Comparison of Manual Refraction Versus Autorefraction
in 60 Diabetic Retinopathy Patients.
is less common during a domiciliary sight test and a retinoscope is most commonly used for objective assessment.
was performed using an Auto Ref-Keratometer (HRK-7000A; HUVITZ Co.
was performed on auto refractometer (Topcon KR 8900) on all subjects with VA below 20/30 in one or both eyes.
After at least 30 minutes, postcycloplegic autorefraction
with a kerato-refractometer (Topcon KR-8900 by Topcon Europe Medical B.V., Capelle a/d Ijssel, The Netherlands) was performed by an optometrist with at least 5 years of experience with pediatric assessment.
The OPD Scan II (Nidek, Japan) is a device that gives information about corneal topography, wavefront, autorefraction
, keratometry, and pupillometry, all in one instrument.
Evaluation included a dilated ophthalmoscopic exam to detect DR, early and advanced AMD, and optic nerve cupping due to glaucoma; and autorefraction
to detect URE at published sensitivities and specificities (Moss et al.
(20) Given the controlled nature of the study, these preliminary results warrant additional research but seem to support autorefraction
as a possible screening mechanism that nurses and laypeople can use to identify children in a preschool setting.
For the 1999-2000, 2001-2002, and 2003-2004 surveys, participants also were asked questions regarding vision function, and the physical examination included a vision examination in which visual acuity was measured before and after an objective autorefraction
test (optical correction measured by all autorefractor).
A detailed history was followed by a detailed examination using autorefraction
, Snellen's chart, slit lamp and 90D lens for fundoscopy.