Implantable collamer lens surgery in patients with primary iris and/or ciliary body cysts

Li, Zhen; Xu, Zhike; Wang, Yaqin; Liu, Qiang; Chen, Bin

doi:10.1186/s12886-018-0935-7

Cited by 21 publications

(19 citation statements)

References 19 publications

(17 reference statements)

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“…Additionally, the sample size of our study was larger (83 eyes vs. 46 eyes) than theirs, and the crystalline LT was easier to measure. To identify the presence of ciliary body cysts, UBM is an important preoperative examination before ICL implantation [ 18 , 44 ]. Therefore, our formula may be applied conveniently, without an additional anterior segment Optical Coherence Tomography (AS-OCT) examination.…”

Section: Discussionmentioning

confidence: 99%

Short‐term changes in and preoperative factors affecting vaulting after posterior chamber phakic Implantable Collamer Lens implantation

et al. 2021

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Background To describe the very early vault changes in the first month after Implantable Collamer Lens (ICL) implantation and to evaluate the effect of preoperative biometric factors on vault. Methods Eighty-three eyes from eighty-three subjects with complete data who met follow-up requirements were recruited in this retrospective study between May 2019 and March 2020. We quantitatively assessed the postoperative vault at 2 h, 1 day, 1 week, and 1 month following implantation. Associations between the postoperative vault and age, ICL size, spherical equivalent (SE), axial length (AL), central corneal thickness (CCT), flat keratometry (K), steep K, mean K, anterior chamber depth (ACD), crystalline lens thickness (LT), white-to-white (WTW) diameter obtained by three devices, horizontal and vertical sulcus-to-sulcus (STS) diameter, bright and dark pupil sizes (BPS and DPS) and DPS-BPS were investigated using Spearman’s correlation analysis and stepwise multiple regression analysis. Results The mean vault values at 2 h, 1 day, 1 week, and 1 month after ICL implantation were 672.05 ± 30.72, 389.15 ± 28.33, 517.23 ± 30.76 and 530.12 ± 30.22 μm, respectively. Significant differences were found in the vault values at 2 h, 1 day and 1 week after the operation. The ICL size (β = 0.942; p < 0.001), followed by horizontal STS (β = -0.517; p < 0.001), crystalline LT (β = -0.376; p < 0.001) and vertical STS (β = -0.257; p = 0.017), significantly influenced the vault at 1 month after the operation. The multiple regression equation was expressed as follows: central vault (µm) = -1369.05 + 657.121 × ICL size- 287.408 × horizontal STS − 432.497 × crystalline LT − 137.33 × vertical STS (adjusted R2 = 0.643). Conclusions After ICL implantation, the vault decreased and then increased, but it did not return to the vault value 2 h after surgery. The ICL size, horizontal and vertical STS and crystalline LT are key factors for predicting postoperative vaulting.

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Section: Discussionmentioning

confidence: 99%

Short‐term changes in and preoperative factors affecting vaulting after posterior chamber phakic Implantable Collamer Lens implantation

et al. 2021

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“…Post-operative NPACD, TPACD, NACA, and TACA were lower than pre-operative measurements in eyes with iris and/or ciliary body cysts in the present study. Li and associates ( 30 ) found no significant differences in post-operative AOD 500 and TIA between eyes with and without cysts. In Li's study, cysts were found predominantly in the inferior and temporal quadrants, while cysts were primarily located in the horizontal direction in the present study.…”

Section: Discussionmentioning

confidence: 94%

Peripheral Anterior Chamber Depth and Angle Measurements Using Pentacam After Implantation of Toric and Non-toric Implantable Collamer Lenses

Zhao¹,

Zhao

Yang

et al. 2021

Front. Med.

