Purpose This report uses the principles of geometrical optics to compute the optical point‐
spread function (PSF) from the wavefront error function. Method Step 1 uses Prentice's rule …

Objective: The visual effects of wearing a photochromic contact lens (test) were directly
compared with a nonphotochromic contact lens (control). Positive dysphotopsia (halos …

Monocular polyplopia (ghost or multiple images) is a serious visual impediment for some
people who report seeing two (diplopia), three (triplopia) or even more images. Polyplopia is …

Purpose One common complaint with natural opacified lenses is the deleterious effects of
higher-order ocular aberrations and intraocular scatter, such as halos and starbursts, which …

The patterns observed by people when they look at stars are collectively called starbursts.
Similar patterns are observed when viewing any distant object with sufficiently large pupils …

Multifocal and/or extended depth-of-focus designs are widely used in many optical
applications. In most of them, the optical configuration has axial symmetry. A usual design …

Intraocular scatter, with its associated functional manifestations, is a leading cause of
automotive accidents and a significant biomarker of covert and overt ocular disease (eg …

Fuzziness or blur in images deserves critical attention as a subject and resource in scientific
research practices and clinical interventions. I discuss how the project of engaging blur in …

A system is developed for simulating the image quality and dysphotopsia of multifocal
lenses. To achieve this, the simulation modifies a High Dynamic Range (HDR) photograph …

When looking at a star under low-light conditions, most people perceive some structured
symmetric patterns, which have been called starbursts. Starburst patterns can be very …