Keratoconus: definition, causes and risk factors
Keratoconus is an eye disease whose symptoms stem from a deformation of the cornea. This deformation is responsible for astigmatism, an onset (increase) of myopia, and various symptômes visuels Whose peculiarity is not to be well correctable in spectacles: duplication of brilliant images on a dark background (like the contour that appears split or tripled from the moon in the sky), persistent visual blur, etc. The diagnosis of Keratoconus is confirmed by the carrying out of a corneal topography examination (Study of the shape and variations of curvature of the cornea). Keratoconus is a primitively mechanical condition: Corneal deformation is induced by eye rubbing Excessive.
Classic (but partially erroneous) definition of keratoconus
The keratoconus, from the Greek Kératos for cornea and conus for cone shape, is defined classically as a bilateral, asymmetric, non-inflammatory corneal dystrophy (unknown cause). The keratoconus is characterized by a thinning and progressive deformation of the cornea. In optical terms, this deformation induced in theregular and irregular astigmatism (optical aberrations of high degree) caused by a marked alteration of the geometry of the cornea.
Definition alternative and modern of Keratoconus
In this classic, descriptive and functional definition, the author of this site proposes to substitute a more causal definition. The keratoconus is characterized by the appearance of a deformation of the cornea. This deformation is directly related to the action of Repeated eye rubbing, responsible for a Mechanical stress of the cornea. The keratoconus would not be a primitive dystrophy, nor a genetic disease, but a Mechanical condition of origin: Without friction, without repeated mechanical stress, there is no occurrence of deformation of the corneal dome, and therefore of keratoconus (See page dedicated the role of eye rubbing repeated with respect to the incidence of Keratoconus, see article « Eye rubbing. a sine qua non for keratoconus?« , see article "No Rub, no Cone, the Keraotconus Conjecture".
A site is totally dedicated to the understanding of the origin, as well as the modern and unbiased support of the keratoconus: https://defeatkeratoconus.com/.
De nombreux case of Keratoconus are presented and illustrate the fact that the eye rubbing is an indispensable and necessary element for the genesis of the Keratoconus. The stopping of friction guarantees the absence of progression of the cornea deformation, which confirms the direct responsibility and the indispensable character of the frictions in the induction of the keratoconus.
Keratoconus is not a idiopathic dystrophy but a syndrome whose topographical expression translates the deformation of the cornea, caused by the mechanical stress represented by the repeated eye rubbing. This explanation has the merit of simplicity and is compatible with all the data published in the medical literature. It is crucial to explain to patients who are affected and at risk (allergic, night workers, on screen, etc.) not to rub their eyes. This simple prescription has the potential to eradicate this disease, and to stop its progression.