Stability and visual outcomes yielded by three intraocular trifocal lenses with same optical zone design but differing material or toricity

2018 ◽  
Vol 29 (4) ◽  
pp. 417-425 ◽  
Author(s):  
Francisco Poyales ◽  
Nuria Garzón ◽  
Daniel Pizarro ◽  
Santiago Cobreces ◽  
Adolfo Hernández
Keyword(s):  
Intraocular Lens ◽  
Intraocular Lenses ◽  
Rotational Stability ◽  
Slit Lamp ◽  
Spherical Lens ◽  
Visual Outcomes ◽  
Loop Design ◽  
Optical Zone ◽  
Processing Techniques ◽  
Visual Results

Purpose: To compare rotational stability, centration and visual outcomes provided by three trifocal lens models that have the same optical zone design but different material, composition, and/or toricity. Methods: The study included 78 patients with symmetric bilateral intraocular lens implantation. The lenses under evaluation were trifocal intraocular lenses made of hydrophilic acrylic material: a spherical lens 26% hydrophilic acrylic (POD FineVision), a similar lens but having a toric design (POD Toric FineVision), and a trifocal lens 25% hydrophilic acrylic material (FineVision/MicroF). Moreover, the lenses share the same optical zone design. The lenses’ rotational stability and centration were measured by means of the PIOLET software, which relies on recording and image processing techniques to determine lens rotation and centration based on slit-lamp images. We also assessed patients’ visual quality by means of 25, 40, and 80 cm VA tests. Results: The best centration results were achieved with the POD Toric FineVision model, although the differences were not statistically significant. As for lens rotation, it was below 5° in all cases under study. Regarding VA, all subjects attained at least 0.3 logMAR for far distance uncorrected VA, at 80 cm VA was about 0.2 logMAR, at 40 cm it was above 0.15 logMAR, and at 25 cm it was about 0.3 logMAR for both lens types. Conclusion: All three intraocular lens models yield excellent visual results at far, near as well as intermediate distances. The POD FineVision and POD Toric FineVision models, with double C-loop design, yielded the best results centration-wise and rotation-wise. Differences had no clinical relevance.

Refractive and Visual Outcomes and Rotational Stability of Toric Intraocular Lenses in Eyes With and Without Previous Ocular Surgeries: A Longitudinal Study

2019 ◽  
Vol 35 (12) ◽  
pp. 781-788 ◽  
Author(s):  
Osama M. Mustafa ◽  
Christina Prescott ◽  
Fares Alsaleh ◽  
Daliya Dzhaber ◽  
Yassine J. Daoud
Keyword(s):  
Longitudinal Study ◽  
Intraocular Lenses ◽  
Rotational Stability ◽  
Visual Outcomes

scholarly journals Method to quantify the decentration of the multifocal intraocular lenses in relation to the visual axis

2018 ◽  
Vol 17 (4) ◽  
pp. 117-119
Author(s):  
Fernando Eduardo Polit
Keyword(s):  
Intraocular Lens ◽  
Qualitative Method ◽  
Visual Quality ◽  
Intraocular Lenses ◽  
Slit Lamp ◽  
Visual Axis ◽  
Light Reflex ◽  
Multifocal Intraocular Lenses ◽  
Real Value ◽  
Slit Lamp Biomicroscopy

Since position and centration have shown to affect the effectiveness of multifocal intraocular lenses (MFIOLs), some authors have proposed using the "coaxially sighted IOL light reflex" as a landmark to allow consistent centration of MFIOLs. Postoperatively, assessing the location of the intraocular lens with respect to the visual axis is also important. Centration of the MFIOLs can be identified postoperatively by slit lamp biomicroscopy, but it is still a qualitative method. The Nidek OPD Scan III is used. The instrument obtains retro illumination images, which allows the observation of the diffractive rings of the multifocal intraocular lenses implanted following phacoemulsification. The retro illumination image describes the location of the visual axis (white cross with blue borders +), the center of the photopic (pink cross) and mesopic (turquoise cross) pupil, quantifies the distance between the center of the pupil and the visual axis, and places the visual axis in degrees. It is attempted to match the rings of the lens with that of the acetate grid. Once the best possible equidistance between the lens and grid rings has been achieved. This method can be useful to be able to have reference of a real value of decentration of the lenses and thus have a surgical plan and try to center the lenses. We are also creating a technique to properly center the lenses, in addition to performing an analysis of the results in terms of postoperative visual quality in relation to the lens's decentration and thus see how this really affects.

scholarly journals Evaluating Rotational Stability of an Extended Depth of Focus Toric Intraocular Lens Using a Slit Lamp and Image-Based Analysis

2020 ◽  
Vol Volume 14 ◽  
pp. 2405-2410
Author(s):  
Helga P Sandoval ◽  
Stephen Lane ◽  
Stephen Slade ◽  
Eric D Donnenfeld ◽  
Richard Potvin ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Rotational Stability ◽  
Slit Lamp ◽  
Depth Of Focus ◽  
Toric Intraocular Lens ◽  
Extended Depth Of Focus

