scholarly journals Toric Implantable Collamer Lens for the Treatment of Myopic Astigmatism

2021 ◽  
Vol Volume 15 ◽  
pp. 2893-2906
Author(s):  
Majid Moshirfar ◽  
Nour Bundogji ◽  
Alyson N Tukan ◽  
James H Ellis ◽  
Shannon E McCabe ◽  
...  
Keyword(s):  
Implantable Collamer Lens ◽  
Myopic Astigmatism

scholarly journals Posterior-Chamber Phakic Intraocular Lens Implantation in Patients over 40 Years of Age

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Pedro Tañá-Rivero ◽  
Francisco Pastor-Pascual ◽  
Marceliano Crespo ◽  
José L. Rodríguez-Prats ◽  
José J. Muñoz-Tomás ◽  
...  
Keyword(s):  
Crystalline Lens ◽  
Posterior Chamber ◽  
Spherical Equivalent ◽  
Efficacy And Safety ◽  
Phakic Intraocular Lens ◽  
Implantable Collamer Lens ◽  
Lens Implantation ◽  
Over 40 Years ◽  
Myopic Astigmatism

Purpose. To assess the efficacy, safety, and predictability of the Visian Implantable Collamer Lens (ICL) model having a central port in patients over 40 years of age. Methods. This study included 33 eyes from 21 patients who underwent V4c ICL implantation for the correction of myopia and myopic astigmatism. We assessed uncorrected (UDVA) and corrected (CDVA) distance visual acuity, refraction, intraocular pressure (IOP), endothelial cell density (ECD), vault, and adverse events occurring over a 1-year period. Results. Mean age of the patients at the time of implantation was 43.52 ± 4.49 years (range: 40 to 56 years). Efficacy and safety indexes were 1 and 1.09, respectively. Surgical outcomes for CDVA were as follows: no eye lost any lines, 19 eyes (57.58%) showed no CDVA changes, 7 eyes (21.21%) gained 1 line, 4 eyes (12.12%) gained 2 lines, and 3 eyes (9.09%) gained ≥3 lines. Mean postoperative spherical equivalent (SE) was −0.09 ± 0.47 D. A total of 29 eyes (87.8%) were within ±0.50 D and 31 eyes (93.9%) were within ±1.00 D of the desired SE. At 1-year, mean IOP was 15.27 ± 3.03 mmHg (range: 9 to 20 mmHg, p=0.12 pre vs. post) and mean ECD was 2516 ± 234 cells/mm2 (p=0.29 pre vs. post). Mean postoperative vault was 320 ± 136 μm, with 201–300 μm being the most prevalent vault range for 9 eyes (31.03%). None of the eyes showed a vault >701 μm. There were neither intraoperative nor postoperative complications; in fact, all ICL implantation procedures were uneventful. Conclusions. Our study’s findings support the use of this lens in patients over 40 years of age. A long follow-up period is advisable to monitor ICL position relative to the crystalline lens.

Vector analysis of small incision lenticule extraction and toric implantable collamer lens implantation for astigmatism correction

2020 ◽  
pp. 112067212093060
Author(s):  
Ting Wan ◽  
Houfa Yin ◽  
Zhiyi Wu ◽  
Yabo Yang
Keyword(s):  
Vector Analysis ◽  
Small Incision Lenticule Extraction ◽  
Implantable Collamer Lens ◽  
Small Incision ◽  
Astigmatism Correction ◽  
Induced Astigmatism ◽  
Lenticule Extraction ◽  
The Difference ◽  
Surgically Induced ◽  
Myopic Astigmatism

Objectives: To compare the efficacy of small incision lenticule extraction (SMILE) and toric implantable collamer lens (TICL) implantation for myopic astigmatism correction using vector analysis. Methods: In this retrospective study, 171 eyes of 171 patients with cylinder ⩾1.0 diopters (D) were recruited, with 97 eyes underwent SMILE and 74 eyes underwent TICL implantation. Preoperative and 3-months postoperative visual and refractive results were examined. The astigmatism correction, graded by the degree of preoperative cylinder was compared between two groups using vector analysis. Results: At 3-months postoperatively, the residual cylinder was −0.10 ± 0.21 D in the SMILE group and −0.30 ± 0.32 D in the TCL group ( p < 0.05). Furthermore, 98% and 85% of eyes had the cylinder within ±0.5 D in the SMILE and TICL group, respectively. The vector analysis revealed similar target induced astigmatism vector in two groups. However, the difference vector, magnitude of error, angle of error, and index of success were significantly higher (0.30 ± 0.32 D, −0.19 ± 0.25, −2° ± 4.35°, and 0.16 ± 0.17 D, respectively) in the TICL group than the values in the SMILE group (0.10 ± 0.21 D, −0.05 ± 0.20, −0.03° ± 2.13°, and 0.05 ± 0.12, respectively), regardless of the degree of preoperative cylinder (all p < 0.05). For preoperative cylinder < 2.0 D, surgically induced astigmatism vector and correction index in the SMILE group were higher than those in the TICL group ( p < 0.05). Conclusion: Both SMILE and TICL implantation are effective techniques for myopic astigmatism correction. However, the accuracy of correction in the magnitude and axis of astigmatism with SMILE was better than that achieved with TICL implantation.

