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Ruth Lapidgortzak - One of the best experts on this subject based on the ideXlab platform.

  • ascrs calculator formula accuracy in Multifocal Intraocular Lens implantation in hyperopic corneal refractive laser surgery eyes
    Journal of Cataract and Refractive Surgery, 2019
    Co-Authors: Violette Vrijman, Jan Willem Van Der Linden, Ivanka J E Van Der Meulen, Maarten P Mourits, Adi Abulafia, Ruth Lapidgortzak
    Abstract:

    Purpose To evaluate the accuracy of different Intraocular Lens (IOL) power calculation formulas available on the American Society of Cataract and Refractive Surgery calculator in calculating Multifocal IOL power in eyes with previous hyperopic corneal refractive laser surgery. Design Retrospective case series. Setting Amsterdam University Medical Center, University of Amsterdam, and Retina Total Eye Care, Driebergen, the Netherlands. Methods This study compared the accuracy of 3 formulas using historical refractive data (ie, Masket, modified Masket, and Barrett True-K) and 3 formulas using no previous refractive data (ie, Shammas, Haigis-L, and Barrett True-K no-history). Results Sixty-four eyes were included. The variance of the prediction error of the various formulas was similar and ranged from 0.27 D2 to 0.33 D2 (P = .99). The modified Masket formula had a significantly higher median absolute prediction error than the Masket formula, Barrett True-K formula, and mean value of all formulas (P  Conclusion All formulas showed comparable accuracy in predicting IOL power in eyes after hyperopic corneal refractive laser surgery except for the modified Masket formula, which performed less accurately than the Masket formula, Barrett True-K formula, and mean value of all formulas.

  • Multifocal Intraocular Lens implantation after previous corneal refractive laser surgery for myopia
    Journal of Cataract and Refractive Surgery, 2017
    Co-Authors: Violette Vrijman, Jan Willem Van Der Linden, Ivanka J E Van Der Meulen, Maarten P Mourits, Ruth Lapidgortzak
    Abstract:

    Purpose To describe the refraction and visual acuity outcomes of Multifocal Intraocular Lens (IOL) implantation in patients with previous corneal refractive laser surgery for myopia. Setting Academic Medical Center, University of Amsterdam, Amsterdam, and Retina Total Eye Care, Driebergen, the Netherlands. Design Retrospective cohort study. Methods The 3-month results after implantation of a Multifocal IOL (Acrysof Restor) in patients who had corneal refractive laser surgery for myopia were analyzed. The primary outcome measures were corrected distance visual acuity, uncorrected distance visual acuity (UDVA), and refraction. The secondary outcome measures were number of laser enhancements, corneal irregularity, pre-laser magnitude of myopia, and posterior capsule opacification (PCO) rate. Results Seventy-seven eyes of 43 patients were included. Twenty-nine eyes had Lens extraction because of cataract, and 48 eyes had a refractive Lens exchange. The mean postoperative UDVA was 0.14 logarithm of minimum angle of resolution ± 0.22 (SD). The mean postoperative spherical equivalent was −0.38 ± 0.78 diopter (D). Fifty-seven percent of eyes were within ±0.50 D of emmetropia, and 86% were within ±1.0 D. Sixteen eyes (20.8%) had laser enhancement because of residual refraction. Fourteen eyes (18.2%) had a neodymium:YAG laser capsulotomy because of PCO. Eyes with pre-laser myopia greater than 6.0 D had a less predictable outcome than eyes with pre-laser myopia less than 6.0 D (P = .026). Conclusions Multifocal IOL implantation after corneal refractive laser surgery for myopia resulted in good visual acuity and refraction. Results were less predictable with myopia greater than 6.0 D.

