A New Technique For Visualization And Analysis Of Glistenings In Intraocular Lenses.

The study aims to establish a new method for assessing Glistenings in IOLs by using a newly developed and produced holder for IOLs, which enables the analysis of IOLs under controlled lighting conditions, allows for various magnifications and reduces artifacts.  

David J Apple Lab., Dept. of Ophthalmology, University of Heidelberg, Germany 

Ongoing study. The investigation was conducted in a controlled laboratory setting, ensuring precise temperature conditions for Glistenings induction and subsequent analysis using advanced microscopy equipment. A new holder for IOL was developed and produced. In total 28 IOLs underwent Glistenings induction at different temperatures for 24 hours (45°C, 35°C,25°C, 55°C) followed by stabilization in a 37°C water bath for 2 hours. IOLs were assessed under a microscope at two different time points. At each setting, Glistenings were counted utilizing ImageJ (Version 1.53t) software. Intraclass Correlations (ICC) to estimate interrater reliability were computed in SPSS (V.29.0).

The study established an ICC of 0.896 (95% CI) for the newly offered method. Utilizing 100x and 200x magnification provided optimal visualization of Glistenings, revealing distinct sizes and shapes within the same IOL. Lighting conditions were standardized to ensure reproducibility for each examination.

The new method demonstrated statistically significant and very high ICC (0.896), indicating that it is highly repeatable. It yields more detailed and accurate representations of Glistenings in IOLs. The standardized lighting conditions enhance reproducibility and minimize imaging artifacts, offering a significant improvement over the previous technique.