Keratoconus
an irregular, cone-shaped cornea
When the cornea thins and bulges, glasses stop working well. Specialty lenses, fit to your eye, can bring vision back.
- Physician-led care
- No upselling, ever
- Insurance checked in advance
- Second opinions welcome
The short answer
Keratoconus is a progressive condition in which the cornea thins and bulges into a cone shape, distorting vision in a way glasses often cannot fully correct. At Riverdell Vision, Dr. Mina Han diagnoses and monitors keratoconus and fits scleral and other specialty contact lenses that vault the irregular cornea to restore sharp, comfortable vision, coordinating with corneal specialists when a procedure such as cross-linking is appropriate.
Reviewed by Dr. Mina Han, OD · Updated June 2026
Understanding keratoconus
In a healthy eye, the cornea is smooth and round. In keratoconus it gradually weakens, thins, and pushes forward into an irregular cone. That irregular surface scatters light, so vision becomes blurry and distorted and changes often, and standard glasses can no longer make it truly sharp. Keratoconus usually begins in the teens or twenties and can keep progressing for years, which is why early diagnosis and monitoring matter.
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A clear path to sharper, more comfortable vision.
We map the precise shape of your cornea, confirm the diagnosis, and track it over time. When lenses are the answer, we fit scleral lenses that vault the cone and hold a cushion of fluid for comfort and crisp vision, or other specialty designs matched to your eye. If your keratoconus is still progressing, we coordinate with corneal specialists for procedures such as cross-linking, so your care is joined up rather than piecemeal.
Good questions, answered plainly.
Concerned about keratoconus?
Request an evaluation and we will explain what we see, and the options, with clear guidance and no pressure.