Widad Is'haq, OD

Keratoconus

Non inflammatory eye condition in which the normally round dome-shaped cornea progressively goes thinner causing a cone-like bulge to develop as a result significant visual impairment.

Keratoconus Classification

1.  Can be classified by cone shape.   

• a.  Nipple, round shape
• b.  Oval, often displaced inferiorly.
• c.  Globus, 75% of cornea affected.

2.  By severity of curvature.

• a.  Mild <45 D in both meridians. 
• b.  Moderate 45 - 52 D in both meridians.
• c.  Advanced >52 D in both meridians.
• d.  Severe >62 D in both meridians.                                     

By using these two classification systems, most cones can be described by severity of curvature and shape (for example, an advanced oval cone).

The goal of any contact lens is to provide vision with maximum comfort over a prolonged period of time, high oxygen flux, and deposit resistance.

"The Rose K design is a unique keratoconus lens design".

The system allows the practitioner to choose lens options based on a systematic fitting approach.  The Rose K lens is fully flexible lens system that works well on early to advance keratoconus patients.  Multiple parameters for this unique lens make fitting, possible for most keratoconic eyes.

From my experience, I have found out that this lens slowing down the progression of the keratoconus and stabilize the development of the disease.

Widad Is'haq, OD, Senior Optometrist, Jeddah Eye Hospital.