Comparison of the Toric Implantable Collamer Lens and Bioptics for Myopic Astigmatism

2010 ◽  
Vol 27 (2) ◽  
pp. 91-97 ◽  
Author(s):  
Sung-Ho Choi ◽  
Myoung-Ok Lee ◽  
Eui-Sang Chung ◽  
Tae-Young Chung
Keyword(s):  
Implantable Collamer Lens ◽  
Myopic Astigmatism

Visian Toric Implantable Collamer Lens for Correction of Compound Myopic Astigmatism

2010 ◽  
Vol 26 (4) ◽  
pp. 251-258 ◽  
Author(s):  
Daniel Elies ◽  
Tirso Alonso ◽  
Javier Puig ◽  
Oscar Gris ◽  
José Luís Güell ◽  
...  
Keyword(s):  
Implantable Collamer Lens ◽  
Myopic Astigmatism

Myopic astigmatism correction: comparison of a Toric Implantable Collamer Lens and a bioptics technique by an adaptive optics visual simulator

2013 ◽  
Vol 33 (2) ◽  
pp. 114-122 ◽  
Author(s):  
Cari Pérez-Vives ◽  
Alberto Domínguez-Vicent ◽  
David Madrid-Costa ◽  
Teresa Ferrer-Blasco ◽  
Robert Montés-Micó
Keyword(s):  
Adaptive Optics ◽  
Implantable Collamer Lens ◽  
Astigmatism Correction ◽  
Myopic Astigmatism

scholarly journals Clinical Effect and Rotational Stability of TICL in the Treatment of Myopic Astigmatism

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Manhui Zhu ◽  
Linling Zhu ◽  
Qiujian Zhu ◽  
Cailian Xu ◽  
Peng Yu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Visual Acuity ◽  
Rotational Stability ◽  
Spherical Equivalent ◽  
Implantable Collamer Lens ◽  
Manifest Refraction ◽  
Efficacy Index ◽  
The Mean ◽  
Myopic Astigmatism ◽  
High Myopic Astigmatism

Purpose. To investigate the clinical outcomes and possible risk factors associated with rotational stability after the implantation of a V4c toric implantable Collamer lens (TICL) for the correction of moderate to high myopic astigmatism. Methods. A total of 112 eyes of 66 patients with moderate to high myopic astigmatism underwent TICL implantation. All patients were followed up for more than 1 year. The uncorrected and best-corrected visual acuity (UCVA and BCVA), astigmatism and spherical equivalent, intraocular pressure, vault, endothelial cell morphometry, and rotation of the TICL axis were assessed at l day, 1 week, 1 month, 3 months, 6 months, and 12 months postoperatively. Postoperative rotation was defined as the angle between the intended axis and the achieved axis. Regression analysis was used to investigate the possible risk factors for TICL rotation postoperatively. Results. The mean efficacy index and safety index 12 months postoperatively were 1.03 ± 0.09 and 1.05 ± 0.10, respectively. All patients had the same or better visual acuity than preoperatively. The mean astigmatism value decreased from −1.86 ± 0.79 D preoperatively to −0.37 ± 0.35 D. The mean absolute axis deviation of the TICL at the last follow-up was 2.75 ± 2.04° (range, 0°∼11°). The mean manifest refraction spherical equivalent (MRSE) changed from -9.04 ± 2.67 D preoperatively to −0.67 ± 0.51 D postoperatively. The logistic regression demonstrated that the absolute degree of TICL rotation had a significant association with the fixation angle of the TICL and the size of the lens ( P = 0.003 , P = 0.026 , resp.). Conclusion. The results of our study support that TICL implantation is safe, effective, and predictable in the treatment of moderate to high myopic astigmatism, with relatively good postoperative rotational stability.

Toric implantable collamer lens for moderate to high myopic astigmatism: 3-year follow-up

2012 ◽  
Vol 251 (5) ◽  
pp. 1413-1422 ◽  
Author(s):  
Esin Sogutlu Sari ◽  
David P. Pinero ◽  
Anil Kubaloglu ◽  
Pinar Sorgun Evcili ◽  
Arif Koytak ◽  
...  
Keyword(s):  
Implantable Collamer Lens ◽  
Myopic Astigmatism ◽  
High Myopic Astigmatism
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