Collagen copolymer toric phakic intraocular lens for residual myopic astigmatism after intrastromal corneal ring segment implantation and corneal collagen crosslinking in a 3-stage procedure for keratoconus

Abstract

A combined 3-stage-approach keratoconus treatment comprising ICRS implantation followed by CXL and then toric pIOL implantation was effective in improving functional vision and reducing disease progression. Longer term studies are required for further evaluation and comparison with other methods.

Toric implantable collamer lens for keratoconus

“…A decentered cone may be defined as the location of the highest point of elevation away from the central 3.0 mm and/or more than 50% of the cone outside the central 3.0 mm zone on topography, which may be centralized by the use of adjunct intracorneal ring segments (ICRS). [78]…”

Implantable Collamer Lens (ICL) Sizing in Advanced Keratoconus

“…To the best of our knowledge there are isolated reports showing favourable results of ICL in advanced keratoconus. [11][12][13] Kummeil et al 12 included 10 eyes of 7 patients out of which 3 patients had grade 3 keratoconus. Another study by Park et al 13 described successful visual rehabilitation in a case of stable advanced keratoconus with K values 58.4/48.7@117.…”

“…Very few studies exist reporting the outcomes of ICL alone or in combination with CXL in cases of advanced keratoconus. [11][12][13] To the best of our knowledge, the complication of inadvertently large ICL calculation in advanced keratoconus leading to exchange has not been reported.…”

Keratoconus: How Best to Treat it?

“…Overlying corneal melt 20,21 Charu Khurana: Are there any special diffi culties encountered in phakic IOL surgery in keratoconus patients? What parameters need special att ention?…”

“…Improvements maybe bett er than possible with glasses but less than those with contact lenses. 21,22 Charu Khurana: How oft en do you perform DALK/ PK in your keratoconus patients?…”