Dr. Paul Yang, OD

• Will I get my eyes screwed up by reading in the dim light?

  Long time reading under the dim light will definitely cause eye strains. Eye strain is one of the reason that casue vision problem. Reading in the proper distance and in the place with enough light can prevent you from bad vision.

• Is it normal to feel blurry when wearing contacts?

  No, it is abnormal. Make sure you didn't wear your contact lenses of the opposite side, maintain and clean them in proper way. If you can ensure all of these, then please take your lenses back to the place you bought them to check if they are prescribed accroding to your prescription or there isn't any scratches on them.

• What bacteria will grow on contact lenses without proper care?

  Bacteria such as S. marcesens, S. liquefaciens, P. aeruginosa, Aeromonas hydrophilia, or Stenotrophomonas maltophlia will grow on contact lenses without proper care. These bacteria are thrived in moist areas and can cause serious corneal infections.

• What does the base curve mean in contact lenses?

  Base curve in a contact lens means the curve of your eye. This number determines the size of your lens according to the shape and size of your eyes.Most base curves are shown as 8.0 to 9.5.

• How can one know if he has astigmatism?

  Put your glasses in front of your eyes horizontally, then turn the glasses to 90 degrees. Look the object through the glasses. If the object squeezes or expands, then you may have astigmatism.

• Do I need to see an doctor before buying sunglasses?

  If you have a valid and correct prescription at hand, it is unnecessary for you to see an eye doctor before buying sunglasses, you just need to offer the prescription to the local optical stores, then they can preocess the prescription sunglasses for you. You can still place your order online, there are many online stores that offer prescription sunglasses with wide selection of fashionable frames.

• How do you find the lost contact lens without wearing glasses?

  Don't walk around, just ask a friend of you to find it for you. As you don't have glasses at hand and if your power is strong, it is hard for your to find the lost contact lenses. Wear the other contact and get one more contact lenses is seemed to be a better method.

• Do I need corrective glasses if I squint a lot?

  No, you don't need glasses for your squit eyes, but there are some other treatment for squint: 1.Preserve or restore vision 2. Straighten the eyes 3. Restore binocular vision. First of all, the eyes are checked to see if they have any refractive error that may be responsible for squint. If there is any significant refractive error present, it is treated first. In some cases (accommodative squint) a correction of refractive error is all that may be required to treat squint. Next the eyes are checked for presence of amblyopia. It is important to treat the amblyopia before the surgery for squint. The parents are explained about the importance of this treatment, as their cooperation is very crucial for the success of this treatment. The squint is treated by surgery of either one or both the eyes. The surgery involves weakening or strengthening of the relevant muscles to restore the balance and to get a good coordination. In some cases with double vision, prisms may be added in the glasses to ease the symptoms. Source:http://www.visitech.org/squint.html

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