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• What is the problem for burning and itching eyes?

  Burning eyes and itching eyes may be caused by eye allergies or eye infection. Such as sunburn, dust, and chemical irritants will cause burning eyes and itching eyes. Or you may have some eye problems. You'd better go to your doctor to have your eyes checked and the doctor will find out the exact reason that cause the burning and itching eyes.

• what kind of glasses can reduce eye strain when working on the computer ?

  Computer glasses are special glasses prescribed to lessen the symptoms associated with computer vision syndrome (CVS). CVS describes a group of symptoms caused by prolonged computer use. Symptoms appear because the eyes and brain react differently to words on a computer screen than they do to printed text. Symptoms often include eyestrain, dry eyes, headaches and blurred vision. Many people try to compensate for these vision problems by leaning forward or by looking down to see through the bottom portion of their glasses, often resulting in back and shoulder pain. Source:http://vision.about.com/od/eyeglasses/f/Computer_Glasses.htm

• How do the doctors measure my refractive errors?

  Ophthalmologists usually use a machine used to provide an objective estimate of refractive error. The patient would be asked to sit down with their chin on a "chin rest" then focus on the image inside the machine. The doctor will get an estimate of the objective refractive error.

• Will it make a big differentce when wearing glass glasses or plastic glasses?

  Glasses optical clarity is the best and as such glass lenses will have little to no distortion.Adding to that, it is the most scratch resistant optical material.However, glass will almost certainly shatter on impact. Plastic lenses are mainly made from polycarbonate and CR-39 plastic material. Polycarbonate is popular for lenses because of its high resistance to impact. polycarbonate lenses also have the highest distortion compared to any other material. CR-9 is another type of optical plastic. It has little distortion compared to polycarbonate. It is thinner and lighter than glass too.plastic being a lighter material makes plastic lenses much lighter than glass and therefore they are less likely to cause indentations. Source:http://www.differencebetween.net/object/difference-between-plastic-and-glass-lenses/

• What is the material that sunglasses are made from?

  Sunglass frames are made from metal, plastic or beryllium. Metal frames, particularly expensive ones, are often made of mixtures of nickel and other metals such as silver. Plastic frames contain various materials, such as zyl,cellulose acetate propionate,nylon and castor oil. Beryllium, a steel-gray metal, is a lower-cost alternative to titanium eyewear.

• Can I use auto polish to remove the scratch on glasses?

  1. Clean your eyeglasses regularly with a soft handsoap and water. 2. Draw over the scratch with a special marker such as Sandford's White Peel-Off China Marker. 3.Apply a CD- or DVD-cleaning solution and follow the directions on the packaging. 4.Buff the scratch away with a progression of cloths. 5.Bring your glasses to a professional to see if repair work can be done on the lenses. Source:http://www.ehow.com/how_4499861_remove-scratches-eyeglasses.html

• Can aspheric lenses help nearsighted people look better?

  It is the power on the lenses help people look better, not the Asperic lenses or the Spherical lenses, not the thickness of the lenses. Asperical reduce those unwanted magnifications and give the wearer a more cosmetically pleasing appearance. Learn more about Asperic lenses and the Spherical lenses at http://www.firmoo.com/help-p-83.shtml.

• Do eye exercises really help to improve vision?

  This question is remain highly controversial and most vision experts contend there is little or no scientific evidence that shows they work.In fact, several popular eye exercise programs have been removed from the marketplace for making apparently false claims about their effectiveness.Self-help programs differ from supervised programs of vision therapy prescribed by eye doctors (usually optometrists) to correct certain eye alignment and other binocular vision problems, or to enhance dynamic visual skills for sports vision. Source:http://www.allaboutvision.com/buysmart/see_clearly.htm

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