  • seven year follow up of unilateral Multifocal pseudophakia in a child
    International Ophthalmology, 2017
    Co-Authors: Ruth Lapidgortzak, Maarten P Mourits, I J Van Der Meulen, H M Jellema, C P Nieuwendaal
    Abstract:

    The purpose of the study was to report the long-term outcome of unilateral implantation of a Multifocal Intraocular Lens (IOL) in a pediatric cataract. This study was carried out at Tertiary Academic Ophthalmology Department, AMC, Amsterdam. This is a case report study of a 7-year-old child with a unilateral irradiation cataract, in whom an apodized diffractive Multifocal IOL (SN6D3, Alcon) was implanted at the time of cataract surgery. During the follow-up period, visual acuity was preserved at logMAR -0.1; the child did not develop amblyopia. Binocular single vision was established. Few glistenings were seen on the IOL. The non-operated eye developed more myopia during the follow-up period than the Multifocally implanted eye. Straylight was increased to log(s) 1.83. Patient and parents satisfaction were high. In selected cases, unilateral implantation of apodized diffractive Multifocal IOLs leads to good long-term results in terms of visual acuity and patient satisfaction. No untoward effects were seen, including few glistenings on the IOL. Straylight is increased, but subjectively not disturbing.

  • in the bag decentration of a hydrophilic radially asymmetric Multifocal Intraocular Lens secondary to capsule contraction
    Journal of Cataract and Refractive Surgery, 2013
    Co-Authors: Jan Willem Van Der Linden, Maarten P Mourits, Ivanka J E Van Der Meulen, Ruth Lapidgortzak
    Abstract:

    We report a case of in-the-bag decentration and tilt of a hydrophilic rotationally asymmetric Multifocal Intraocular Lens (IOL) of the M Plus type secondary to capsule contraction. After uneventful surgery and follow-up for 3 months, progressive decentering and tilting of the IOL secondary to capsule contraction and capsulorhexis phimosis was noticed. A surgical procedure was necessary to restore correct centration of the IOL. The uncorrected distance and near visual acuities were restored to logMAR 0. Hydrophilic Multifocal IOLs of this specific design may be sensitive to postoperative decentration. Capsular tension rings may alleviate the problem in a secondary repair procedure. The softness of the C-loop haptics of this IOL type may also play a role in the decentration. Financial Disclosure Dr. Lapid-Gortzak has received speaker fees from Alcon Laboratories, Inc., Hanita Lenses, MSD, and Oculentis GmbH and is a clinical investigator for Alcon Laboratories, Inc. No author has a financial or proprietary interest in any material or method mentioned.

Maarten P Mourits - One of the best experts on this subject based on the ideXlab platform.

  • ascrs calculator formula accuracy in Multifocal Intraocular Lens implantation in hyperopic corneal refractive laser surgery eyes
    Journal of Cataract and Refractive Surgery, 2019
    Co-Authors: Violette Vrijman, Jan Willem Van Der Linden, Ivanka J E Van Der Meulen, Maarten P Mourits, Adi Abulafia, Ruth Lapidgortzak
    Abstract:

    Purpose To evaluate the accuracy of different Intraocular Lens (IOL) power calculation formulas available on the American Society of Cataract and Refractive Surgery calculator in calculating Multifocal IOL power in eyes with previous hyperopic corneal refractive laser surgery. Design Retrospective case series. Setting Amsterdam University Medical Center, University of Amsterdam, and Retina Total Eye Care, Driebergen, the Netherlands. Methods This study compared the accuracy of 3 formulas using historical refractive data (ie, Masket, modified Masket, and Barrett True-K) and 3 formulas using no previous refractive data (ie, Shammas, Haigis-L, and Barrett True-K no-history). Results Sixty-four eyes were included. The variance of the prediction error of the various formulas was similar and ranged from 0.27 D2 to 0.33 D2 (P = .99). The modified Masket formula had a significantly higher median absolute prediction error than the Masket formula, Barrett True-K formula, and mean value of all formulas (P  Conclusion All formulas showed comparable accuracy in predicting IOL power in eyes after hyperopic corneal refractive laser surgery except for the modified Masket formula, which performed less accurately than the Masket formula, Barrett True-K formula, and mean value of all formulas.

  • Multifocal Intraocular Lens implantation after previous corneal refractive laser surgery for myopia
    Journal of Cataract and Refractive Surgery, 2017
    Co-Authors: Violette Vrijman, Jan Willem Van Der Linden, Ivanka J E Van Der Meulen, Maarten P Mourits, Ruth Lapidgortzak
    Abstract:

