How do you choose RGP diameter?

How do you choose RGP diameter?

If the over-refraction shows more minus than the spec RX suggests, the lens is too steep (-0.50D = . 1mm steep). Larger lenses tend to be more comfortable and more stable than small, so increasing diameter is preferred. If changing base curve, you must make changes of at least 0.05mm to cause a change in the fit.

How can I make my RGP lenses more comfortable?

Slowly bring the RGP lens toward your eye and gently place it on the cornea of your eye, while looking straight ahead. Blink multiple times to ensure the lens stays in its correct location, this also allows tears to flow under the lens adding a cushion of comfort.

When do you fit a back surface toric RGP?

A back toric fit is needed when the corneal toricity does not allow a spherical base curve to center properly on the eye. Back toric lenses are ideal when the corneal toricity extends nearly from limbus to limbus.

How long does it take for eyes to adjust to multifocal contacts?

It may even take from four to six weeks for their eyes to adjust. Set the first follow-up appointment for one week and make adjustments as needed. Near visual acuity is not always a good predictor of success with multifocal contact lenses.

How do you get used to wearing multifocal contact lenses?

Some people adapt to the multifocal vision system immediately, while others experience 3-D vision or shadows for about a week. The shadows diminish as you get used to the lens. By the time you go in for your follow up visit, most of the shadows should be gone. So, relax and enjoy your multifocal contact lenses.

How many hours can I wear RGP lenses?

Currently, the maximum wearing schedule approved by the FDA for RGP extended wear is seven days and six nights. Lenses must then be removed for the seventh night and left out of the eye for at least eight hours.

Can you sleep in RGP lenses?

The lenses are usually fitted as daily wear lenses and if the eyes show no sign of ill effects, overnight wear is commenced. Rigid gas permeable (RGP) lenses are also used for overnight wear in some circumstances.

What are the problems with Multifocal contact lenses?

Is the complaint a lack of visual clarity or is it a specific type of visual disturbance such as glare,halo or starbursts?

  • If it’s a lack of clarity,is the problem specific to one viewing distance or is it present at all distances?
  • How long has the patient had the symptoms or lack of clarity?

    • What are the disadvantages of RGP contact lenses?

    Initial discomfort. Many people choose soft contact lenses because they are much more comfortable the first time you put them on.

  • Longer adaptation. RGPs take longer to adapt to,sometimes a few weeks or more.
  • Smaller size.
  • Susceptible to contaminants.

    • What to expect the first time you wear multifocal contacts?

    Great visual acuity for the varying distances from close up to far.

  • Easy transition between the range of different prescriptions.
  • Convenience of being able to see in almost any situation without ever needing extra eyewear.

    • What is your favorite Multifocal contact lens?

    Multifocal contacts come in both hard gas permeable lens types and soft contacts. Our eye doctors in Washington, DC, will meet with you to determine the best type of multifocal lenses for your lifestyle and visual needs. Multifocal contacts offer a convenient, comfortable and clear solution for many of our patients with presbyopia.