TY - JOUR
T1 - Continuous recording of accommodation and pupil size using the Shin-Nippon SRW-5000 autorefractor
AU - Wolffsohn, J.S.
AU - Gilmartin, B.
AU - Mallen, E.A.H.
AU - Tsujimura, S.
PY - 2001/3
Y1 - 2001/3
N2 - A newly released commercial autorefractor, the Shin-Nippon SRW-5000 (Japan), has been found to be valid compared to subjective refraction and repeatable over a wide prescription range. Its binocular open field-of-view allows the accommodative state to be monitored while a natural environment is viewed. In conventional static mode, the device can take up to 45 readings in 1min using digital image analysis of the reflected retinal image of a measurement ring. Continuous on-line analysis of the ring provides high (up to 60Hz) temporal resolution of the refractive state to an accuracy of <0.001D. Pupil size can also be analysed to a resolution of <0.001mm. The measurement of accommodation and pupil size was relatively unaffected by eccentricity of viewing up to ±10° and instrument focusing inaccuracies of ±5mm. The resolution properties of the analysis are shown to be ideal for measurement of dynamic accommodation and pupil responses. Copyright © 2001 The College of Optometrists.
AB - A newly released commercial autorefractor, the Shin-Nippon SRW-5000 (Japan), has been found to be valid compared to subjective refraction and repeatable over a wide prescription range. Its binocular open field-of-view allows the accommodative state to be monitored while a natural environment is viewed. In conventional static mode, the device can take up to 45 readings in 1min using digital image analysis of the reflected retinal image of a measurement ring. Continuous on-line analysis of the ring provides high (up to 60Hz) temporal resolution of the refractive state to an accuracy of <0.001D. Pupil size can also be analysed to a resolution of <0.001mm. The measurement of accommodation and pupil size was relatively unaffected by eccentricity of viewing up to ±10° and instrument focusing inaccuracies of ±5mm. The resolution properties of the analysis are shown to be ideal for measurement of dynamic accommodation and pupil responses. Copyright © 2001 The College of Optometrists.
UR - http://www.scopus.com/inward/record.url?scp=0035153922&partnerID=8YFLogxK
UR - http://onlinelibrary.wiley.com/doi/10.1046/j.1475-1313.2001.00586.x/abstract
U2 - 10.1046/j.1475-1313.2001.00586.x
DO - 10.1046/j.1475-1313.2001.00586.x
M3 - Article
C2 - 11261344
SN - 0275-5408
VL - 21
SP - 108
EP - 113
JO - Ophthalmic and Physiological Optics
JF - Ophthalmic and Physiological Optics
IS - 2
ER -