Eye Wear Care
To put it simply, Computer Vision Syndrome (CVS) is vision blur and eye strain associated with excessive computer, tablet and smartphone use. CVS is characterized by visual symptoms, which result from interaction with a computer display or its environment. In most cases, symptoms occur because the visual demands of the task exceed the visual abilities of the individual to comfortably perform the task.
- Eyestrain (non-specific discomfort)
- Blurred Near Vision
- Blurred Distant Vision
- Dry or Irritated Eyes
- Neck and/or Backaches
- Diplopia (double vision)
ALL LENSES REFLECT SOME LIGHT
Your new glasses are going to improve the way you see the world around you. The lenses will redirect the light rays and focus them on the retina of your eye which will clear the blurred images. Surprisingly, these same lenses will also lose control of and fail to transmit 8% to 15% of the light rays. This phenomenon can lead to eye strain and fatigue, alter the way you appear to yourself and others, and result in distractions, annoyances and visual hazards.
HOW THIS WILL AFFECT YOU
The highly polished surfaces of spectacle lenses reflect light off the front and back surfaces of the lens. The new thinner and lighter weight lens materials reflect more of the available light than the old style glass and plastic lenses.
Front surface reflections are unsightly. They veil our eyes to those who see us. You, the wearer, will see the reflections from the back and front surfaces of the lenses. These vague duplicated images (ghost reflections) create a distraction and cause the eyes to make unnecessary adjustments between the ghost and real images.
WHAT CAN BE DONE?
Multi-layer Anti-Reflective (AR) Coatings reclaim reflected light and improve your visual acuity.
AR coated lenses control the re-imaging conditions and improve the image contrast simultaneously, thus elevating the transmission levels beyond 99%. Your vision is corrected without the glaring trade-offs long associated with eyeglasses. Without this treatment, your lenses only have an 85% to 92% light transmission efficiency.
- Night Drivers… notice objects are clearer and halos and glare are essentially eliminated.
- First Time Wearers… find it is more comfortable and much easier to become accustomed to their glasses, more like natural unaided vision.
- Contact Lens Wearers… can transition between contacts (which have no glare) and glasses much easier.
- Office Workers… appreciate the reduction in glare caused by fluorescent lighting.
- Business Professionals/Public Figures… become aware that with less light reflecting off their lenses, clients are able to see their eyes and expressions clearly.
- Pilots… prefer the coating at night as it makes the instrument panels and landing lights clearer and sharper.
AR BENEFITS ALL EYEGLASSES
AR coating works well on lenses you wear everyday and Cosmetic Tints (the desirable effect of gentle shading has a softer, more natural and less pronounced appearance with AR coatings).
Prescription Sunglasses… Lenses with dark tint produce a mirror-like relfection off the back surfaces when the wearer is surrounded by light. For this reason, many of the premium non-prescription sunglass brands are now supplied with coatings that arrest these reflections. A multi-layered AR coating is recommended for the back surface of prescription sunglass lenses.
Half-Eyes/Reading Glasses… Typically worn further from the eye than other glasses, a troublesome reflected image of the wearer’s eye or eyelashes off the back lens surface will occur unless the lenses have AR coatings.
AR Coatings Also…
- Remove reflections from the edges of lenses mounted in rimless or thin-rimmed frames.
- Decrease the circular rings associated with higher powers.
- Create a more natural appearance on higher powered lenses by making the lenses less visible.
See For Yourself
Lightweight Fashion-Lite® Polycarbonate Lenses are 30% lighter than conventional plastic lenses.
Polycarbonate is a “high index” material; therefore, stronger corrections are more attractive and may be ground thinner. Many prescriptions appear thinner with an Edge Polish. Ask to see a sample of this popular option.
Fashion Tints and Sunglasses
Fashion-Lite® Polycarbonate Lenses are available in a variety of appealing shades and hues for the style and conscious wearer. Rich gray and brown toned tints are an excellent choice for sunglasses.
Anti-Reflective Coating this popular item, which virtually eliminates the annoying glare and ghost images caused by surface reflections, adapts very well to polycarbonate.
Special coatings have been developed to help protect your lenses. This scratch coating feature is available in Fashion-Lite® Polycarbonate Lenses.
Ask about Fashion-Lite® super tough coating designed for children and active adults.
You just can’t beat the strength of Fashion-LiteÂ® Polycarbonate Lenses. They should be considered a must for children of all ages, any person partivipating in active recreational events, anyone that has had refractive surgery, and for persons with monocular vision.
This material is many times stronger than glass or conventional plastic lenses. It is six to ten times more impact resistant than FDA requirements.
NASA developed and used polycarbonate in helmets and face shields worn by astronauts since the early phases of space exploration.
Hazards Of UV Radiation To The Eye
Ultraviolet radiation is divided into three segments… UVC, UVA, and UVB. Studies reveal that the ozone in the stratosphere protects us from the UVC portion of solar radiation. Left unguarded, harmful UVA and UVB radiation penetrates the cornea, ocular lens and retina damaging these delicate tissues of the eye. At particular risk are outdoor workers and those exposed to UV rich environments. Ultraviolet radiation has become increasingly more common in the manufacturing processes of many industries. Some medications and pharmaceutical agents may cause increased sensitivity to UV.
Fashion-Lite® Polycarbonate Lenses offer complete UV protection for the health of your eyes by blocking 100% of the harmful UVA and UVB light. This is not a coating or special treatment, but is built-in for the life of the lenses.
