Matthew K Chan Od (Concord, CA 94521-2964)

• What is the difference between prescription and non prescription reading glasses?

  Non prescription reading glasses usually have the same prescription for each lens. They are cheaper than prescription reading glasses and its lens can't be replaced if it is broken or the prescription is changed. While prescription reading glasses are specially designed for each individual who have a different prescription for each eye. Since prescription reading glasses are customised, they can also correct astigmatism if required. Though non prescription reading glasses won't harm your eyes, you'd better go to an optician to have an eye exam and get prescription reading glasses.

• Is vision therapy relly helpful for amblyopia?

  The younger you are, the more helpful the vision therapy will be for amblyopia. Some eye doctors think the vision therapy can do good to children who have amblyopia.

• Can I ride a rollercoaster after lasik eye surgery?

  Before you ride a rollercoaster, You should ask your doctor to have a check. Personally, I think you can ride the roller coaster if you wear protective eyewear after lasik surgery.

• Which lens material is good for goggles?

  Polycarbonate is a safe material for goggles because they are impact resistant so they can protect the eyes from getting injured.

• Can you change sunglass lenses to prescription glasses?

  It is impossible to change the sunglasses lenses to be prescripted without replacing the lens. If you really love the style, you can keep the frame and ask the optician to put new prescription lenses in it. Most optical store can do that for you if the frame is not excessively big.

• Where can I get non-prescription reading glasses?

  You can get non-prescription reading glasses from most optical store, and it is quite easy to find them. But it is not suggested to get the non prescription ones if you are also nearsighted cuz 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. So the non prescription reading glasses may not fit your prescription and you may get a headache if wearing them too long. It is better to get prescription reading glasses based on your prescription.

• What are the benefit of Vitamin A for eyes?

  Vitamin A can reduce the risk of macular degeneration and help improve night vision. The lack of Vitamin A could cause the cornea to become very dry, leading to clouding of the front of the eye, corneal ulcers and vision loss. Vitamin A deficiency also causes damage to the retina, which also contributes to blindness.

• Can non prescription reading glasses harm your eyes?

  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. If you have your own unique prescription, non prescription reading glasses will make you feel uncomfortable and actually cause problems instead of helping to correct vision. Some people will even have sore eyes and dizziness when they wear non prescription reading glasses for a long time. So it is better and more saft to wear prescription one.

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