Leybin Lakeside Optical (San Francisco, CA)

• Is it safe to wear extended contact lenses?

  Pesonally speaking, I would not suggest to wear contacts cuz they have a higher risk of getting infection than wearing glasses. Though extended contacts are designed specifically for overnight use and are also far more permeable, you can also get irritation and other eye problem when using them.

• Can different index lens in my glasses cause vision problem?

  I think it would not cause vision problem if you feel comfortable with them. You may need several days to get used to them and your brain would try to adjust between the different lenses.

• Is it possible to test which index your lens is?

  There is no way to detect the lens index after they are cut. But an experienced optician should be able to feel the difference between a 1.56, 1.60 or 1.67 index lens. You can compare the thickness with your original glasses and figure out if the index is right.

• Will swimming cause long term effects on dry eye syndrome?

  It maybe. The harsh chemicals in a swimming pool can cause some people to have irritation in the eyes. They could have redness and a sensation of foreign objects in their eyes. So it is better to wear swimming goggles when swimming.

• Is it bad for your eyes to wear "over the counter" reading glasses?

  Non prescription reading glasses are made with the same power in both lenses. They are suitable for people whose eyes have the same power in both eyes. However, most people have different unique prescription. Some people will even have sore eyes and dizziness when they wear non prescription reading glasses for a long time. Although they are much cheaper and can be purchased easily, it is better and more safe to have your eyes examined and wear prescription one.

• How Thick would a 1.57 index lens be?

  It should depend on how strong your prescription is. The 1.57 index lens will be 15% thinner than standard 1.5 index with the same prescription. They are suitable for wearer under +/_2.00.

• Are macular degeneration more common in women than men?

  People over 50s are likely to have Macular degeneration. Some studies have suggested that some forms of macular degeneration may be more common in women, but other factors such as age, smoking, race, and family history are more important to affect macular degeneration.

• Will the high index lens cost more if your prescription goes higher?

  The cost will be the Same regardless of how higher your prescription is. But the lens will be much thick if you have strong prescription. The thinner lens you choose, the more they cost. The 1.74 lens can cost more than $100.

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