Optometry Center (Hayward, CA 94541)

• Can the eye doctor know the vision distortion is caused by astigmatism or cataracts?

  It is quite easy for the doctor to tell as they are quite different things. You can see cataract through the pupil because it is a physical change in the lens of the eye, while astigmatism are caused by light refracting. They can't be confused.

• What are the advantages of progressive glasses over lined bifocals ?

  Traditional bifocals and trifocals may bring “image jump” since they have sharply defined boundaries between different parts of the lenses. In contrast, progressive lenses offer a smooth and seamless power transition, so that images at varying distances are also smooth and comfortable.

• What are the disadvantages of lined Bifocal glasses?

  There are some separated vision areas in lined bifocal glasses. Therefore, some wearers can not get used to radical vision change with those glasses. Or some of them will suffer from very serious dizziness or headaches.

• Is there a device on the market that can help to insert and take out contact lenses automatically?

  I guess there is no such device that can help you insert and take out the contact lenses automatically. But it is quite a good idea. If such device exists, it must be very popular. You can buy extended contacts which don't need to get in and take out frequently.

• Will the Color of Tinted Contact Lenses Fade?

  Yes, the color will start to fade over time. But fortunately most colored contacts have to be replaced before they start to fade. So you don't need to worry about this.

• Do polycarbonate glasses get scratched easily?

  Yes, it is true. Polycarbonate can get scratched even you are cleaning them. Some people scratch their lenses by cleaning them with paper towel. So you should be much careful with the polycarbonate lens and it is better to add an anti-scratch coating on it.

• What are the benefits of pinhole glasses?

  While ensuring the sharpness of the image, pinhole glasses can further relax the eyes. This additional effect occurs because those pinhole glasses are smaller than the size of the eye's normal pupil. Eye strain and even headache are common after a long period of computer work. Similar situation may also occur while reading in very poor light. These pinhole glasses can help the eyes reduce tension, and this effect can be immediately felt.

• Will it damage my eyes if I use only one contact lens?

  I think it would not harm your eyes as you can see fine with your right eye and don't need vision correction. As long as you can feel comfortable with it, it is ok to wear only one contact lens.

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