Lenses & Coatings

Anti-Reflective Coatings:

Anti-reflective coating eliminates glare, reflections, and "ghost images". With normal glasses, much of the light reflects off the lenses. This produces glare. It also reduces the wearer's visual acuity. In other words, the light reflections are a visual and cosmetic problem.

Anti-reflective coatings increase light transmission through the lenses to 99.5 percent. They make it easier to see and easier for others to see you. These coatings are especially useful for those viewing computer screens and driving at night. The performance of anti-reflective lenses continues to improve with the arrival of the newest generation of ultra-premium anti-reflective coatings! They are highly advanced technology that are anti-smudge, making it easy to clean off fingerprints, water, and dust.

Anti-reflective coatings also have the benefit of making your eyes more visible to those around you. Not only do you see better, you can be seen better!

Progressive (No-Line Bifocal) / Bifocal Lenses

For many people, different lenses are needed for seeing at different distances. Bifocal lenses allow the wearer to look through two areas of the lens. One area focuses on distant objects, the other is used for reading.

Most of the time the “reading” area is smaller, and is found in the lower portion of the lens. These bifocals are called lined bifocals or flat-tops. If you are focusing on distant objects, you look through the top half of the lenses. To read a book, magazine, or newspaper, you look through the lower “reading” area.

Recent technologies have developed a new type of lens, called the no-line, or progressive, lens. No-lines provide a smooth transition between distant and near objects because they do not have a distinct line which separates the focusing powers. Instead, a gradual change in power allows the wearer to focus on objects at all distances.

Not all Progressive Lenses are created equally. Your lens choice can make a big difference in the quality of your vision experience. Digital Freeform Progressive Lenses provide the most natural vision, widest fields of view, high quality of contrasts, and sharper, crisper vision.

Photochromics / Photofusion (Lenses darken with sunlight)

Photochromic or Photofusion lenses are self-tinting lenses that darken when exposed to UV rays. The more intensive the UV rays, the darker the lenses. They adjust automatically to changing light conditions. When the wearer goes back indoors, the lenses become clear again. Whether the lenses are clear or dark, they always provide 100% UV protection. An important fact about these lenses is that they do not darken as fully when worn while driving a car, because the windshield absorbs much of the UV light required to activate the lense.

Computer Lenses

Long hours in front of a computer screen can strain your eyes. While concentrating on the screen, you tend to blink less frequently, causing your eyes to become dry and irritated. Computer Vision Syndrome describes a group of eye and vision-related problems that result from prolonged computer use. Many individuals experience eye discomfort and vision problems when viewing a computer screen for extended periods. The level of discomfort appears to increase with the amount of computer use.

The most common symptoms associated with CVS are

  • eyestrain
  • headaches
  • blurred vision
  • dry eyes
  • red and irritated eyes

Computer Vision Syndrome can be diagnosed through a comprehensive eye examination, testing how the eyes focus, move and work together. Uncorrected vision problems can increase the severity of CVS symptoms. If glasses are needed, a specialty lens is designed for computer users that have "windows" specifically for viewing your computer screen, documents on your desk, keyboard, and near objects for reading.

Some important factors in preventing or reducing the symptoms of CVS have to do with the computer and how it is used. This includes lighting conditions, chair comfort, location of reference materials, position of the monitor, and the use of rest breaks.

  • Location of computer screen - Most people find it more comfortable to view a computer when the eyes are looking downward. Optimally, the computer screen should be 15 to 20 degrees below eye level (about 4 or 5 inches) as measured from the center of the screen and 20 to 28 inches from the eyes.
  • Reference materials - These materials should be located above the keyboard and below the monitor. If this is not possible, a document holder can be used beside the monitor. The goal is to position the documents so you do not need to move your head to look from the document to the screen.
  • Lighting - Position the computer screen to avoid glare, particularly from overhead lighting or windows. Use blinds or drapes on windows and replace the light bulbs in desk lamps with bulbs of lower wattage.
  • Anti-glare screens - If there is no way to minimize glare from light sources, consider using a screen glare filter. These filters decrease the amount of light reflected from the screen.
  • Seating position - Chairs should be comfortably padded and conform to the body. Chair height should be adjusted so your feet rest flat on the floor. If your chair has arms, they should be adjusted to provide arm support while you are typing. Your wrists shouldn't rest on the keyboard when typing.
  • Rest breaks - To prevent eyestrain, try to rest your eyes when using the computer for long periods. Rest your eyes for 15 minutes after two hours of continuous computer use. Also, for every 20 minutes of computer viewing, look into the distance for 20 seconds to allow your eyes a chance to refocus.
  • Blinking - To minimize your chances of developing dry eye when using a computer, make an effort to blink frequently. Blinking keeps the front surface of your eye moist.