Night Lens Therapy

Night Lens Therapy is a non-surgical procedure using specially designed contact lenses to gently reshape the curvature of the eye to improve vision.

Night Lens Therapy is also known as Orthokeratology, Ortho-K, Corneal Refractive Therapy or CRT as well as other names.

This is a revolutionary non-surgical procedure that eliminates the need for glasses or daytime contact lenses. It improves vision by gently reshaping your eye WHILE YOU SLEEP using specially designed therapeutic contact lenses. You just put the specially fitted lenses in at bedtime, and when you awake, you will have clear, sharp, natural vision for your waking hours.

This safe and effective treatment can correct near-sightedness (including high prescriptions), farsightedness, astigmatism and presbyopia (blurred near vision). It is a great alternative to LASIK for those who don’t want the risk or are not ready for surgery.

Think of the cornea as the eye’s equivalent of a watch crystal. It is a clear, dome shaped structure that overlies the colored iris. Its tissue is most similar to clear, wet skin; and like skin it is very pliable. Because the cornea separates the eye from air and the rest of the outside world and because it has a curvature that bends light towards the back of the eye, it is responsible for most of the eye’s corrective power and contributes to various conditions such as nearsightedness (myopia), farsightedness (hyperopia), and the blur of astigmatism.

When you choose Night Lens Therapy a few key tests must be performed. Chief among these tests is the determination that your eyes are healthy. Your doctor at Pacific View Eye Care Center will examine the retina and also the health of the outside of the eye. The other key procedure is the mapping of your cornea. To do this an instrument called a Topographer is used. Just like a topographical map of a camping area show hills, plains, and valleys; the topography of the eye shows your doctor exactly how your cornea is shaped. The information from your corneal mapping plus the size of your cornea and the prescription needed to correct your vision are all used to design the retainer lenses (corneal molds) needed to create the therapy’s effect.

On the day you pick up your Night Lens Therapy retainer lenses you will be instructed in how to insert, remove, and take care your vision retainers. The retainer lenses will be put on again after which you will be asked to sit for an hour in the office with your eyes closed  (we recommend listening to music with headphones during this time). We will then assess the fit and determine how much effect has occurred over the hour.

Throughout your initial fitting period, your doctor will monitor your corneal health and the effectiveness of treatment. At certain times your retainer lens fit may be modified to achieve your goals.
Night Lens Therapy can produce results in a surprisingly short period of time. The length of treatment to achieve your goals can vary from patient to patient.

Factors which can affect the speed of treatment include:

  • your initial prescription
  • corneal rigidity
  • tear quality and quantity
  • your expectations.

We advise patients that they will probably need to use their retainers every night to maintain their newly corrected vision although some patients are able to vary their wearing time to once every two to four nights.

For more information about Night Lens Therapy visit