LENS TYPES
PLASTIC LENSES  
The vast majority of all eyeglass prescriptions utilize space-age plastic polymers. Plastic lenses offer a much higher impact-resistance than glass lenses, thus providing you with a greater level of safety. This level of safety is adequate for most activities. Some patients may require a secondary prescription made of unbreakable safety lenses for high-impact sports or hazardous working conditions. Plastic lenses are 50% lighter than glass lenses and as a result, provide much greater wearing comfort. Plastic lenses have less-tendency to fog and provide uniformity of tinting, which is very desirable for today's fashion color trends.   Ophthalmic plastic is the material of choice for most prescriptions.

POLYCARBONATE LENSES    
Not many lenses can compare with the impact resistance and safety benefits of polycarbonate lenses. This space-age material has been used for such things as the windows of the President's limousine and the windshields of fighter aircraft.

Polycarbonate lenses meet industrial standards for impact resistance far better than most other lens materials. This special lens material is thinner and lighter than conventional glass or plastic lenses. Polycarbonate lenses naturally block 99% of all harmful ultraviolet radiation. Polycarbonate lenses may scratch easier than conventional plastic lenses, and thus are treated with a scratch-resistant protective coating.

Polycarbonate lenses are highly recommended for all occupational, sport, and/or recreational lifestyles where safety is a concern. Polycarbonate lenses are a lens of choice for all children and active adults.

TRIVEX LENSES  
TRIVEX® is the world's first tri-performance lens material; meaning it offers a triple combination of features never before found in a single material. Superior Optics. Impact Resistance.  Ultra light Weight. This breakthrough in technology is specifically designed to deliver the most comprehensive performance of any lens material, anywhere. 

Link: more about TRIVEX®

THINNER - HI-INDEX LENSES      
The special high-index plastic material is the thinnest lens material available. This high-index material will provide a cosmetically acceptable appearance in prescription eyewear.

Every lens has a density factor rating, indicated by a number called the index of refraction. The higher the index number, the thinner the lens material can be to bend light and correct your vision. This special plastic lens material is also lighter in weight and more impact resistant than conventional plastic lenses. This new high-index plastic polymer is the lens material of choice, combining the valued benefits of a desirable cosmetic appearance with safety and optimum lightweight comfort. Hi-index lenses put your glasses on a diet!

GLASS LENSES     
Ophthalmic crown glass is also available at our office.  For your protection, these lenses are safety tempered so that they may provide a higher degree of impact resistance. However, glass lenses require additional caution.   Tempered glass lenses are not shatter-proof. They should never be worn for occupational, recreational or sporting activities that require safety precautions.

Glass lenses provide superior scratch-resistance when compared to all other lens materials. The durability of glass ophthalmic lenses is indisputable for many corrective and lifestyle prescriptions.

PHOTOCHROMIC (Changeable) LENSES     
Photochromic or light-sensitive lenses are special lenses that darken as light increases and lighten as the amount of light decreases. These glass lenses contain special microscopic photosensitive particles called silver halide crystals. These particles give your new prescription eyewear the ability to react gradually to varied light intensities. Photochromic lenses darken when exposed to ultraviolet radiation of the sun and manmade sources.

Photochromic lenses may seem yellowish at first.   They typically need to go through as many as ten light-to-dark cycles before they darken to their potential.   In cold weather, photochromic lenses react quicker and usually darken to a higher level of intensity.   As an additional benefit, photochromic lenses block 100% of all ultraviolet radiation. Photochronic, the all-around lens material.

TRANSITIONS® SIGNATURE
Fully clear indoors � but outside, they�re more responsive than ever thanks to the exclusive Chromea7� photochromic technology. They are more reactive to UV light so they get darker in more conditions, including bright sun, partially sunny, cloudy, and everything in between. They also adapt to indirect light � such as light reflected from buildings, cars, and many other surfaces.
Link: Transitions SIGNATURE®

POLARIZED PRESCRIPTION LENSES     
Polarized lenses are designed to eliminate glare at certain angles reflected from flat surfaces. Polarized lenses are undoubtedly the finest glare reduction lenses available. Prescription polarized lenses are fashioned from films of polarizing material laminated between clear or tinted glass or plastic lenses.

Polarized lenses reduce glare from shiny horizontal surfaces such as highways, water, or snow. Polarized lenses are ideally suited for active outdoor use. Hunters, fishermen, outdoor workers, sailors, and skiers all benefit from the properties found in these lenses. Since the manufacturing process is relatively complicated, the cost of prescription polarized lenses is higher than that of conventional tints.