This paper investigates the design of an ophthalmic rigid Contact Lens (CL) that has a Q-
type aspheric surface to reduce the tolerance error budget and produce higher visual acuity …

It is shown that the use of basic lenses with aspheric surfaces makes it possible to create
various types of optical systems. Designs are proposed for ophthalmic objectives based on …

Most of optical systems are axially symmetric. But axially asymmetric systems are necessary
in some cases, for example, to avoid the vignetting of a mirror surface, or to eliminate the …

Purpose. To outline the methods of calculating irregular astigmatism and wavefront
aberration of the cornea and report the results that have been obtained with these …

Two types of fisheye lenses for automobile navigation are designed with slope-constrained
Q-type aspheres. Special requirements have been considered in the design process, and Q …

Abstract Background & Purpose Implantation of an artificial intraocular lens (IOL) during
cataract surgery significantly changes the balance of aberrations in the eye. We demonstrate …

We present two techniques to improve as-built miniature lenses that are defined with high-
order aspheric surfaces without losing optical quality and without significantly modifying the …

Using raytracing method (ZEMAX program), the reduction of SA of the whole human eye
may be reduced via the combined effects of asphericity (Q) and the ratio of the front and …

Purpose: To evaluate whether the average spherical aberration of human astigmatic
corneas is statistically equivalent to human nonastigmatic corneas. Methods: Spherical …

It is important to assess aspheric rigid contact lenses not only for fit, but also for optical
performance. Using ray tracing techniques, on-eye total longitudinal aberration induced by …