Scleral Lens Fitting Process
Step 1: Map using the sMap3D™
First, we will use the advanced technology of the sMap3D™ to efficiently and non-invasively map your eye. This process only takes about 3-5 minutes in which you will perform 3 gazes (straight, down-up) with 1 final, stitched image.
Step 2: Determine the Rx for best vision.
Secondly, we select a diagnostic lens and place it on the eye. We then determine the prescription for the best possible vision (over-refraction).
Step 3: OCT imaging over Diagnostic Scleral Lens
An instrument called an OCT (optical coherence tomography) uses light waves to take cross-sectional images of the Scleral lens on the cornea and accurately determine the fit of the diagnostic contact lens.
Step 4: Design the Scleral Lens
Next, the doctor will analyze your sMap3D™ data and OCT imaging to design the best possible lens for you. The software will be used to virtually design a 3D rendering of the scleral contact lens.
Step 5: Submit data and fitting information.
Finally, the doctor will submit the sMap3D™ data, fitting information and over-refraction to Visionary Optics for manufacturing.
The mapping information from your sclera and cornea is used to virtually design a 3D rendering of the scleral contact lens prior to manufacturing. This allows the doctor to see the expected fit of the lens over the unique contours of the eye.
Using the sMap3D to virtually design
a Scleral Contact Lens.
In addition to traditional slit lamp evaluation, we use OCT imaging over the central and peripheral areas of a scleral contact lens to accurately determine the fit.