Single Vision
Single vision lenses have one prescription across their entire surface. They are used to correct myopia, hyperopia and astigmatism. The choice of single vision lenses is dependent on the prescription.
Progressive Multifocals
These lenses address more than one prescription across the surface and are constructed so the changes in the prescription are not visible (also called no-line bifocals.) The power gradually changes from distance at the top down to close up and reading powers at the bottom.
Our Opticians provide the latest Multifocal Digital Lens Technology for optimal lens performance.
Conventional Bifocals
Bifocals have two sections on the lens surface. A distance correction at the top and a lined section for reading at the bottom. 
Trifocals have three sections. A distance section at the top, a middle lined section for mid range and lower lined section for up close vision
Computer or Office Lenses
Some lenses are specially designed for specific functions, as opposed to regular, everyday use. For example, keeping pace with the Internet revolution, 
Nikon has developed advanced reading lenses for both near and intermediate vision. Occupational lenses such as Nikon Online are uniquely designed for office and computer use as well as other sustained near-vision activities.
Specialty lenses are available for vocations and activities such as hobbies, music and shooting.
High Index
Optical technology continues to improve creating thinner, light weight lenses which are valuable to the aesthetics and visual performances of high prescriptions. High Index Lenses are available in 1.6, 1.67 and 1.74 indexes in most single vision and multifocal lenses. The higher the index the thinner and lighter the lenses. These are significant properties to those who are nearsighted or farsighted since it reduces edge thickness and the “coke bottle” look.
Coatings
Our lenses are available with a number of optional coatings, customized to your needs. Coatings include anti-reflective, scratch-resistant, anti-fog, and UV protection. Coatings help protect your eyes and increase the durability of your glasses. At Port Perry Optical we work with you to match your needs to the available optical coatings.
No-Glare Lenses: A Clear Vision of the World
Anti-reflective coatings allow the light to pass through the lenses eliminating ghost images and glare. Choosing the right lenses is critical to your visual health, and your spectacles are not complete without No-Glare lenses. No-Glare lenses are recommended for all ages and provide all the benefits below:
See Better
No-Glare lenses mean safer, more comfortable night time driving by reducing glare from headlights, taillights and street lights.
Look Better
No-Glare lenses are clean, clear, and glare-free so they are virtually invisible to those around y0u. People see you instead of your lenses.
Feel Better
No-Glare lenses mean fewer headaches and less eye fatigue caused by reflections from computer screens and daytime lights.
No-Glare lenses provide you clearer vision by reducing: glare, scratches, smudge, dust and water.
Transitions®
Transitions ® Lenses alter between light and dark adjusting to the surrounding light conditions. They are clear indoors and dark outdoors.
Transitions can co habit with other coatings for maximum visual clarity and can be manufactured for any type of lens or lens material.
“Signature” Transitions, the latest generation in the Transitions family, are currently available exclusively through Port Perry Optical and other Varilux Distributors. Signature Transition offer more range of darkness and faster reaction time and can work off indirect light. Brown shades perform 23% darker.
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