Sulcus Positioning Of The Eyecryl Phakic Intraocular Lens Assessed By Ultrasound Biomicroscopy: A Ubm-Based Analysis Of Haptic Placement
Published 2026 - 44th Congress of the ESCRS
Reference: PP07.03 | Type: Free paper | DOI: 10.82333/mga4-aq54
Authors: Mr Arturo Corroto Cuadrado 1 , Dr Jose Lamarca Mateu* 2 , Dr Nuria Cintas 2
1CLINICAL STUDIES,BIOTECH HEALTHCARE,MADRID,Spain, 2Opthalmology,CEO Barraquer,BARCELONA,Spain
Purpose
To evaluate the anatomical positioning of EYECRYL phakic posterior chamber intraocular lens (pIOL) haptics using ultrasound biomicroscopy (UBM), classifying placement into three categories: ideal sulcus, ciliary sulcus (posterior), and sulcus-ciliary body (SC–CB) transition zone.
Setting
Retrospective observational study conducted at CEO Barraquer, Barcelona, Spain.
Methods
A retrospective observational study was conducted at Institut Barraquer, Barcelona. A total of 142 haptics from eyes implanted with the EYECRYL phakic IOL were assessed by high-resolution UBM imaging (Quantel Medical). Each haptic was independently classified as: (1) ideal sulcus positioning, (2) ciliary sulcus (posterior displacement), or (3) sulcus–ciliary body transition. Additionally, mixed placement patterns — defined as asymmetric positioning between both haptics of the same lens — were identified and reported. Cases of sulcus cysts were documented and evaluated for their potential impact on lens stability, centration, and rotation.
Results
Of the 142 haptics evaluated, 91 (64.1%) were located in the ideal sulcus position, 43 (30.3%) showed posterior displacement into the ciliary sulcus, and 8 (5.6%) were positioned at the SC–CB transition zone. Mixed positioning patterns were detected in a subgroup of cases, where one haptic rested in the ideal sulcus while the contralateral haptic was displaced into the ciliary sulcus. Three eyes presented sulcus cysts at the haptic site; none of these cases showed evidence of lens rotation, decentration, or any other clinically relevant complication.
Conclusions
UBM imaging is a valuable tool for assessing EYECRYL phakic IOL haptic placement. The majority of haptics were found in the ideal sulcus position; however, a significant proportion showed posterior displacement. Mixed positioning patterns and sulcus cysts were occasionally observed, without adverse effects on lens performance. These findings highlight the importance of postoperative anatomical monitoring of phakic IOLs and may have implications for surgical planning and long-term follow-up protocols