H18.61

Clinical Causes: Genetic factors that affect corneal structure Chronic eye rubbing, particularly in sensitive individuals Certain connective tissue disorders such as Ehlers-Danlos syndrome or Marfan syndrome Environmental factors, including prolonged exposure to ultraviolet light or harsh wind A history of other eye conditions or procedures that may weaken the cornea

Key Symptoms: Blurring or distortion of vision Increased sensitivity to light and glare Frequent changes in prescription glasses or contact lens needs Suppression of vision in one eye or difficulty seeing at night Development of a cone-shaped protrusion in the eye's corneal shape

Diagnosis Path: Diagnosis of stable keratoconus involves a comprehensive eye examination, including corneal topography or tomography, which maps the surface of the cornea to detect early or subtle changes in shape. These imaging techniques help determine if the keratoconus has remained unchanged over time, confirming its stability. The eye care professional might also perform slit-lamp exams and measure the thickness of the cornea using pachymetry.

Treatment Protocols: While stable keratoconus may not require immediate intervention, management options include various approaches to optimize vision and prevent progression. These include: - **Corrective lenses:** Glasses or soft contact lenses may be sufficient if eyesight is mildly affected. - **Rigid gas-permeable contact lenses:** These lenses provide a more regular corneal surface, improving vision. - **Corneal cross-linking:** A minimally invasive procedure that strengthens the corneal tissue to halt progression if there is any indication of future worsening. - **Surgical options:** In cases where contact lenses are not suitable, procedures such as intracorneal ring segments or, rarely, corneal transplant may be considered. Follow-up with an eye care professional is essential for monitoring the stability and health of the cornea.