    Purpose To describe the refraction and visual acuity outcomes of Multifocal Intraocular Lens (IOL) implantation in patients with previous corneal refractive laser surgery for myopia. Setting Academic Medical Center, University of Amsterdam, Amsterdam, and Retina Total Eye Care, Driebergen, the Netherlands. Design Retrospective cohort study. Methods The 3-month results after implantation of a Multifocal IOL (Acrysof Restor) in patients who had corneal refractive laser surgery for myopia were analyzed. The primary outcome measures were corrected distance visual acuity, uncorrected distance visual acuity (UDVA), and refraction. The secondary outcome measures were number of laser enhancements, corneal irregularity, pre-laser magnitude of myopia, and posterior capsule opacification (PCO) rate. Results Seventy-seven eyes of 43 patients were included. Twenty-nine eyes had Lens extraction because of cataract, and 48 eyes had a refractive Lens exchange. The mean postoperative UDVA was 0.14 logarithm of minimum angle of resolution ± 0.22 (SD). The mean postoperative spherical equivalent was −0.38 ± 0.78 diopter (D). Fifty-seven percent of eyes were within ±0.50 D of emmetropia, and 86% were within ±1.0 D. Sixteen eyes (20.8%) had laser enhancement because of residual refraction. Fourteen eyes (18.2%) had a neodymium:YAG laser capsulotomy because of PCO. Eyes with pre-laser myopia greater than 6.0 D had a less predictable outcome than eyes with pre-laser myopia less than 6.0 D (P = .026). Conclusions Multifocal IOL implantation after corneal refractive laser surgery for myopia resulted in good visual acuity and refraction. Results were less predictable with myopia greater than 6.0 D.

  • seven year follow up of unilateral Multifocal pseudophakia in a child
    International Ophthalmology, 2017
    Co-Authors: Ruth Lapidgortzak, Maarten P Mourits, I J Van Der Meulen, H M Jellema, C P Nieuwendaal
    Abstract:

    The purpose of the study was to report the long-term outcome of unilateral implantation of a Multifocal Intraocular Lens (IOL) in a pediatric cataract. This study was carried out at Tertiary Academic Ophthalmology Department, AMC, Amsterdam. This is a case report study of a 7-year-old child with a unilateral irradiation cataract, in whom an apodized diffractive Multifocal IOL (SN6D3, Alcon) was implanted at the time of cataract surgery. During the follow-up period, visual acuity was preserved at logMAR -0.1; the child did not develop amblyopia. Binocular single vision was established. Few glistenings were seen on the IOL. The non-operated eye developed more myopia during the follow-up period than the Multifocally implanted eye. Straylight was increased to log(s) 1.83. Patient and parents satisfaction were high. In selected cases, unilateral implantation of apodized diffractive Multifocal IOLs leads to good long-term results in terms of visual acuity and patient satisfaction. No untoward effects were seen, including few glistenings on the IOL. Straylight is increased, but subjectively not disturbing.

  • in the bag decentration of a hydrophilic radially asymmetric Multifocal Intraocular Lens secondary to capsule contraction
    Journal of Cataract and Refractive Surgery, 2013
    Co-Authors: Jan Willem Van Der Linden, Maarten P Mourits, Ivanka J E Van Der Meulen, Ruth Lapidgortzak
    Abstract:

    We report a case of in-the-bag decentration and tilt of a hydrophilic rotationally asymmetric Multifocal Intraocular Lens (IOL) of the M Plus type secondary to capsule contraction. After uneventful surgery and follow-up for 3 months, progressive decentering and tilting of the IOL secondary to capsule contraction and capsulorhexis phimosis was noticed. A surgical procedure was necessary to restore correct centration of the IOL. The uncorrected distance and near visual acuities were restored to logMAR 0. Hydrophilic Multifocal IOLs of this specific design may be sensitive to postoperative decentration. Capsular tension rings may alleviate the problem in a secondary repair procedure. The softness of the C-loop haptics of this IOL type may also play a role in the decentration. Financial Disclosure Dr. Lapid-Gortzak has received speaker fees from Alcon Laboratories, Inc., Hanita Lenses, MSD, and Oculentis GmbH and is a clinical investigator for Alcon Laboratories, Inc. No author has a financial or proprietary interest in any material or method mentioned.

Jorge L Alio - One of the best experts on this subject based on the ideXlab platform.

