Ocular coma and spherical aberration increase with age as a result of increased corneal coma and changes in the spherical aberration of the internal optics, according to a study. The “perfect” ...

Aspheric IOL implantation markedly reduced spherical aberration and vertical coma, but the decrease in aberrations may have correlated with an undesirable reduction in depth of focus. “The results in ...

ABSTRACT.Axially symmetric telescopes produce well-known Seidel off-axis third-order aberration patterns: coma, astigmatism, curvature of field, and distortion. When axial symmetry is broken by the ...

The effectiveness of laser in situ keratomileusis (LASIK) to correct both myopia and hyperopia is well documented in the literature, and patient satisfaction with this procedure remains high. There ...

* lateral coma, a so-called high-order aberration that is caused by the line of sight not being along the axis of symmetry of the eye and produces comet-shaped images of points of light; and * ...

October 26, 2011 (Orlando, Florida) — The association with higher values when vertical and horizontal comas aberrations are combined has been underscored in a study reported here at the American ...

The newest imaging spectrograph from Princeton Instruments, the IsoPlane SCT-320, will be unveiled at the Spring 2012 CLEO show in San Jose on Tuesday, May 8. The IsoPlane™ (patent pending) features a ...

One of the oldest problems in optics has been solved. Rafael Gonzalez from Mexico's Tecnologico de Monterrey has come up with an almost comically dense equation that can be used to almost completely ...