Johns Hopkins University, Baltimore, MD. Concise review of the essential information of optics and refraction, for ophthalmology students preparing for course exams. Presented in a question & answer format. Softcover.

Clean your fine jewelry, eyeglasses, dentures, electric shaver heads, CD’s, DVD’s, Photo or Video Lenses, Eyeglasses, Retainers, and many more household items with this Proffesional Ultrasonic Cleaner.
The stainless steel cleaning chamber has a 16-ounce capacity and uses ordinary tap water.

Simply fill the tank with water and and get professional cleaning results.

The quiet, solid state circuitry creates 42,000 ultrasonic energy waves per second, bringing your items to a clean, bright shine without using harsh chemicals or scrubbing.
The extreme vibrations created by the device cleans even the toughest dirt or grime.
Millions of microscopic cleansing bubbles clean in ways no hand or brush could match !

SMITH SPORT OPTICS LENS THRESHOLD GY TDPCGY

High Quality large crocodile finished metal-bodied clamshell eyeglass case with a strong metal hinge.
Lined with a plush styrene interior to protect your eyeglasses.
Fits Medium to most Large Frames.

Optional replacement lenses for the Wiley X Nerve. Easy to change out. Smoke Gray allows 20% light transmission through the lens to your eyes. Provides glare protection without distorting colors. Use for medium to bright light conditions. Excellent tint for beaches, fishing, general purpose use and water sports. 100% UV Protection.

This physics kit introduces kids to the magic world of polarization. They will discover hidden rainbows in clear, plastic utensils and even in some rocks. They will make colorful pictures that can be seen only through the Magic Lenses included in the kit. They will learn how to read a secret message through an optically sensitive rock.

From the Manufacturer This physics kit introduces kids to the magic world of polarization. They will discover hidden rainbows in clear, plastic utensils and even in some rocks. They will make colorful pictures that can be seen only through the Magic Lenses included in the kit. They will learn how to read a secret message through an optically sensitive rock.

This text presents the properties and the potential of diffractive and refractive micro-optical elements, which are key components for building compact optoelectronic systems. Includes a theoretical background and an overview.

Optional replacement lenses for the Smith Interlock Whisper. Easy to change out. Polarized Brown allows 15% light transmission through the lens to your eyes. Reduces 99% of reflected glare from water, snow, sand and pavement. The brown based tint absorbs “blue light”, sharpens visual acuity, and enhancing depth perception. 100% UV Protection.

Optional replacement lenses for the Smith Piston. Easy to change out. Blue Mirror allows 30% light transmission through the lens to your eyes. Neutral gray base lens tint with a multi-layer blue mirror coating. Special mirror coating provides maximum glare reduction with excellent visibility. Best suited for bright conditions. 100% UV Protection.