An evaluation of Bennett's method for determining the equivalent powers of the eye and its crystalline lens without resort to phakometry.
Refraction and optical components have been measured in 36 eyes using objective optometry, keratometry, ophthalmophakometry and A-scan ultrasonography. A computing scheme was used to confirm that the accumulated experimental errors for a phakometric technique tend to exceed the inherent errors of a new method which calculates the equivalent powers of the eye and its crystalline lens without resort to phakometry. Bennett's method was shown to be a valuable technique in biometric studies which obviates the need for lengthy experimental investigations.
Dunne
M C
MC
Department of Vision Sciences, Aston University, Birmingham, UK.
Barnes
D A
DA
Royston
J M
JM
D000328:Adult; D000886:Anthropometry; D003315:Cornea / Q000503:physiopathology; D005260:Female; D006801:Humans; D007908:Lens, Crystalline / Q000503:physiopathology*; D008297:Male; D008722:Methods; D055095:Optics and Photonics; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000503:physiopathology*