AOOK Therapy Frequently Asked Questions

I thought overnight wear was not good for the eyes?
It is overnight wear combined with all day wear that can be bad for your eyes i.e. 24 hour wear, 7 days a week. The eyes never get a full oxygen break and in addition the lenses get very dirty, very quickly. They do not get cleaned very often (at most once/week). Build up and debris on the lenses can interfere with oxygen delivery to the corneas and can cause lid reaction problems.

Build up occurs at a very slow rate with AOOK therapy, especially since the retainers are cleaned every morning after wear. You get full oxygen delivery during the day (highest availability) so it is rare for the eyes to experience any over wear problems. It is rare for us to encounter a client we cannot successfully fit, if they show good potential in the initial consultation.

Almost every client that we fit, who was deemed a good candidate, successfully adapts to overnight wear and daytime freedom from contacts and glasses.

Will I be able to wear these lenses?
I have never been able to wear contacts comfortably (dryness, discomfort, etc.).
Yes! Almost all discomfort comes from the movement of the lid over the lens surface and edges, or occasionally from debris that works its way up under the lens.

Neither problem occurs with AOOK. The AOOK lens is under a closed eyelid (no movement) so no sensation is felt.

No one that I have fitted with the AOOK lenses, with normal sleep patterns, has been troubled with overnight discomfort.

Who can be successful with AOOK Therapy?
We use your Rx to presort for possible suitability. We will book a consultation for corrections up to -5.00. Newer designs may make it possible for us to go beyond this limit. Some astigmatism can also be corrected. However, even a suitable Rx may not guarantee that you can be fitted. It is the amount of change required in conjunction with the shape of your eye that determines whether you will be a good candidate. The closer to ideal the eye shape the more change that can be achieved (higher Rx).

Presbyopia (the need for bifocals) will be partially corrected with regular AOOK retainer lenses, due to the way in which the cornea is reshaped, and the correction can be enhanced with a Monovision setting.

We have some newer designs that may successfully correct for higher amounts of astigmatism, and for far-sighted prescriptions.

Why have I not heard about this therapy?
To perform this therapy we are not buying multi-million dollar machines. The manufacturers of the laser refractive surgery machines put a lot of money and time into advertising to create demand for their procedure (otherwise they would have a hard time selling their machines).

Unfortunately, the same type of money does not exist for advertising AOOK. Advertising is up to the individual practitioner.

Can I see with the retainer lens in, if I wake up at night?
Yes you can see with the custom retainer lenses that have been specifically designed for you.

If you need to see in an emergency or for any night time movements, you do not have to stop to take out the retainers.

Unfortunately, with the temporary trials you may, or may not be able to see well for a few nights, during the design process. Often, but not always, you can see fine with them as well.

What happens if my Rx needs to be changed after being fitted with AOOK?
As this is a reversible therapy, we can either add or subtract effect to adjust for changes in Rx needed.

This becomes particularly important when you become presbyopic (when bifocals are needed in your 40ís). We can adapt the effect to give you back some reading ability.

Normally if you have had Laser Refractive Surgery, no reduction in the effect is possible, because you cannot put back tissue that has been removed. With laser surgery, to retain reading ability, you would need to start wearing reading glasses, bifocals or multifocals of some type.

What happens after the initial consultation?
If it is determined that you are a good candidate, we validate our results from the consultation by using preset trials. We expect a certain pattern of change to take place in the shape of the cornea with the trial lenses. It can take as little as one overnight to determine if that pattern is emerging, but it typically takes at least 3 or 4 overnight wears to be certain. Occasionally, a second trial is required if the first trial does not achieve the expected pattern.

The trials are not necessarily expected to achieve the full result that the custom retainers will.

The computer predicts how much change that the trials are expected to achieve. By comparing the prediction to what is actually achieved, we are able to design the first custom retainers more accurately and achieve better results. As we are using different brands of AOOK lenses, this process may alter, with different brands.

How long is a consultation, and what happens?
Several measurements are taken, some tests done, and a series of corneal topographies are produced. You are required for this part and it generally takes around an hour.

After this appointment, the data gathered needs to be entered into a software program that predicts whether you will be a good candidate or not. This takes an hour or two. The results will be available shortly thereafter, and you will be contacted.

How long ago was AOOK introduced?
Modern AOOK was introduced around 1994. Lens designs and computer programs have been improved over the years. It only arrived in Winnipeg in 2003.
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