Introduction
Prescription glasses and sunglasses have to be functional but also look good. Fortunately, there are so many styles that it's easy to find the right pair. Learn the technical details first, then shop around.
Instructions
Difficulty: Moderately Easy
Prescription eyewear
Steps
1
Step One
Consider frame materials. Aluminum and titanium frames are very durable and offer custom fitting options. Plastic frames are light and durable but usually can't be bent to offer a custom fit.
2
Step Two
Assess overall weight. Glasses need to be comfortable. Large lenses and thick frames add up to heavy glasses, something most people find uncomfortable. If you need thick lenses, get the smallest diameter lens that looks good on you.
3
Step Three
Understand lens materials. Glass lenses resist scratching but are heavy and have lower shatter resistance. Polycarbonate (plastic) lenses are light and shatter resistant but demand care to prevent scratches. Custom options for lenses include an antireflective coating to cut glare, enhanced thinness for light weight and good looks, and photoreactive tinting that gets darker in bright light. Beware: These options can easily double your total cost.
4
Step Four
Shop for metal frames that can withstand vigorous bending without damage. Opt for a separate set of specialized sports glasses with an impact-resistant frame and lenses secured by a strap.
Sunglasses
Steps
1
Step One
Read the label carefully. You want 100 percent UV (ultraviolet light) protection from both UVA and UVB rays. Some lenses are labeled as UV400, which means the same thing.
2
Step Two
Own several pair of sunglasses since one pair can't do everything. Leave a pair in the car for driving--cheap ones if you tend to sit on them. A slim stylish pair will not protect your eyes from debris while riding your bike. Expensive, sporty wrap-arounds will make you look like a yahoo at work.
3
Step Three
Look for shatter-resistant polycarbonate lenses for water and snow sports, which require protection against strong reflected rays. Glass lenses, with their increased scratch resistance and fine optical quality, are a good choice for pricey, dress-up glasses. Polarized lenses, which reduce glare, are always a good idea.
4
Step Four
Choose lens color carefully. Sensitive eyes need dark lenses. Gray or gray-green are good for general use. Brown works well for daytime driving or golf. Yellow and amber provide depth perception in low-light conditions. Avoid light blue and pink for driving or sports as they distort color. Some models have interchangeable lenses.
2008年4月21日星期一
Caring for Your Glasses
Proper lens and frame care ensures clear vision and comfortable wear. Good habits include proper handling, periodic maintenance, adequate cleaning and regular visits to the optician.
Handling
With gentle handling, your glasses will last longer and feel more comfortable. To avoid twisting the frame out of shape, use both hands to put on your glasses. Grasp the ear pieces (arms or temples) in the middle with equal pressure and push the glasses over your ears. To remove them, use the same grip and carefully slide the frames forward over your ears and off your face. This method puts the least amount of stress on your frame and prevents misalignment.
Close your frames before placing them on any surface, and never lay them lens-side down. To prevent accidental scratching, store your glasses in a case whenever they are not being worn. Never put them in a purse or bag without proper protection.
Do not wear your glasses on top of your head when you do not need them to see. This may misalign the frames.
Maintenance
Frames will last longer with proper maintenance. Check for loose screws and temple misalignment periodically. For emergency repairs, use a small eyeglass tool kit, which usually contains a screwdriver and various sizes of temple screws.
Avoid exposing your glasses to personal care products. Hairspray, perfume and other products can damage lens coatings, and cosmetics will dirty the lenses.
Your glasses will inevitably bend out of shape over time. To maintain proper fit, have your glasses adjusted by an optician regularly. How much you wear them, how active you are, and other personal variables will determine how frequently you need to have them adjusted. Ill-fitting glasses can strain your eyes, interfere with vision correction, and create dangerous situations. It is recommended that you do not try to bend your frames back into shape yourself. The service is usually complimentary at optical shops and eyecare offices where a trained professional can guarantee you a proper adjustment.
Cleaning
Keep your glasses clean. This ensures that you benefit fully from the corrective power of the prescription, and helps prevent scratching the lenses.
First, run your lenses under warm running water. Then dip them in soapy water and rub them gently with your fingers. Rinse them to wash away dirt and oil. A gentle dishwashing liquid makes a good cleanser. There are also special lens cleaners that can be sprayed on the lens (although some may damage lens coatings). Avoid using household cleaners, disinfectants, acetone or soaps with cream.
Wipe the lenses with a clean, soft, lint-free cloth. Do not use paper towels, silicone tissues, facial tissues, or old rags that may have embedded dirt. These materials may scratch your lenses. Many optical suppliers sell microfiber cleaning cloths. These efficient cloths are machine washable and very gentle on your lenses.
The same techniques apply toward cleaning the frames. The temples, in particular, need to be cleaned often because they are handled the most. Repeated contact with the skin causes oil to accumulate and can degrade the frame finish.
Handling
With gentle handling, your glasses will last longer and feel more comfortable. To avoid twisting the frame out of shape, use both hands to put on your glasses. Grasp the ear pieces (arms or temples) in the middle with equal pressure and push the glasses over your ears. To remove them, use the same grip and carefully slide the frames forward over your ears and off your face. This method puts the least amount of stress on your frame and prevents misalignment.
Close your frames before placing them on any surface, and never lay them lens-side down. To prevent accidental scratching, store your glasses in a case whenever they are not being worn. Never put them in a purse or bag without proper protection.
Do not wear your glasses on top of your head when you do not need them to see. This may misalign the frames.
Maintenance
Frames will last longer with proper maintenance. Check for loose screws and temple misalignment periodically. For emergency repairs, use a small eyeglass tool kit, which usually contains a screwdriver and various sizes of temple screws.
Avoid exposing your glasses to personal care products. Hairspray, perfume and other products can damage lens coatings, and cosmetics will dirty the lenses.
Your glasses will inevitably bend out of shape over time. To maintain proper fit, have your glasses adjusted by an optician regularly. How much you wear them, how active you are, and other personal variables will determine how frequently you need to have them adjusted. Ill-fitting glasses can strain your eyes, interfere with vision correction, and create dangerous situations. It is recommended that you do not try to bend your frames back into shape yourself. The service is usually complimentary at optical shops and eyecare offices where a trained professional can guarantee you a proper adjustment.
Cleaning
Keep your glasses clean. This ensures that you benefit fully from the corrective power of the prescription, and helps prevent scratching the lenses.
First, run your lenses under warm running water. Then dip them in soapy water and rub them gently with your fingers. Rinse them to wash away dirt and oil. A gentle dishwashing liquid makes a good cleanser. There are also special lens cleaners that can be sprayed on the lens (although some may damage lens coatings). Avoid using household cleaners, disinfectants, acetone or soaps with cream.
Wipe the lenses with a clean, soft, lint-free cloth. Do not use paper towels, silicone tissues, facial tissues, or old rags that may have embedded dirt. These materials may scratch your lenses. Many optical suppliers sell microfiber cleaning cloths. These efficient cloths are machine washable and very gentle on your lenses.
The same techniques apply toward cleaning the frames. The temples, in particular, need to be cleaned often because they are handled the most. Repeated contact with the skin causes oil to accumulate and can degrade the frame finish.
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