Henry G. Covetta, O.D.

• Is there any kind of lenses that can block glare at night?

  Some people wear sunglasses or polarized glasses to reduce glare when they drive at night. I am not sure whether they do work well. In my opinion, the best choice for night driving is to get a pair of eyeglasses with clear lenses and add an AR coating to the lenses, which will help block glare while driving at night.

• How can I repair the broken arm in glasses?

  In most cases, the broken arm may be caused by the missing of screws. A replacement screw will fix the problem. You may go to the local optical store and ask the workers to fix the right screw for your frames. If the screw on your frames become loose, you can use a screw driver to tighten it. If the arms of your frame is broken off, you may repair broken frames at the temples by using hot glue (for plastic frames) - boiling water and pins. Alternatively, replace the temple piece with a piece from another set of glasses. Unscrew the hinges and screw the new temple piece into position. Source:http://www.ehow.com/how_7149979_repair-broken-eyeglasses.html

• Is keratoconus a refractive error?

  Keratoconus is a progressive eye disease in which the normally round cornea thins and begins to bulge into a cone-like shape. This cone shape deflects light as it enters the eye on its way to the light-sensitive retina, causing distorted vision. There are several factors that cause Keratoconus: an imbalance of enzymes within the cornea, overexposure to ultraviolet rays from the sun, excessive eye rubbing, a history of poorly fitted contact lenses and chronic eye irritation.Keratoconus can result in nearsightedness and/or astigmatism, those are all refractice errors. Eyeglasses cannot help to patient with keratoconus, but contact lenses can. Learn more at http://www.allaboutvision.com/conditions/keratoconus.htm

• What kind of sunglasses are good for me?

  Dark tinted color lenses can protect you from brightness, such as brown/gray/green.Polarized lenses could also prevent you from glare. If you often work outdoors, you'd better choose these kinds of lenses.

• Can my vision get worse if I wear my glasses all the time?

  Wearing glasses all the time won't worsen your vision or make you depend on your glasses. We wear glasses just because it give us clear vision so that we can see better and feel better. So if you need, then you can wear your glasses all the time.

• How often should I get my eyes checked?

  For children, it is good to have their eyes checked every year because the eye conditions of children are unstable and always changing. For adults who are under 60 and have perfect vision, it is still good to have their eyes checked at least every two years. If you are over 60, you'd better have an eye exam once a year.

• Is it possible for a 18-year-old person to get lasik surgery?

  The doctor is right.If your son's vision is not stable,it is not suggested to have lasik surgery,otherwise his vision will still keep changing after the surgery.

• What kind of contacts should I choose?

  To keep your eyes healthy, I think the monthly contacts is a good choice for you though they are more expensive than the yearly. However, the advantage o fthe monthly contacts is that there will be few deposits, especially proteins, on the lenses because you replace the lens very often. While the yearly contacts may have many deposits on the lens due to overtime use. The deposits can make your vision blurry and sometimes they can lead to chronic inflammation. So you'd better choose the monthly contacts.

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