  • Multifocal Intraocular Lenses an overview
    Survey of Ophthalmology, 2017
    Co-Authors: Jorge L Alio, Ana B Plazapuche, Roberto Fernandezbuenaga, Joseph Pikkel, Miguel J Maldonado
    Abstract:

    Multifocal Intraocular Lenses are increasingly used in the management of pseudophakic presbyopia. After Multifocal Intraocular Lens implantation, most patients do not need spectacles or contact Lenses and are pleased with the result. Complications, however, may affect the patient's quality of life and level of satisfaction. Common problems with Multifocal Lenses are blurred vision and photic phenomena associated with residual ametropia, posterior capsule opacification, large pupil size, wavefront anomalies, dry eye, and Lens decentration. The main reasons for these are failure to neuroadapt, Lens dislocation, residual refractive error, and Lens opacification. To avoid patient dissatisfaction after Multifocal Intraocular Lens implantation, it is important to consider preoperatively the patient's lifestyle; perform an exhaustive examination including biometry, topography, and pupil reactivity; and explain the visual expectations and possible postoperative complications.

  • efficacy and safety of Multifocal Intraocular Lenses following cataract and refractive Lens exchange metaanalysis of peer reviewed publications
    Journal of Cataract and Refractive Surgery, 2016
    Co-Authors: Emanuel Rosen, Jorge L Alio, Burkhard H Dick, Steven J Dell, Stephen Slade
    Abstract:

    We performed a metaanlysis of peer-reviewed studies involving implantation of a Multifocal Intraocular Lens (IOL) in presbyopic patients with cataract or having refractive Lens exchange (RLE). Previous reviews have considered the use of Multifocal IOLs after cataract surgery but not after RLE, whereas greater insight might be gained from examining the full range of studies. Selected studies were examined to collate outcomes with monocular and binocular uncorrected distance, intermediate, and near visual acuity; spectacle independence; contrast sensitivity; visual symptoms; adverse events; and patient satisfaction. In 8797 eyes, the mean postoperative monocular uncorrected distance visual acuity (UDVA) was 0.05 logMAR ± 0.006 (SD) (Snellen equivalent 20/20 −3 ). In 6334 patients, the mean binocular UDVA was 0.04 ± 0.00 logMAR (Snellen equivalent 20/20 −2 ), with a mean spectacle independence of 80.1%. Monocular mean UDVA did not differ significantly between those who had a cataract procedure and those who had an RLE procedure. Neural adaptation to Multifocality may vary among patients. Financial Disclosure Dr. Alio is a clinical research investigator for Hanita Lenses, Carl Zeiss Meditec AG, Topcon Medical Systems, Inc., Oculentis GmbH, and AkkoLens International BV. Dr. Dell is a consultant to Bausch & Lomb and Abbott Medical Optics, Inc. Dr. Slade is a consultant to Alcon Surgical, Inc., Carl Zeiss Meditec AG, and Bausch & Lomb. None of the authors has a financial or proprietary interest in any material or method mentioned.

  • vector analysis of astigmatic changes after cataract surgery with implantation of a new toric Multifocal Intraocular Lens
    Journal of Cataract and Refractive Surgery, 2011
    Co-Authors: Jorge L Alio, David P Pinero, Javier Tomas, Ana B Plaza
    Abstract:

    Purpose To analyze the astigmatic changes after cataract surgery with the implantation of a new toric Multifocal Intraocular Lens (IOL) using the Alpins vector method. Setting Vissum-Instituto de Oftalmologico de Alicante, Alicante, Spain. Design Prospective case series. Methods After cataract surgery with implantation of an AT Lisa 909M toric Multifocal IOL, the visual, refractive, corneal topographic, internal astigmatism, defocus curves, and contrast sensitivity outcomes were evaluated over 6 months. Refractive astigmatic changes (target astigmatism [TIA]; surgically induced astigmatism [SIA]; difference vector; magnitude of error; flattening effect; torque) were analyzed using the Alpins vectorial method. Results The study enrolled 23 eyes (12 patients). Postoperatively, there was a significant reduction in refractive cylinder ( P P =.03) and distance ( P =.01). The magnitude of SIA vector was significantly larger than the TIA 3 months postoperatively ( P =.03). The mean magnitude of the difference vector was 0.67 diopter (D) ± 0.51 (SD) at 6 months. The mean magnitude of error remained positive and close to zero over the entire follow-up ( P ≥.19). The mean magnitude of torque vector was 0.49 ± 0.54 D at 6 months. Significant positive correlation was found between the magnitude of torque and the difference vector ( r ≥ 0.70, P Conclusion The new toric IOL restored distance and near visual function with excellent predictability in eyes with moderate to high corneal astigmatism having cataract surgery. Financial Disclosure No author has a financial or proprietary interest in any material or method mentioned.

