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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.

SUBMITTER: Yasa D

PROVIDER: S-EPMC7171658 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Rotational Stability of a New Posterior Chamber Toric Phakic Intraocular Lens.

Yaşa Dilek D Köse Bülent B Ağca Alper A

Journal of ophthalmology 20200409

<h4>Purpose</h4>To evaluate the refractive results and rotational stability of Eyecryl toric phakic intraocular lens (pIOL).<h4>Methods</h4>In this retrospective single-surgeon case series, manifest refraction, visual acuities, endothelial cell density (ECD), and pIOL rotation were evaluated over 6 months.<h4>Results</h4>43 eyes from 23 patients were included. At 6 months, the SE was within ±0.50<b> </b> <i>D</i> of emmetropia in 30 (70%) eyes and within ±1.00<b> </b> <i>D</i> of emmetropia in 3 ...[more]

PMID: 32351717

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Project description:BACKGROUND:A major focus of toric intraocular lens (IOL) implantation is the rotational stability, especially in the patients with long axial length (AL). In this study, we aimed to evaluate the clinical outcomes after implantation of TECNIS toric IOL in eyes with long AL and identify factors influencing their early-stage stability with preoperative corneal astigmatism. METHODS:The study population consisted of 64 eyes from 52 cataract patients, and these patients had preoperative corneal astigmatism between 1.0 and 3.7 diopters (D) and underwent phacoemulsification and TECNIS toric IOL implantation. Ophthalmic biological measurements were carried out preoperatively, including AL, anterior chamber depth (ACD), lens thickness (LT), vitreous length (VL), anterior chamber volume (ACV), sulcus-to-sulcus (STS) and keratometric value (K). Clinical examinations, including visual acuity, manifest refraction, keratometry, digital anterior segment photographs with pupillary dilation, were performed at 1 and 3?months after surgery. RESULTS:The mean best corrected distance visual acuity (BCDVA) was improved from 0.93?±?0.35 logarithms of the minimal angle of resolution (logMAR) preoperatively to 0.07?±?0.10 logMAR postoperatively at 3?months after surgery. The mean residual astigmatism (RAS) was 0.91?±?0.74D at 3?months, which was significantly decreased compared with the preoperative corneal astigmatism of 1.71?±?0.55 D. The mean absolute rotation of TECNIS toric IOL at 1 and 3?months was 7.42?±?11.32 degree (°) (0-79°) and 7.48?±?11.19°(0-79°), respectively. The mean area of capsulorhexis and the overlapped area between capsulorhexis and IOL optic intraoperatively was 21.04?±?3.30?mm2 and 7.40?±?2.87?mm2.A positive correlation was found between IOL rotation and the area of capsulorhexis (p?=?0.017) at 3?months after surgery. No correlation was found between IOL rotation and AL (p?=?0.876), ACD (p?=?0.387), LT (p?=?0.523), VL (p?=?0.546), ACV (p?=?0.480), STS (p?=?0.884), K1 (p?=?0.429), K2 (p?=?0.644), average of K1 and K2 (p?=?0.520), intraoperative IOL axial direction (p?=?0.396), preoperative corneal astigmatism (p?=?0.269) or the overlapped area between capsulorhexis and IOL optic intraoperatively (p?=?0.131) . CONCLUSIONS:The large CCC was a risk factor for toric IOL rotation. An appropriately smaller sized CCC was conducive to increase the rotational stability of TECNIS toric IOL implantation in cataract cases with long AL.

Dataset Information

Rotational Stability of a New Posterior Chamber Toric Phakic Intraocular Lens.

Publications

Rotational Stability of a New Posterior Chamber Toric Phakic Intraocular Lens.

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