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.
© 2003 Optical Society of America
[Optical Society of America ]
Kodikullam V. Avudainayagam and Chitralekha S. Avudainayagam, "Holographic multivergence target for subjective measurement of the spherical power error of the human eye," Opt. Lett. 28, 123-125 (2003)