Technical note: apparatus for comparison of progressive addition spectacle lenses.
Apparatus is described for the measurement of lens power distribution across the surface of a progressive addition spectacle lens. Although the method used is different to that specified in BS 2738-7:1996, the measurements are nevertheless comparable, and are considered sufficiently accurate for making basic comparisons of lens type.
Fowler
C W
CW
School of Life and Health Sciences, Aston University, Birmingham B4 7ET, UK. c.w.fowler@aston.ac.uk
D001251:Astigmatism / Q000534:rehabilitation; D004867:Equipment Design; D005139:Eyeglasses; D006801:Humans; D009907:Optometry / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results