Protection of the eyes from excessive and undesirable wavelengths of radiation (light) is the primary purpose of sunglasses. Quality sun lenses will control the transmission of ultraviolet rays, which studies show will harm the human eye. The key element is maintaining maximum visual performance and safety under the variety of circumstances normal to YOU.
Sunglasses must be practical enough to protect your eyes, yet stylish enough to make you want to wear them. Larger lenses or close fitting sunglass frames will provide the most protection by preventing light from shining around the frame and into your eyes. Wearing a brimmed hat also reduces ocular exposure to the UV in sunlight by at least 50%.
Rely On Your Eye Care Professional
Combining the right lenses, coatings, and tint can be technical. Your eye care professional has the knowledge necessary to fit your optical needs and style preferences.
Look Through The Lenses
If possible, step outside. You want a lens that is comfortable in bright light, yet not so dark that your vision is compromised in low light.
Fit, Comfort, And Style Is Crucial
Like trying on shoes, take time to fully experience the fit and look. If they slip down your nose or don’t enhance your appearance, they won’t be worn. Sun lenses can’t block harmful UV rays if they are in your pocket or purse.
Tell your eye care provider if you are exposed to impact activities at work or play so that the appropriate protective eye wear can be provided.
Use Common Sense
DO NOT stare at the sun, with or without sunglasses. DO NOT wear sunglasses for night driving. REMEMBER that normal sunglasses are impact resistant, but they are NOT SHATTERPROOF.
The Right Sun Glass Lens
Neutral Density Gray
For everyday use, gray sunlenses will fulfill your needs. They block harmful UV rays and prevent color distortion. Depending on your needs, light transmission can vary from 35% to 10%.
Contrast Enhancing Brown
These lenses range in colors from brown, amber, and copper. Selectively, they are used for sports activities requiring visual detail and contrast such as golfing or skiing.
Glare Protection Polarized Lenses
Annoying glare from road surfaces, water, snow or any shiny surface is blocked with polarized lenses. This helps reduce squinting, which in turn reduces eyestrain and tension.
AR coatings on sunglass lenses improve the quality of transmitted light. AR coatings also eliminate annoying reflections off the back surface of lenses which can cause discomfort, visual distraction, and affect overall visual clarity.
These coatings consist of a base tint and either a Metallic or Dielectric mirror coating. Metallic provides general protection. Dielectric improves visual acuity and contrast without darkening the lenses.
Performance Sports Coatings
Sports enthusiasts get better visual performance from special coatings designed to prevent glare and improve contrast. Some options are Snow Screen (for skiing), Sea Screen (for sailors), and Land Screen (for general purpose land based sports). Aviators appreciate the benefits of special contrast enhancing Photochromic lenses.
Studies reveal the earth’s atmosphere only absorbs a portion of UV Rays known as UVC. Harmful UVB and even more damaging UVA Rays, when left unguarded, penetrate the eye’s cornea, ocular lens and retina causing irreversible damage.
Sunglasses, whether plain or prescription, may not offer adequate UV radiation protection. In truth, by darkening the lens to eliminate glare, the pupil actually dilates and more harmful UV radiation can penetrate the eyes.
The Invisible Intruder
UV radiation is not the light you see but the invisible electro-magnetic properties radiated from the sun or from a number of light sources such as fluorescent fixtures, sun tanning lamps, and electric welding areas. Computer monitors do not pose a threat to the eyes as there is almost no UV radiation in an office environment (including coming from a CRT).
No One Can Escape Exposure
All outdoor activities require protection. In addition, areas brightly illuminated with fluorescent fixtures and high intensity mercury vapor lamps (like those used in sports arenas & high crime areas), are some of the less recognized environments posing a real threat to eye health. Surprisingly, some medications may cause eyes to become more sensitive to UV radiation.
All your current and future lenses need UV protection. For more information, ask your eyecare professional.
All computer users should have a comprehensive eye exam. Eyeglasses prescribed for general use often fail to meet the demands for vision clarity.
Single Vision Lenses
Wearers typically experience a partial field of vision and range of view as these lenses have only one area of focus. The unnatural twisting and tilting motion necessary to see clearly can lead to neck and back discomfort.
Designed for everyday use, these are normally positioned so the wearer holds their head erect and lowers their eyes to read. To view the monitor the wearer must tilt their head back (up t0 20Â°) and adjust the distance between themselves and the terminal, which translates into neck and shoulder strain.
Tips for Computer Users
Use corrective lenses.
Once prescribed, optimize your vision comfort and efficiency by wearing DeskTOPâ„¢ lenses.
Lower illumination levels.
Most offices have high illumination that “washes out” images on the screen. When adjusting the light level is not possible a light intensity filter (special tint) added to your lenses will make viewing more comfortable.
Take vision breaks.
Change your focus. Glance across the room or out the window each hour to give the eye muscles a chance to relax.
Blink your eyelids regularly.
Concentrating and staring at the display monitor often inhibits blinking. Poor tear flow over the eye due to reduced blinking leads to eye irritation and dryness.
Display terminal position.
The appropriate distance from your eyes to the screen is best determined by the size of the letters on the display and the adjustability of the workstation. 20-28 inches is generally recommended. The eyes should be in a downward gaze of about 15Â° and the screen should be tilted away from the operator 10° – 20°.
By repositioning the workstation the face of the display screen should be at a right angle to any windows or bright light sources. Adjustable shades, blinds, or curtains can be used to control light levels.
Light should be directed so that it does not shine in the operator’s eyes when the operator is looking at the screen.
Use of a document holder.
It allows you to position viewing materials conveniently and reduce eye movement and stress on neck and shoulder muscles.