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Rotating the Intraocular Lens to Prevent Posterior Capsular Opacification in Cataract Surgeries

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Intraocular lens calcification after keratoplasty.

Irmingard M Neuhann¹, Thomas F Neuhann, Jens M Rohrbach

¹Ophthalmology Department, Red Cross Hospital, Munich, Germany. dr.i.neuhann@neuhann.de

|September 27, 2012

Summary

Intraocular lens (IOL) calcification after keratoplasty is linked to inflammation and air injection, not specific IOL types. This finding aids in understanding and preventing post-keratoplasty IOL complications.

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Area of Science:

Ophthalmology
Biomaterials Science
Surgical Pathology

Background:

Calcification of intraocular lenses (IOLs) can occur after various ocular surgeries.
Understanding the factors contributing to IOL calcification post-keratoplasty is crucial for patient outcomes.

Purpose of the Study:

To investigate and report on the occurrence of intraocular lens (IOL) calcification following different types of keratoplasty procedures.
To identify potential contributing factors and characteristics of IOL calcification after corneal transplantation.

Main Methods:

Analysis of clinical data from patients who developed calcified IOLs post-keratoplasty.
Histochemical examination of explanted IOLs using alizarin red and von Kossa staining to detect calcium deposits.

Main Results:

IOL calcification was observed after Descemet stripping automated endothelial keratoplasty, deep anterior lamellar keratoplasty, and penetrating keratoplasty.
Calcification occurred in hydrophilic acrylic IOLs, irrespective of polymer source, with a median onset of 6.5 months post-surgery.
Histochemical analysis confirmed calcium deposits on the superficial optic material, associated with anterior chamber inflammation and air injection during surgery.

Conclusions:

IOL calcification post-keratoplasty appears multifactorial, not tied to specific IOL models or polymers.
Inflammation and air injection into the anterior chamber may play a role in mediating the calcification process.