CHARACTERIZING INTRAOCULAR LENS POSITION, STABILITY, AND IRIS MOBILITY IN EYES THAT HAVE UNDERGONE SUTURELESS INTRASCLERAL HAPTIC FIXATION.

PURPOSE: To characterize intraocular lenses (IOL) position, IOL stability and iris dynamics in eyes with sutureless intrascleral haptic fixated intraocular lenses (SIS-IOLs).

METHODS

This nonconsecutive observational study used ultrasound biomicroscopy to better characterize SIS-IOLs. We included individuals who had SIS-IOL surgery between October 2014 and October 2018. We excluded individuals younger than18 years and those with active uveitis, advanced glaucoma, known ocular syndrome(s), and those with repeated SIS-IOL dislocations before the time of the ultrasound evaluation. Serial ultrasound biomicroscopy were performed in both the seated/supine positions and IOL position and stability were described as our primary outcome. As a secondary outcome, iris mobility was evaluated through dynamic ultrasound biomicroscopy in both the SIS-IOL and posterior chamber IOL (surgery between 2001 and 2019) groups.

RESULTS

Analysis of ultrasound biomicroscopy of 22 SIS-IOLs and 10 posterior chamber IOLs, showed that on average, SIS-IOLs were positioned significantly more posteriorly than standard posterior chamber IOLs (aqueous depth = 0.59 vs. 0.48 mm; P < 0.00006)). Over time, SIS-IOLs demonstrated a slight posterior displacement of the IOL (0.18 mm shift posteriorly). Finally, in eyes with SIS-IOLs there was a high degree of iris mobility when compared with the posterior chamber IOL group (Fleiss Kappa 0.887).

CONCLUSION

This study provides ultrasound-based evidence demonstrating a more posterior IOL position with increased iris mobility in eyes with an SIS-IOL. These data provide valuable information which may inform surgeons as they consider IOL selection and surgical technique.