2nd October 2019

livestrong
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What is an aspheric contact lens?

Better control of spherical aberration with an aspheric contact lens design is the reason behind this claim, according to CooperVision.com. Spherical aberration is defined as the inability of the eye to focus a clear image on the retina.

Correspondingly, what are the different types of contact lenses?

Most contact lenses sold in the US today are either daily disposable, 2 week disposable or monthly disposable lenses.
  • Daily wear contacts.
  • Extended wear contacts.
  • Spherical contacts.
  • Toric contacts.
  • Multifocal / bifocal.
  • Monovision contacts.
  • Rigid gas permeable (RGP) lenses.
  • Hard lenses.

How do I read a contact lens prescription?

Part 1 Reading a Typical Lens Prescription
  1. Locate your prescription.
  2. Recognize the general information.
  3. Understand the main terms.
  4. Locate the term power (PWR) or sphere (SPH).
  5. Understand the base curve (BC).
  6. Find the diameter (DIA).
  7. Get the right brand.
  8. Decipher a lens equation.

What is the normal size of contact lens?

The number one difference in the two types of lenses is that circle lenses will make your eyes look larger, a really flattering look for most women. These lenses are offered in different sizes in diameter 14.0mm, 14.2mm, 14.5mm, 14.8mm, and 15mm- slightly larger than common contact lenses.
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