Holographic multivergence target for subjective measurement of the spherical power error of the human eye.
We have fabricated a single hologram with which to determine the spherical refractive error of the human eye in the range 5 to -2.5 diopters (D) with an accuracy of +/-0.25 D in a single step. The amplitude of accommodation is determined at the same time. The hologram is a record of 16 targets, each of which has a different image vergence in the range 5 to -2.5 D in steps of 0.5 D. This idea can be applied readily to any dioptric range. The measurement method is simple, fast, and reliable.
Avudainayagam
Kodikullam V
KV
Centre for Eye Research, School of Optometry, Queensland University of Technology, Kelvin Grove, Queensland 4059, Australia. k.avudainayagam@qut.edu.au
Avudainayagam
Chitralekha S
CS
D003198:Computer Simulation; D004867:Equipment Design; D006696:Holography / Q000295:instrumentation / Q000379:methods* / Q000592:standards; D006801:Humans; D008962:Models, Theoretical; D012030:Refractive Errors / Q000175:diagnosis*