Original articleEffect of Accommodation on Vaulting and Movement of Posterior Chamber Phakic Lenses in Eyes With Implantable Collamer Lenses
Section snippets
Design
This retrospective, comparative observational case series was performed with the approval of the Institutional Review Board of Yonsei University College of Medicine (Seoul, South Korea). All study conduct adhered to the tenets of the Declaration of Helsinki and followed good clinical practices. All patients provided written informed consent to allow their medical information to be included in study analyses.
Patients
Patients were included in analyses if they were older than 20 years of age and had
Results
A total of 86 eyes of 44 patients (32 women, 12 men) who underwent ICL implantation were ultimately included in analyses. All subjects were myopic and had a mean SE of −9.65 ± 2.42 D (range: −5.12 to −15.94 D). The V4 ICL was implanted into 35 eyes of 18 patients and the V4c ICL was implanted into 51 eyes of 26 patients. Table 1 summarizes patient demographic data and ocular characteristics before and 3 months after surgery. Mean ICL power was −13.0 ± 3.4 D (range, −7.0 to −22.0 D) in both
Discussion
We measured postoperative ICL vaulting, ACD, endo-ICL distance, and pupil size in both the nonaccommodative and accommodative states in eyes implanted with either the V4 or V4c ICL. No significant change in postoperative vaulting was found during accommodation within each ICL group. Additionally, vaulting was not significantly different between ICL groups in either the accommodative or nonaccommodative states. We did observe significant decreases in ACD, endo-ICL distance, and pupil size during
Hun Lee, MD, is currently Assistant professor of Department of Ophthalmology in Catholic Kwandong University College of Medicine, International St. Mary's Hospital, Incheon, South Korea. He graduated from Yonsei University College of Medicine in 2006, where he completed his ophthalmology residency in 2011 and corneal fellowship in 2015. His research interests are visual quality and refractive error, including cataract and refractive surgery.
References (28)
- et al.
Implantable contact lens for moderate to high myopia: phase 1 FDA clinical study with 6 month follow-up
J Cataract Refract Surg
(1998) - et al.
Implantable contact lens for high myopia
J Cataract Refract Surg
(2002) - et al.
Long-term changes in posterior chamber phakic intraocular collamer lens vaulting in myopic patients
Ophthalmology
(2010) - et al.
Phakic posterior chamber intraocular lens for high myopia
J Cataract Refract Surg
(2004) - et al.
Implantable contact lens for moderate to high myopia: relationship of vaulting to cataract formation
J Cataract Refract Surg
(2003) - et al.
Pigmentary dispersion syndrome induced by a posterior chamber phakic refractive lens
Am J Ophthalmol
(2001) - et al.
Metaanalysis of cataract development after phakic intraocular lens surgery
J Cataract Refract Surg
(2008) - et al.
Ultrasound biomicroscopy of anterior segment accommodative changes with posterior chamber phakic intraocular lens in high myopia
Ophthalmology
(2012) - et al.
Comparative study of 2 types of implantable collamer lenses, 1 with and 1 without a central artificial hole
Am J Ophthalmol
(2014) - et al.
Clinical outcomes after implantation of a posterior chamber collagen copolymer phakic intraocular lens with a central hole for myopic correction
J Cataract Refract Surg
(2013)
Vaulting of myopic and toric Implantable Collamer Lenses during accommodation measured with Visante optical coherence tomography
Ophthalmology
Effect of accommodation and pupil size on the movement of a posterior chamber lens in the phakic eye
Ophthalmology
Static and dynamic analysis of the anterior segment with optical coherence tomography
J Cataract Refract Surg
Change in shape of the aging human crystalline lens with accommodation
Vision Res
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2021, Journal Francais d'OphtalmologieCitation Excerpt :Interestingly, those authors also found an increased lens thickness, shortening of the ACD, and a small pupil constriction, all of which may contribute to a decrease in vault, but also a forward movement of the ICL to the endothelium, which could counteract that decrease. Several studies have found similar changes in the ACD, pupil [11,15,16] and forward movement of the ICL [15,16], which led either to a non-significant decrease in vault [11,15] or no change [16]. Interestingly, as González-López et al. have reported, although the ICL vault has traditionally been considered a static parameter, it is in fact fully dynamic, varying continuously with the natural movements of the iris throughout the day [10].
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Hun Lee, MD, is currently Assistant professor of Department of Ophthalmology in Catholic Kwandong University College of Medicine, International St. Mary's Hospital, Incheon, South Korea. He graduated from Yonsei University College of Medicine in 2006, where he completed his ophthalmology residency in 2011 and corneal fellowship in 2015. His research interests are visual quality and refractive error, including cataract and refractive surgery.