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Purpose: To evaluate the characteristics of peripheral anterior chamber measurements by Pentacam after posterior implantable collamer lenses (ICL) and toric ICL (TICL) with central hole (V4c) implantation.Methods: Prospective, non-randomized consecutive case series. Forty-six patients undergoing ICL implantation in one eye (Group A) and identically sized TICL in the contralateral eye (Group B) in the Refractive Surgery Center of Eye and ENT Hospital of Fudan University were prospectively included. According to ICL/TICL size, these eyes were further divided into four subgroups. Peripheral anterior chamber depth (PACD) and angle (ACA) in nasal and temporal sides were measured using Pentacam pre-operatively and 12-month post-operatively.Results: The safety indices were 1.34 ± 0.32 and 1.25 ± 0.16 and the efficacy indices were 1.20 ± 0.24 and 1.19 ± 0.19 for ICL and TICL groups, respectively. There was no significant difference in pre-operative PACD or ACA between the two groups. Post-operative PACD and ACA were significantly lower than pre-operative values. Variations of PACD and ACA of TICL group were significantly larger than those of ICL group. The change of ACA for 13.2 mm lenses was significantly larger than that of 12.6 mm lenses. Pre-operative CACD and vault were significantly associated with post-operative PACD, while pre-operative ACA and vault were significantly associated with post-operative ACA.Conclusions: Variations of PACD and ACA were greater in eyes after TICL (V4c) implantation compared with identically sized ICL (V4c) implantation and with larger size than smaller size lens implantation. Pre-operative anterior chamber structure and vault affect post-operative PACD and ACA.

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“…Previous studies on angle opening measurements in eyes undergoing ICL implantation are summarized in Table 3 [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. With regard to UBM measurements, Chung et al demonstrated that AOD500 and TIA were significantly smaller than preoperative values by 41.5% and 31.8%, respectively, 1 month postoperatively and that no significant progressive changes were observed thereafter [ 8 ].…”

Section: Discussionmentioning

confidence: 99%

“…Lim et al showed that the mean ratios of reduction of AOD500 and TIA were 27.32% and 28.41%, respectively, after ICL implantation in eyes with low anterior chamber depth (<2.8 mm) [ 11 ]. Li et al mentioned that the postoperative AOD500 and TIA showed a statistical reduction in ICL-V4c-implanted eyes having primary iris and/or ciliary body cysts [ 15 ]. With regard to AS-OCT measurements, Fernández-Vigo et al reported that considerable angle narrowing was detected 1 month postoperatively and that this narrowing remained stable at 3 months after ICL V4c implantation [ 12 ].…”

Section: Discussionmentioning

confidence: 99%

Effect of Angle Opening Parameters on Corneal Endothelial Cell Density and Intraocular Pressure after Posterior Chamber Phakic Intraocular Lens Implantation

Kamiya

Ando

Tsujisawa

et al. 2020

JCM

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This study aimed to investigate the time courses of angle opening parameters and the relationships of these with the corneal endothelial cell density (ECD) and the intraocular pressure (IOP) after posterior chamber phakic intraocular lens (Visian ICLTM, STAAR Surgical) implantation. We evaluated 116 eyes of 59 consecutive patients (mean age ± standard deviation, 34.0 ± 8.8 years) who underwent V5 implantable collamer lens (ICL) implantation. Preoperatively and 1 day, 1 week, and 1, 3, and 18 months postoperatively, we quantitatively measured the angle opening distance at 500 µm (AOD500), the trabecular-iris space area (TISA500), and the trabecular iris angle (TIA500), using anterior segment optical coherence tomography (CASIA 2, Tomey), and assessed the relationships of these measurements with ECD and IOP in ICL-implanted eyes. All angle parameters (AOD500, TISA500, and TIA500) significantly decreased 1 day postoperatively but remained stable thereafter. At 18 months postoperatively, we found no significant correlations of the angle parameters with ECD (Pearson correlation coefficient r = −0.108, p = 0.249 for AOD500; r = −0.162, p = 0.083 for TISA500; r = −0.022, p = 0.815 for TIA500) or between the angle parameters and IOP (r = −0.106, p = 0.256 for AOD500; r = −0.021, p = 0.826 for TISA500; r = −0.018, p = 0.850 for TIA500). The angle opening metrics significantly decreased immediately after ICL implantation but remained stable thereafter. Narrowing of the angle did not significantly affect ECD or IOP in ICL-implanted eyes during the 18-month postoperative period.

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Implantable collamer lens surgery in patients with primary iris and/or ciliary body cysts

Cited by 21 publications

References 19 publications

Short‐term changes in and preoperative factors affecting vaulting after posterior chamber phakic Implantable Collamer Lens implantation

Short‐term changes in and preoperative factors affecting vaulting after posterior chamber phakic Implantable Collamer Lens implantation

Peripheral Anterior Chamber Depth and Angle Measurements Using Pentacam After Implantation of Toric and Non-toric Implantable Collamer Lenses

Effect of Angle Opening Parameters on Corneal Endothelial Cell Density and Intraocular Pressure after Posterior Chamber Phakic Intraocular Lens Implantation

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