Toric implantable collamer lens for keratoconus.
Keratoconus is a progressive non-inflammatory thinning of the cornea that induces myopia and irregular astigmatism and decreases the quality of vision due to monocular diplopia, halos, or ghost images. Keratoconus patients unfit for corneal procedures and intolerant to refractive correction by spectacles or contact lenses have been implanted toric posterior chamber phakic intraocular lenses (PC pIOLs) alone or combined with other surgical procedures to correct the refractive errors associated with keratoconus as an off label procedure with special informed consent from the patients. Several reports attest to the safety and efficacy of the procedure, though the associated corneal higher order aberrations would have an impact on the final visual quality.
Cataract and Refractive Lens Surgery Services, Narayana Nethralaya, Post-Graduate Institute of Ophthalmology, Bangalore, Karnataka, India.
Mathew Kurian
MK
Kummelil
M S
MS
Hemamalini
Ridhima
R
Bhagali
Koushik
K
Sargod
Somshekar
S
Nagappa
Rohit
R
Shetty
Bhujang K
BK
Shetty
D000328:Adult; D001251:Astigmatism / Q000209:etiology / Q000534:rehabilitation; D019781:Corneal Topography; D006801:Humans; D007640:Keratoconus / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D019654:Lens Implantation, Intraocular; D009216:Myopia / Q000209:etiology / Q000534:rehabilitation; D054120:Phakic Intraocular Lenses; D012029:Refraction, Ocular / Q000502:physiology; D041623:Tomography, Optical Coherence; D014792:Visual Acuity / Q000502:physiology