Ferrara Intrastromal Corneal Ring Segment in Pellucid Marginal Degeneration
Pellucid marginal degeneration is a slowly progressive corneal ectatic condition often leading to severe visual impairment of working age people.
The peripheral corneal thinning location requires a large graft size, eventually a peripheral lamellar crescentic keratoplasty followed by a central penetrating keratoplasty.
Besides surgically more challenging, corneal transplantation is associated to increased risk of vascularization and rejection.
At a certain stage, ICRS implantation can be a good option to restore good corrected visual acuity, deter progression and postpone or avoid corneal graft challenges and complications.
Akaishi L, Tzelikis PF, Raber IM. Ferrara intracorneal ring implantation and cataract surgery for the correction of pellucid marginal corneal degeneration. J Cataract Refract Surg. 2004 Nov;30(11):2427-30.