  • quality of life evaluation after implantation of 2 Multifocal Intraocular Lens models and a monofocal model
    Journal of Cataract and Refractive Surgery, 2011
    Co-Authors: Jorge L Alio, David P Pinero, Ana B Plazapuche, Francisco Amparo, Jose L Rodriguezprats, Maria Jose Ayala
    Abstract:

    Purpose To compare vision-related quality of life using the National Eye Institute Visual Function Questionnaire (NEI VFQ-25) in patients with 1 of 3 types of Intraocular Lenses (IOLs) and to correlate it with postoperative visual outcomes. Setting Vissum Corporation–Instituto Oftalmologico de Alicante, Alicante, Spain. Design Comparative case series. Methods This study comprised eyes having cataract surgery with bilateral implantation of a monofocal IOL (Group A), apodized Multifocal IOL (Group B), or full diffractive Multifocal IOL (Group C). Distance and near visual acuities, contrast sensitivity, and quality of life were evaluated preoperatively and postoperatively. Results The study enrolled 106 eyes (53 patients; age range 49 to 80 years). All groups had significant improvement in uncorrected and corrected distance visual acuities postoperatively (P≤.05). Near vision outcomes were significantly better in Groups B and C (P≤.01). Groups B and C had significantly less difficulty in some near tasks, such as reading the newspaper (A–B, P=.02; A–C, P=.02) or reading bills (A–B, P=.04; A–C, P=.004). Group C also had significantly less difficulty driving at night than Group B (P Conclusions Patients with Multifocal IOLs could perform several daily tasks at near and intermediate distances, with less night-driving limitation with the full diffractive IOL than with apodized Multifocal and monofocal IOLs. Financial Disclosure No author has a financial or proprietary interest in any material or method mentioned.

  • optical analysis reading performance and quality of life evaluation after implantation of a diffractive Multifocal Intraocular Lens
    Journal of Cataract and Refractive Surgery, 2011
    Co-Authors: Jorge L Alio, David P Pinero, Ana B Plazapuche, Francisco Amparo, Jose L Rodriguezprats, Ramon Jimenez, Jaime Javaloy, Vanessa Pongo
    Abstract:

    Purpose To evaluate the reading performance, changes in quality of life, and optical performance after cataract surgery with Multifocal diffractive Intraocular Lens (IOL) implantation. Setting Vissum Corporation, Alicante, Spain. Design Prospective case series. Methods Patients with bilateral cataract had implantation of Acri.LISA 366D Multifocal IOLs. Visual acuity and contrast sensitivity outcomes were evaluated during a 6-month follow-up. Other parameters evaluated included reading performance (Salzburg Reading Desk), a 25-item quality-of-life questionnaire (National Eye Institute Visual Functioning Questionnaire-25 [NEI VFQ-25] and appendix NEI VFQ-39), and ocular optical performance (ocular aberrometry and modulation transfer function). Results The study included 48 eyes (24 patients) ranging in age from 47 to 77 years. The mean uncorrected distance visual acuity (logMAR) improved significantly 1 month postoperatively ( P P ≥.06). The mean reading acuity without correction improved significantly from 0.68 logRAD ± 0.20 (SD) to 0.16 ± 0.08 logRAD 1 month after surgery ( P P = .04). During the follow-up, no significant changes were found in the mean reading speed without near correction (6 months, P = .50). Contrast sensitivity improved significantly at all spatial frequencies under photopic and scotopic conditions after surgery (6 months, P ≤.02). The quality-of-life index related to reading ability also improved significantly (3 months, P = .03). Conclusion Implantation of the Multifocal diffractive IOL significantly improved reading performance, which had a positive effect on the patient's quality of life postoperatively. Financial Disclosure No author has a financial or proprietary interest in any material or method mentioned.

Violette Vrijman - One of the best experts on this subject based on the ideXlab platform.

