Photo A is a corneal map of a 13 year old young man.
The picture on the left shows the rings reflecting off the surface of the cornea.The rings represent ~20,000 data points.
The system uses the data points to create a topography map of the surface of the cornea. The picture upper right is the topography map of the young patient's cornea.
The colors represent the curves of the cornea. The black & white circle is a true representation of the patient's pupil size. We want to flatten the curve of the cornea in an amount equivalent to the patient's nearsightedness.So, using the color scale to the right we can see the orange and yellow colors represent a curvature of 44.5 & 44.0.
Since the patients nearsightedness is -1.50, we want to decrease the 44.5 & 44.0 by 1.50 which means we want to change the orange & yellow colors to green.
The data on the bottom of the picture is what we use to custom design the contact lens which will change the colors to green while the patient sleeps. When the lenses are removed upon awakening, the patient sees 20/20 or better without glasses or contacts all day every day as long as he sleeps in the lenses.
Photo B shows the before and after maps after the patient slept in the lenses just one night.
The map bottom right is before the patient slept in the lenses. The picture upper left is after the patient slept in the lenses just one night. You can see the orange and yellow colors have been changed to green and thereby corrected his nearsightedness.
Before sleeping in the contacts, his unaided vision was 20/70. the next morning after sleeping in the lenses his unaided vision is 20/15.
The large map on the right is a difference map. That is, the difference between before and after sleeping in the lenses or the amount we have flattened the cornea. Notice how well centered the flattening is, almost entirely over the pupil which is the visual axis of the eye.
As long as the patient sleeps in the lenses, these results will remain the same, and THE NEARSIGHTEDNESS WON'T GET PROGRESSIVELY WORSE.
While this patient's RX is -1.50, this system is effective up to -6.00 nearsightedness and certain types of astigmatism up to -3.50.