VIEWS FOR 20/20 by Dr. Mark Skowron ABERRANT BEHAVIOR If you have ever looked through optical lenses and noticed colored halos around lights, you have an idea of what "chromatic aberration" is. This distortion is caused by the lenses' inability to focus all colors onto the same focal point. Eyeglass wearers can best avail themselves of this information by referring to the "Abbe value" (or number) of a lens material. Named after the German physicist who defined it, Ernst Abbe, this number is a measure of how broadly the lens disperses different wavelengths of light as light passes through it. Lens materials with a low Abbe value have high dispersion (causing noticeable chromatic aberration), while those with low Abbe numbers will display less chromatic aberration. No matter what your eye condition, or how you choose to view the world, there are now prescription lenses that meet your unique lifestyle and vision correction needs. Eyeglass lenses that change as the light changes, from clear indoors to dark outdoors. Bifocal lenses that provide multiple fields of vision. High-index lenses that are thinner and lighter than ever before. For all your eyewear needs, please stop by SKOWRON EYE CARE. affordable eye care. At Skowron Eye Care, your 20/20 vision is our mission. P.S. Abbe values for eyeglass lens materials range from 59 (glass) to 30 (polycarbonate). SKOWRON EYE CARE 370 N. York, Elmhurst, IL 60126 630-834-6244 www.skowroneyecare.com VIEWS FOR 20/20 by Dr. Mark Skowron ABERRANT BEHAVIOR If you have ever looked through optical lenses and noticed colored halos around lights, you have an idea of what "chromatic aberration" is. This distortion is caused by the lenses' inability to focus all colors onto the same focal point. Eyeglass wearers can best avail themselves of this information by referring to the "Abbe value" (or number) of a lens material. Named after the German physicist who defined it, Ernst Abbe, this number is a measure of how broadly the lens disperses different wavelengths of light as light passes through it. Lens materials with a low Abbe value have high dispersion (causing noticeable chromatic aberration), while those with low Abbe numbers will display less chromatic aberration. No matter what your eye condition, or how you choose to view the world, there are now prescription lenses that meet your unique lifestyle and vision correction needs. Eyeglass lenses that change as the light changes, from clear indoors to dark outdoors. Bifocal lenses that provide multiple fields of vision. High-index lenses that are thinner and lighter than ever before. For all your eyewear needs, please stop by SKOWRON EYE CARE. affordable eye care. At Skowron Eye Care, your 20/20 vision is our mission. P.S. Abbe values for eyeglass lens materials range from 59 (glass) to 30 (polycarbonate). SKOWRON EYE CARE 370 N. York, Elmhurst, IL 60126 630-834-6244 www.skowroneyecare.com