Clinical Ophthalmology (Dec 2022)
Descriptive Analysis of Footplate Position After Myopic Implantable Collamer Lens Implantation Using a Very High-Frequency Ultrasound Robotic Scanner
Abstract
Roger Zaldivar,1 Roberto Zaldivar,1 Pablo Adamek,1 Gabriel Quintero,1 Alejandro Cerviño2 1Instituto Zaldívar, Mendoza, Argentina; 2Department of Optics & Optometry & Vision Sciences, University of Valencia, Valencia, SpainCorrespondence: Alejandro Cerviño, Department of Optics & Optometry & Vision Science, University of Valencia, C / Dr. Moliner, 50. Burjassot, Valencia, 46100, Spain, Tel +34 963 544 852, Email [email protected]: To assess the position of the haptics of the implantable collamer lens (ICL) in myopic eyes using a high-frequency ultrasound robotic scanner.Methods: This was a prospective, single-arm, observational study carried out at the Instituto Zaldivar SA (Mendoza, Argentina) in a sample of 52 eyes who have been submitted to successful ICL implantation prior to enrollment. Images of the eyes were obtained using a very-high frequency digital ultrasound robotic scanner (VHFDU) to establish the position of the ICL in the posterior chamber and its relation to the ciliary sulcus. New parameters for lens position analysis were also described.Results: In 81% of cases (42 eyes), the ICL rests on the ciliary body (CB) in both temporal and nasal sides, being slightly lower than 6% (3 eyes) those that rest on the sulcus in both sides, with significant correlations between ICL position and vault values (p< 0.05). Cases in which the ICL position was CB-CB yielded central vault values across the whole range determined within the sample, but most of the eyes where the ICL rests on both the sulcus in one side and the CB in the other yield greater central vault values. Correlation was significant between ICL position and retroposition distance on the temporal side (Spearman’s rho − 0.487, p< 0.001). A significant but weaker correlation was also found between ICL position and retroiridian space (p< 0.05).Conclusion: ICL for myopia footplates tend to locate outside of the sulcus in a significant percentage of patients after successful implantation. VHFDU assessment in eyes implanted with an ICL to properly study the lens footplate position and posterior anatomical relations provides important additional information besides post-surgery vault.Keywords: myopia, implantable collamer lens, ultrasound biometry, high-frequency, ciliary sulcus
