|The custom aspheric design of the 54 Multifocal from SpecialEyes provides vision for near, intermediate, and distance ranges.|
|The SoClear corneal-scleral contact lens from Art Optical, seen here in a fluorescein pattern, equally distributes its weight along the corneal and scleral surfaces.|
|Alden’s NovaKone lenses can be a viable solution for all stages of keratoconus and pellucid marginal degeneration.|
Contact lens options for challenging corneas can set your practice apart.
Increasing profits has become harder over the past few years for many eyecare professionals. It’s been stated many times that if you want to succeed, you need to do things differently than your competition.
One potential area of growth may be with specialty contact lenses. Do you know of a doctor in your area that fits a lot of specialty lenses? If not, that could be a great opportunity. Think of the potential patients you could be seeing if no one else is working with challenging-to-fit corneas.
Here is a review of some of the specialty lenses available.
It seems that SynergEyes, Inc. realized a complicated fitting process was preventing some doctors from fitting their contact lenses. So the company implemented empirical ordering to reduce the number of fitting visits, and offered an improved first-lens experience. SynergEyes contact lenses include:
- Duette HD, which can be ordered empirically using the Empirical Lens Calculator on the SynergEyes website or by contacting SynergEyes consultation and design. The Duette HD lens is fit like a soft lens after the gas permeable (GP) base curve has been established, then the fit is assessed based on comfort, movement, and over-refraction. Fitting changes are seldom needed, but slight power adjustments may be necessary at follow-up. An alignment fit of the lens should provide good comfort, centration, and adequate movement by displacing the weight of the lens over a broad surface area.
- Ultra Health has a high-DK SiHy skirt and high-Dk GP center. Updated landing zones and lens design optimize tear exchange and comfort. The new reverse geometry GP design offers twice the lift of previous designs to accommodate a broader range of corneal irregularities. By vaulting over most ectasias without bearing, the lens helps maintain the integrity
of the corneal surface.
- ClearKone, a lens specifically designed for the treatment of keratoconus and other corneal irregularities. ClearKone has a rigid center that creates a smooth uniform surface allowing light to focus properly. The GP portion of the lens is centered over the visual axis regardless of cone location or size, decreasing visual distortions.
SpecialEyes manufactures a wide range of made-to-order, high-performing spherical, toric, and multifocal contact lenses. SpecialEyes lenses are an excellent choice for patients with a history of sensitivity to axis-cylinder misalignment or intolerance of GP lenses and presbyopes who have been unsuccessful with other multifocal lenses.
The SpecialEyes Prescribing Nomogram enables ECPs to quickly design custom soft contact lenses for patients with an average corneal diameter or horizontal visible iris diameter (HVID) of 11.6 to 12.0mm. The SpecialEyes Arc Length Calculator can be used to design lenses when HVID is larger or smaller than average.
- The 54 Multifocal is the newest presbyopic option from SpecialEyes. The custom aspheric design allows for easier patient adaptation, and the customizable power progression and center zone assist in meeting each patient’s visual needs. 54 Multifocal provides vision for all ranges””near, intermediate, and distance””and is available in sphere and toric, in any base curve, power, or axis, with add powers up to +4.00D. The company recommends a center-near design OU, and a center-distance design is available upon request.
Art Optical Contact Lens, Inc. offers a complete line of specialty lens designs, among them:
- Rose K, which, according to Art Optical, is the most widely used keratoconus lens in the world. The Rose K2 family is comprised of a fitting-set-based series of designs to fit all corneal shapes, sizes, and stages of keratoconus, pellucid marginal degeneration (PMD), keratoglobus, LASIK-induced ecstasia, and patients who have undergone penetrating keratoplasty. Rose K2 lenses also offer enhanced comfort due to reduced lens mass.
- SoClear corneal-scleral contact lenses are designed to equally distribute weight along the corneal and scleral surfaces. SoClear lenses consists of a standard and aspherical cone design. SoClear Standard is ideal for astigmatism correction, difficult single vision patients, oval keratoconus, irregular corneas, PMD, and corneal ectasia. SoClear Cone is ideal for moderate to advanced nipple and oval keratoconus.
Alden Optical’s specialty contact lenses include:
- NovaKone, a custom soft lens with cylinder power correction to -10.00D. While NovaKone can be a viable solution for all stages of keratoconus and PMD, they’re especially effective for patients with more advanced conditions, those who have failed to tolerate GPs, or who have been unsuccessful with hybrid and scleral lenses.
- Zenlens, Alden’s newest specialty lens, is a mini-scleral, fully vaulting lens. Zenlens allows doctors to fit a wide variety of corneal shapes and sizes using a single fitting set and fitting philosophy. It’s a well-designed scleral lens with refined peripheral curves and generous landing zone. Both prolate and oblate designs are available and diameters of 16mm and 17mm ensure success with a wide range of corneal sizes. Toric peripheral curves, customized center thickness, flexure controlling profiles, and front toric prescriptions can also be ordered.
These Blanchard Contact Lens, Inc.’s specialty lenses are also options for the challenging cornea:
- Onefit Cone is specifically designed for highly irregular corneas. Onefit is supported by the conjunctiva and the fluid layer under the lens, rather than by the cornea. It is designed to vault the entire corneal surface, including the limbal area, with an optimal segment height. Clearance over the cornea varies from center to the periphery to optimize oxygen transmissibility.
- The msd Mini-Scleral Design has a posterior lens surface incorporating reverse geometry with specially designed optical and posterior curves. The aspheric front-surface optics reduces aberrations while the thinner profile and design results in minimal lens edge-lid interaction. The thinner lens profile combined with the high oxygen permeability of Boston XO and Boston XO2 materials allow maximum oxygen transmission. The msd is easy to fit, and is suitable for anterior segment pathology cases ranging from dry eye and advanced keratoconus to post-Lasik and other compromised and irregular corneas that have less than optimal results with other types of contact lenses.
Eric L. Bran, Professional Editor of Optometric Office, is in private group practice in Ridgefield, CT.
WHERE TO FIND IT:
Alden Optical •800-253-3669 •aldenoptical.com
Art Optical Contact Lens, Inc. •800-253-9364 •artoptical.com
Blanchard Contact Lens, Inc. •800-367-4009 •blanchardlab.com
SpecialEyes •866-404-1060 •specialeyesqc.com
SynergEyes, Inc. •877-SEE-2012 •synergeyes.com