Not all scleral lenses are created equal. Think of them on a spectrum from “standard suit” to “bespoke
couture.” The type of patient you are dictates which level of lens capability you need.
Here is the breakdown based on the technology:
| Feature | Conventional Scleral Lenses | EyeFit Scleral Lenses | EyePrintPro Scleral Lenses |
|---|---|---|---|
| Fitting Method | Based on corneal topography and diagnostic trial lenses (trial-and-error). | Physical impression (mold) of the entire ocular surface (cornea and sclera). Lenses have 40,000 data points and can be as large as 18 mm in diameter. | Physical impression (mold) of the entire ocular surface (cornea and sclera). Lenses can be as large as 22 mm in diameter. |
| Fit Precision | Good. Matches the general curve of the sclera. | Very good. Uses topographer data in combination with impression data to create a more personalized curve. Around 40,000 data points can be individually modified. | Near-perfect. Predicts your exact eye shape down to 1-micron detail, due to the availability of 80,000 modifiable data points. |
| Landing Zone | Relies on the average scleral shape in that size. | Matches your actual, physical sclera, including bumps, scars, and asymmetries. | Matches your actual, physical sclera, including bumps, scars, and asymmetries. |
| Best For… | Standard keratoconus, simple post-graft, basic dry eye, smaller eyes. | Complex corneas, moderate scleral asymmetry, moderate dry eye, patients who can’t achieve all-day wear in conventional lenses. | Extreme scleral asymmetry, scarred sclera, failed conventional fits, severe ocular surface disease, diplopia, extreme dry eye (need larger lens for more coverage). |
What Type of Patients Need “More Lens Capability”?
Patients who need the advanced capability of EyeFit or, ultimately, EyePrintPro are those who:
- Have Already Reached the limitations of Conventional Sclerals: The lens moves, pinches, or
causes pain at the edge, patient experiences chronic fogging and/or is unable to get adequate
wear-time or desired visual acuity. - Have Scleral Asymmetry: Their eyes are not perfectly round; one side of the sclera is flatter or
steeper than the other (very common). - Have Post-Surgical or Traumatic Scars: The white of the eye has bumps or depressions from
stitches or injury. - Need for Prism to Correct Double Vision: Patients with double vision (diplopia) often require
prism in their contact lenses. Prism adds a small amount of weight to the lens. Larger-diameter
impression-based scleral lenses are exceptionally stable and distribute that extra weight evenly,
preventing rotation or shifting, which makes them the preferred lens type for patients needing
prism. - Need Higher Order Aberration (HOA) Correction: HOA lenses correct glare and halos. A
perfectly stable EyeFit or EyePrint lens provides the ideal platform for HOA optics; something
harder to achieve in conventional scleral lenses due to the rotation of the lens on the eye. - Suffer from Severe Dry Eye/Graft-Versus-Host Disease: The lens must have minimal
movement on the eye. A conventional lens might shift; while an impression-based lens locks in
place.
The Bottom Line: Conventional lenses are a great starting point, EyeFit is a significant upgrade in
comfort and vision capabilities, and EyePrintPro is the “final destination” for the most challenging eye
conditions.
