Cornea
Keratoconus
Progressive deformation of the cornea causing double vision and irregular astigmatism. Diagnosis and monitoring.
Written and medically reviewed by Dr Michael Serrero · Updated June 2026
What is keratoconus?
Keratoconus is a progressive deformation of the cornea, which thins and takes on a cone shape. It causes irregular astigmatism, double vision and growing discomfort.
Diagnosis relies on corneal topography. Tailored management can, depending on the stage, correct vision and stabilise the cornea.
How this condition affects vision.
The corneal deformation causes double images, “ghosting” and irregular astigmatism that is hard to correct with ordinary glasses.
An indicative simulation meant to illustrate a visual experience; it is neither a diagnosis nor a measurement.
From diagnosis to stabilisation.
Diagnosis & monitoring
Corneal topography and monitoring of progression.
- Topography
- Pachymetry
Treatments
Depending on the stage.
- Fitted contact lenses
- Cross-linking
- Intra-corneal rings
Complex cases
Keratoconus is among the situations assessed in a dedicated consultation and second opinion.
Frequently asked questions.
How does keratoconus present?
With reduced vision, evolving astigmatism, double images or light sensitivity, often in teenagers or young adults.
How is it diagnosed?
Corneal topography reveals the characteristic deformation of the cornea.
What treatments are available?
Depending on the stage: fitted contact lenses, cross-linking to stabilise the cornea, intra-corneal rings, and in some cases a graft.
Does keratoconus always progress?
Its course varies; regular monitoring allows a stabilising treatment to be offered at the right time.
General information that does not replace a medical consultation. Results vary from one patient to another.
See clearly again.
Consultations Monday to Saturday at the Issy-les-Moulineaux practice.