A Hartmann-Shack sensor was used to measure the wavefront slopes across the pupil. From the measured wavefront slopes, the wavefront was then reconstructed using a least-squares fit with Zernike ...

In 22 eyes of 14 patients with keratoconus (age 30.5±8.4 years, means±SD) and 26 eyes of 13 normal controls (age 29.2±6.7 years), ocular higher-order wavefront aberration for a 6-mm pupil was measured ...

Entangled photon pairs, also known as biphotons, are widely used in quantum optical techniques. Quantum imaging enables several nonclassical imaging features. In particular, biphotons with a strong ...