Rotational Stability of a New Posterior Chamber Toric Phakic Intraocular Lens

Abstract

Purpose. To evaluate the refractive results and rotational stability of Eyecryl toric phakic intraocular lens (pIOL). Methods. In this retrospective single-surgeon case series, manifest refraction, visual acuities, endothelial cell density (ECD), and pIOL rotation were evaluated over 6 months. Results. 43 eyes from 23 patients were included. At 6 months, the SE was within ±0.50 D of emmetropia in 30 (70%) eyes and within ±1.00 D of emmetropia in 39 (91%) eyes. The efficacy and safety indices were 1.25 ± 0.38 and 1.41 ± 0.34, respectively. Mean ECD was 2719 ± 296 cells/mm2 at the preoperative visit and 2779.42 ± 422 cells/mm2 at the 6-month visit (p>0.05). The mean value of absolute axis orientation error was 4.95 ± 5.28°. Mean absolute change in axis orientation between visits was less than 3° for all visit intervals. Ninety percent or more of lenses were found to rotate 5° or less between all visit intervals. None of the patients experienced a vision-threatening complication, and no patient required secondary IOL repositioning. Conclusion. The pIOL appears to effectively reduce subjective manifest astigmatism and provide good visual acuity. Its position was found to be stable throughout the follow-up.

Three-year experience of posterior chamber phakic intraocular lens implantation in the high myopia correction

“…Критерии включения: в соответствии с существующими рекомендациями [8][9][10]: миопия выше -9,0 D (до -25,0 D); миопия выше -3,0 D при наличии противопоказаний к эксимерлазерной коррекции; гиперметропия более +6,0 D (до 16,0 D); астигматизм до 6,0 D; глубина передней камеры глаза (ACDendo) при использовании переднекамерных линз не менее 3,0 мм, при использовании заднекамерных линз не менее 2,8 мм; плотность эндотелиальных клеток роговицы не менее 2000 клеток/мм 2…”

“…Плотность эндотелиальных клеток в нашем исследовании через 3 года после операции уменьшилась в среднем на 0,09%. По данным ряда авторов, этот показатель уменьшается в среднем на 4-5% [4,7,9,16,21].…”

“…. D. Yasa et al[9] обнаружили, что у 90% глаз заднекамерные акриловые ФИОЛ поворачиваются ме-При этом изменение ориентации ФИОЛ до 10° пациенты не замечали. Таким образом, имплантация ФИОЛ безопасна и эффективна в целях коррекции миопии высокой степен.…”

Long-term results of a new posterior chamber phakic intraocular lens in patients with high myopia: 5-year results

“…Although a limited number of previous studies have reported the refractive predictability and safety of the Eyecryl PC pIOL, the mean follow-up in the longest series was 3 years. [9][10][11][12][13][14][15] The goal of the study was to assess the long-term efficacy and safety of Eyecryl posterior chamber spherical pIOL implantation in individuals with high myopia.…”

Evaluation of Visual Outcome of 2 Phakic Posterior Chamber Implantable Lenses in High Myopia: A Comparative Study

“…Numerous manufacturers have introduced economically viable, biocompatible alternatives such as hydrophilic acrylic-based foldable PIOLs such as implantable phakic contact lens (IPCL; Care Group, India), Eyecryl PIOL (Biotech Vision Care, Ahmedabad, India), and refractive implantable lens (RIL; Appasamy, Chennai, India). 2,[6][7][8][9] A couple of studies report good outcome in correcting refractive error with these hydrophilic acrylic implants. 8,9 The RIL has a meniscus design with an overall size of 11.5 to 13.25 mm and an optic size of 4.5 to 5.8 mm and provides a treatment range from +10 to 224 diopter (D).…”