An irregular cornea/astigmatism

Irregular Astigmatism is the most common form of irregular Cornea. Irregular astigmatism can be the result of an illness, an accident or eye surgery. Additional irruglarities may also be present due to Corneal scarring. These can cause major limitations in vision and lead to a reduced quality of life.

Causes of irregular cornea:

  • Infectious diseases with corneal scars
  • Extremely dry eyes combined with the "scrubbing" motion of the eyelids
  • surgery, medical procedures (e.g. Cataract removal) or aesthetic reason (LASIK and PRK)
  • Conjunctival degenerations such as Pterygium

Types of corneal surgery

  • Myopia (goto LASIK)
  • Photorefractive keratectomy (PRK),
  • corneal transplant or corneal grafting in Keratoconus , dystrophies, degeneration and scarring
  • corneal transplant or Corneal grafting in severe cases of structural damage for the restoration of corneal integrity.
  • Therapeutic transplantation (removal of infected corneal tissue)

Contact lenses for irregular cornea

Traditionally special RGP contact lenses are recommended as a first choice in case of irregular corneas  after transplantation or grafting. Due to modern manufacturing technologies combined with advanced material technologies it is possible, now, to considere soft contact lenses as a viable alternative.
For example the classic RGP scleral lens which overlies only  the conjunctiva to "bridge" the cornea entirely;
customized soft lenses can now be adjusted as well due to a nano-metric level. The made to measure lens-surface can modellise nearly all irregularities of cornea. With a high oxygen permeable material like silicone hydrogel the possibilities for greater patient satisfaction and improved clinical results cannot be ignored.