Journal of Ophthalmology
IS - 1
ER -