Rotational Stability and Visual Outcomes of V4c Toric Phakic Intraocular Lenses

2018 ◽  
Vol 34 (7) ◽  
pp. 489-496 ◽  
Author(s):  
Hun Lee ◽  
David Sung Yong Kang ◽  
Jin Young Choi ◽  
Byoung Jin Ha ◽  
Eung Kweon Kim ◽  
...  
Keyword(s):  
Intraocular Lenses ◽  
Rotational Stability ◽  
Visual Outcomes ◽  
Phakic Intraocular Lenses

scholarly journals Rotational stability and visual outcomes with the implantation of the enVista MX60T TORIC intraocular lens

2019 ◽  
Vol 92 (3) ◽  
Author(s):  
Flor D. Guzmán-Iturbe ◽  
Eduardo Chávez-Mondragón ◽  
Diego Zamora-de-la-Cruz ◽  
Amanda Cáceres-Marín ◽  
Daniela Pulido-London ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Rotational Stability ◽  
Toric Intraocular Lens ◽  
Visual Outcomes

Comparing capsular bag performance of a hydrophilic and a hydrophobic intraocular lens: A randomised two-centre study

2018 ◽  
Vol 28 (6) ◽  
pp. 639-644 ◽  
Author(s):  
John Koshy ◽  
Nino Hirnschall ◽  
Ashok Kumar V Vyas ◽  
R Narendran ◽  
Alja Crnej ◽  
...  
Keyword(s):  
Cataract Surgery ◽  
Intraocular Lens ◽  
Posterior Capsule Opacification ◽  
Intraocular Lenses ◽  
Posterior Capsule ◽  
Fort Worth ◽  
Slit Lamp ◽  
Significant Difference ◽  
Capsular Bag

Purpose: To evaluate the capsular bag performance and posterior capsule opacification development of two intraocular lenses differing in material and design. Methods: This study included patients who were scheduled for cataract surgery and compared a hydrophilic intraocular lens (Super flex® intraocular lens; Rayner Surgical, Worthing, UK) with a hydrophobic intraocular lens (AcrySof® SA60AT; Alcon, Fort Worth, TX, USA). Follow-ups were performed 1 month and 2 years after cataract surgery, including a slit lamp examination and retroillumination images. Results: In total, 80 eyes of 80 patients were recruited. At the 1-month follow-up, 6 of 39 cases had a gap between the posterior lens capsule and intraocular lens (1 case in the hydrophilic intraocular lens group and 5 cases in the hydrophobic intraocular lens group; p = 0.348). Objective and subjective posterior capsule opacification scoring showed no statistically significant difference between both groups (p = 0.123). Conclusion: Both intraocular lens showed a good capsular bag performance and a relatively low posterior capsule opacification development within the first 2 years after surgery.

Comparison of incidence of repositioning surgery to correct misalignment with three toric intraocular lenses

2019 ◽  
Vol 30 (4) ◽  
pp. 680-684 ◽  
Author(s):  
Tetsuro Oshika ◽  
Yoshifumi Fujita ◽  
Atsushi Hirota ◽  
Mikio Inamura ◽  
Yasushi Inoue ◽  
...  
Keyword(s):  
Cataract Surgery ◽  
Intraocular Lens ◽  
Case Series ◽  
Intraocular Lenses ◽  
Rotational Stability ◽  
Toric Intraocular Lens ◽  
Significant Difference

Purpose: To compare the incidence of re-orientating surgery to improve misalignment of three models of acrylic toric intraocular lenses: AcrySof toric intraocular lens (Alcon Laboratories, Inc.), TECNIS toric intraocular lens (Johnson & Johnson Vision, Inc.) and HOYA 355 toric intraocular lens (HOYA). Methods: In this retrospective, multicenter case series, medical charts were reviewed for collecting data on realignment surgery of toric intraocular lenses at 10 ophthalmic surgical sites in Japan. Results: Over all, intraocular lens repositioning surgery was conducted in 89 of 9430 eyes (0.944%) at an average of 10.5 ± 9.7 days after the initial cataract surgery. The incidence was 0.213% (11/5155), 1.797% (62/3451) and 1.942% (16/824) with AcrySof, TECNIS and HOYA toric intraocular lenses, respectively. The incidence was significantly lower with AcrySof than with other two brands of toric intraocular lenses ( p < 0.0001). In those eyes which underwent reorientation surgery, the amount of misalignment was 26.4 ± 21.9°, 29.7 ± 15.4° and 28.1 ± 20.7° with AcrySof, TECNIS and HOYA toric intraocular lenses, respectively; there was no significant difference among groups ( p = 0.821). The repositioning surgery significantly reduced misalignment in all three groups. Conclusion: The rotational stability was considerably different among toric intraocular lenses of different manufacturers. The incidence of repositioning surgery was significantly lower with AcrySof than with TECNIS and HOYA toric intraocular lenses.

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