More words from him:

OK is effective over long periods. The long term complications are the
same as with long term CL wear. THese days, due to high Dk materials,
the long term problems such as polymegathism and corneal thinning are
not an issue.

THere are no dry eye problems with OK. You have normal vision through
the day without any dehydration.

Thekeratitis aspect comes down to 2 eactors, hygiene and lens design.
The hygiene is no differernt than with any other CL wearer. Clean
lenses, clean hands etc.Being GP materials, bacterial adhesion is low
but can still happen and Dk over 100 means minimal corneal oedema, so
the epithelial surface remains in good shape and this is the single
greatest factor in infection control.

There were a few cases of microbial keratitis reported this year, most
from asia. The problem here is the optometrists often don't know what
they are doing, the patient selection is poor and the lens designs can
be pretty awful. There are a few designs being used which are apical
touch systems and this alone can create some epithelial abrasion which
can lead to bacterial invasion.

Asia represents a big problem for OK as it is being pushed as the cure
for myopia. It is not. It is being pushed as stopping progression.
THere is no research that shows this. They try OK on -12.00 myopes, it
will not work and will never work using current lens designs.

IMO, OK is the second best thing I do at work. It is the best thing I
do with CL's and the results are nothing short of stunning when you
select the right candidate. Just yesterday, I had a 16 year old
patient in, who had been in OK for 1 week. He couldn't believe that he
was reading smaller print from the back of the class than his friends
could. This gives me a big buzz.

OK is a great treatment for a certain group of patients. It is not the
ultimate treatment for all and never should be pushed as such.

It is a great
treatment. It is no different to any overnight wear of CL's, although
there is the exception that there is no lens in the eye for 16-18
hours per day.

OK is a great treatment for the target group. Up to -3.00 can easily
and effectively be treated with OK, and beyond that it gets harder.
You can't treat -6.00 effectively as the size of the treatment zone is
so small you don't get clear vision. I have -4.00 corrected, but not
all of them work. I have a few -5.00 corrections, but they were only
prescribed with the understanding that I did not believe the treatment
would work and the patient insisted on going ahead.

I can let you in on some long term results from my own experience.
When refitting an OK patient after a few years, I have them cease lens
wear for 1-2 weeks and then reperformed topography, to ensure that the
new lenses are as well prescribed as possible, even in a successful
wearer who puts the lenses in 2-3 times per week and has good quality
20/20 vision all week.

My experience is that these patients have virtually identical
topography compared to their pre OK topography. THe results are so
close, there is no more variation than shen you take several
measurements on the one patient in the one sitting.