The disorders included in Corneal Ectasia are:
– Keratoconus (progressive, bilateral, asymmetric, non-inflammatory disease, consists of stromal weakening and thinning resulting in distortion of corneal surface)
– Keratoglobus (rare non-inflammatory disorder, characterized by globular protrusion of the corneal along with its generalized thinning)
– Pellucid Marginal Degeneration (bilateral non-inflammatory disorder, characterized by thinning of the cornea in inferior part in the form of a peripheral band)
– Posterior Keratoconus (usually congenital, unilateral and a rare condition, resulting in thinning of interior surface of the cornea in a non-progressive way. The anterior curvature remains normal usually)
– Post-LASIK Ectasia (post surgical complication of LASIK eye refractive surgery)
– Terrien’s Marginal Degeneration (non-inflammatory, slow progression, painless, unilateral or asymmetrically bilateral disorder of thinning of corneal stroma in the peripheral region)
Treatment of corneal ectasia depends on the exact disease and the condition of individual patient including contact lenses, corneal collagen cross-linking, PVR PROSE Treatment and corneal transplant.
PVR PROSE TREATMENT for Corneal Ectasia
PVR PROSE Treatment (prosthetic replacement of the ocular surface ecosystem) uses fabricated and custom designed prosthetic devices depending upon individual cases. They are helpful in restoring vision, supporting in corneal healing and improving overall quality of life of complex corneal diseases patients.
A study published in 2012 on PROSE Treatment of corneal ectasia concluded that all the candidates selected for the study could be fitted with PROSE devices. The treatment results were measured after around 6 months and it was found that the ability to achieve satisfactory fit, impact on visual acuity and visual function was improved, showing a high success rate for the treatment.
PVR PROSE Treatment can help patients avoid penetrating keratoplasty for corneal ectasia management and also useful for patients who can’t wear conventional contact lenses.