Data Driven Scleral Lens Design
FishmanVision is super delighted to now offer Eyeprint scleral lenses. What is so special about EyePrint scleral lenses? They are truly data driven scleral lens designs. In other words, no fitting sets, no endless iterations, no guesswork. How are such precise scleral lenses made?
First, an ocular impression (i.e., a mold) of the eye using the same safe material that is used for dental molds is taken. Yes, this soft and rubbery material is used to mold the surface of the eye from the smallest contours to unusual scleral curves to tissue bumps on the eye. Then, using a 3D scanner, a precise impression of the concave surface of the mold is obtained.
Now, the power of big data is used to design the scleral lens. More specifically, the EyePrintPRO Designer software computes the four zone back surface of the lens: First, a 3D sphere defines the optic zone; second, the transition zone is defined by Elevation-Specific Technology™ coordinated to the surface of the impression; third, the landing zone is also defined by Elevation-Specific Technology. This surface covers the mold with a minimum clearance; fourth, the back surface of the lens is completed with an Edge Lift zone.
The designer can manually adjust each zone clearance and diameter, and immediately see the changes in real time in the 3D viewer. The software lets the user visualize the lens in 3D space – in all directions. The software is capable of raising warnings when the contact lens does not have adequate clearance over the impression at one or more points. The software is capable of adding additional clearance in the periphery, where needed.
Instead of using a series of standardized curvatures, as with scleral lenses, the device is generated to exactly match the unique irregularities of a patient’s eye. It can be successfully fit where scleral lenses or PROSE devices have failed. Additionally, this impression fitting system drastically reduces the time needed for fitting.
Utilizing an impression of the ocular surface gives information that cannot be gleaned from OCTs today. The EyePrint Impression Process obtains information out to a 26mm diameter on the eye.
Lastly, due to the unique rotational stability of the EyePrintPRO device, this device provides a perfect delivery system for premium optics, such as Decentered Optics, Toric, Multifocal, and Optical Prism (in any direction)- more on this functionality in a future post!