Survey of the optical quality of intraocular lens implants

1991 ◽  
Vol 17 (2) ◽  
pp. 168-174 ◽  
Author(s):  
Laurence W. Grossman ◽  
David A. Igel ◽  
Robert W. Faaland
Keyword(s):  
Intraocular Lens ◽  
Optical Quality

scholarly journals Clinical outcomes with a diffractive trifocal intraocular lens

2018 ◽  
Vol 28 (4) ◽  
pp. 419-424 ◽  
Author(s):  
Jorge L Alió ◽  
Ana B Plaza-Puche ◽  
Jorge L Alió del Barrio ◽  
Pedro Amat-Peral ◽  
Vicente Ortuño ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Intraocular Lens ◽  
Case Series ◽  
Optical Quality ◽  
Near Vision ◽  
Case Series Study ◽  
Defocus Curve ◽  
Near Visual Acuity

Purpose: To evaluate clinical and visual outcomes, quality of near vision, and intraocular optical quality of patients bilaterally implanted with a trifocal PanOptix intraocular lens. Methods: In this prospective consecutive case-series study, 52 eyes of 26 bilateral patients (mean age, 60.2 ± 7.4 years) were implanted with the AcrySof IQ Panoptix intraocular lens. Visual acuity, defocus curve, contrast sensitivity (Pelli-Robson test), near activity visual questionnaire, and internal aberrations with Osiris were evaluated. A prototype light-distortion analyzer was used to quantify the postoperative light-distortion indices. The follow-up was 6 months after surgery. Results: Uncorrected, corrected distance, and uncorrected near visual acuities improved with the surgery (p ≤ 0.02). Distance corrected near visual acuity was 0.13 ± 0.10, 0.13 ± 0.13, and 0.13 ± 0.08 at 1, 3, and 6 months after surgery, respectively (p = 0.82). Distance corrected intermediate visual acuities were 0.09 ± 0.13, 0.13 ± 0.15, and 0.12 ± 0.12 at 1, 3, and 6 months, postoperatively. Binocular contrast sensitivity was 1.86 ± 0.15 Log Units. Defocus curve provided a visual acuity equal or better to 0.30 LogMAR between defocus levels of +0.50 to −3.00 D. The near activity visual questionnaire scores improved significantly with the surgery (p < 0.01). Conclusion: The AcrySof IQ Panoptix intraocular lens is able to restore visual function with an acceptable intermediate and near vision after cataract surgery with good contrast sensitivity and an improvement in the near activity visual questionnaire.

Optical quality of the eye after lens replacement with a pseudoaccommodating intraocular lens

2008 ◽  
Vol 34 (5) ◽  
pp. 763-768 ◽  
Author(s):  
Robert Montés-Micó ◽  
Teresa Ferrer-Blasco ◽  
Neil W. Charman ◽  
Alejandro Cerviño ◽  
José F. Alfonso ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Optical Quality

scholarly journals Optical tolerance to rotation of trifocal toric intraocular lenses as a function of the cylinder power

2020 ◽  
pp. 112067212092684
Author(s):  
Javier Ruiz-Alcocer ◽  
Amalia Lorente-Velázquez ◽  
Pablo de Gracia ◽  
David Madrid-Costa
Keyword(s):  
Transfer Function ◽  
Intraocular Lens ◽  
Modulation Transfer Function ◽  
Optical Quality ◽  
Significant Loss ◽  
Intraocular Lenses ◽  
Modulation Transfer ◽  
The Impact ◽  
Distance Vision

Background: The aim was to assess the impact of 5- and 10-degree rotations in the optical quality of a trifocal toric intraocular lens with different amounts of cylinder. Methods: Two Physiol Toric intraocular lenses with 1.5 and 3.0 D of cylinder were analysed in three different positions: centred, 5 and 10 degrees rotated. The optical quality of the intraocular lenses was evaluated with the PMTF optical bench through specific perpendicular targets. The analysis was performed by the through-focus modulation transfer function curves and the modulation transfer function corresponding to distance vision (0 D of vergence). Results: For a centred situation, the through-focus modulation transfer function curves of both intraocular lenses showed the classical three peaks corresponding to the powers of the two principal meridians of the intraocular lenses. When 5 and 10 degrees of rotation were induced, the three peaks were attenuated in both cases. The case with the intraocular lens with 3.0 D of cylinder and 10 degrees of rotation showed the worst optical quality and a significant loss of trifocality. The modulation transfer function values obtained for distance vision also showed the worst optical quality for the intraocular lens with 3.0 D of cylinder and 10 degrees of rotation. Conclusion: Rotations over 5 degrees decreased the optical quality of trifocal toric intraocular lenses, being this reduction moderate from 5 to 10 degrees for low levels of cylinder (≤1.5 D). For mid-high levels of cylinder (≥3.0 D), rotations over 5 degrees cause a significant loss of optical quality at all object distances.

The impact of glistenings on the optical quality of a hydrophobic acrylic intraocular lens

2019 ◽  
Vol 45 (7) ◽  
pp. 1020-1025 ◽  
Author(s):  
Jan N. Weindler ◽  
Grzegorz Łabuz ◽  
Timur M. Yildirim ◽  
Tamer Tandogan ◽  
Ramin Khoramnia ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Optical Quality ◽  
The Impact ◽  
Hydrophobic Acrylic

Lack of Effect of Intraocular Lens Asphericity on Visual Performance with Acrylic Intraocular Lenses

2011 ◽  
Vol 21 (6) ◽  
pp. 723-731 ◽  
Author(s):  
Gonzalo Muñoz ◽  
César Albarrán-Diego ◽  
Ma Ángeles Galotto ◽  
Javier Pascual ◽  
Teresa Ferrer-Blasco
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Intraocular Lens ◽  
Spherical Aberration ◽  
Optical Quality ◽  
Intraocular Lenses ◽  
Bilateral Cataract ◽  
Quality Of Vision ◽  
Ocular Aberrations

Purpose. To determine whether implantation of acrylic intraocular lens (IOL) with aspheric design (Tecnis Z9003, AMO) results in improved visual acuity or contrast sensitivity compared with conventional spherical acrylic IOL (AR40e, AMO). Methods. In an intraindividual randomized prospective study of 60 patients with bilateral cataract, the Tecnis Z9003 IOL was compared with the AR40e IOL. Ocular aberrations for a 4.0-mm pupil and 6.0-mm pupil were measured with a Hartmann-Shack aberrometer. Quality of vision was measured using visual acuity and contrast sensitivity under mesopic and photopic conditions. Results. Eyes with the Tecnis Z9003 IOL had significantly less spherical aberration and greater Strehl ratio after surgery, showing a better optical quality in comparison with the standard spherical IOL. However, visual acuity and both mesopic and photopic contrast sensitivity were not significantly different between the groups. Conclusions. The significantly better optical quality achieved with the aspheric acrylic IOL design did not result in improved visual acuity or contrast sensitivity in comparison with a conventional spherical acrylic IOL.

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