  • ascrs calculator formula accuracy in Multifocal Intraocular Lens implantation in hyperopic corneal refractive laser surgery eyes
    Journal of Cataract and Refractive Surgery, 2019
    Co-Authors: Violette Vrijman, Jan Willem Van Der Linden, Ivanka J E Van Der Meulen, Maarten P Mourits, Adi Abulafia, Ruth Lapidgortzak
    Abstract:

    Purpose To evaluate the accuracy of different Intraocular Lens (IOL) power calculation formulas available on the American Society of Cataract and Refractive Surgery calculator in calculating Multifocal IOL power in eyes with previous hyperopic corneal refractive laser surgery. Design Retrospective case series. Setting Amsterdam University Medical Center, University of Amsterdam, and Retina Total Eye Care, Driebergen, the Netherlands. Methods This study compared the accuracy of 3 formulas using historical refractive data (ie, Masket, modified Masket, and Barrett True-K) and 3 formulas using no previous refractive data (ie, Shammas, Haigis-L, and Barrett True-K no-history). Results Sixty-four eyes were included. The variance of the prediction error of the various formulas was similar and ranged from 0.27 D2 to 0.33 D2 (P = .99). The modified Masket formula had a significantly higher median absolute prediction error than the Masket formula, Barrett True-K formula, and mean value of all formulas (P  Conclusion All formulas showed comparable accuracy in predicting IOL power in eyes after hyperopic corneal refractive laser surgery except for the modified Masket formula, which performed less accurately than the Masket formula, Barrett True-K formula, and mean value of all formulas.

  • Multifocal Intraocular Lens implantation after previous corneal refractive laser surgery for myopia
    Journal of Cataract and Refractive Surgery, 2017
    Co-Authors: Violette Vrijman, Jan Willem Van Der Linden, Ivanka J E Van Der Meulen, Maarten P Mourits, Ruth Lapidgortzak
    Abstract:

    Purpose To describe the refraction and visual acuity outcomes of Multifocal Intraocular Lens (IOL) implantation in patients with previous corneal refractive laser surgery for myopia. Setting Academic Medical Center, University of Amsterdam, Amsterdam, and Retina Total Eye Care, Driebergen, the Netherlands. Design Retrospective cohort study. Methods The 3-month results after implantation of a Multifocal IOL (Acrysof Restor) in patients who had corneal refractive laser surgery for myopia were analyzed. The primary outcome measures were corrected distance visual acuity, uncorrected distance visual acuity (UDVA), and refraction. The secondary outcome measures were number of laser enhancements, corneal irregularity, pre-laser magnitude of myopia, and posterior capsule opacification (PCO) rate. Results Seventy-seven eyes of 43 patients were included. Twenty-nine eyes had Lens extraction because of cataract, and 48 eyes had a refractive Lens exchange. The mean postoperative UDVA was 0.14 logarithm of minimum angle of resolution ± 0.22 (SD). The mean postoperative spherical equivalent was −0.38 ± 0.78 diopter (D). Fifty-seven percent of eyes were within ±0.50 D of emmetropia, and 86% were within ±1.0 D. Sixteen eyes (20.8%) had laser enhancement because of residual refraction. Fourteen eyes (18.2%) had a neodymium:YAG laser capsulotomy because of PCO. Eyes with pre-laser myopia greater than 6.0 D had a less predictable outcome than eyes with pre-laser myopia less than 6.0 D (P = .026). Conclusions Multifocal IOL implantation after corneal refractive laser surgery for myopia resulted in good visual acuity and refraction. Results were less predictable with myopia greater than 6.0 D.

Jan Willem Van Der Linden - One of the best experts on this subject based on the ideXlab platform.

  • ascrs calculator formula accuracy in Multifocal Intraocular Lens implantation in hyperopic corneal refractive laser surgery eyes
    Journal of Cataract and Refractive Surgery, 2019
    Co-Authors: Violette Vrijman, Jan Willem Van Der Linden, Ivanka J E Van Der Meulen, Maarten P Mourits, Adi Abulafia, Ruth Lapidgortzak
    Abstract:

    Purpose To evaluate the accuracy of different Intraocular Lens (IOL) power calculation formulas available on the American Society of Cataract and Refractive Surgery calculator in calculating Multifocal IOL power in eyes with previous hyperopic corneal refractive laser surgery. Design Retrospective case series. Setting Amsterdam University Medical Center, University of Amsterdam, and Retina Total Eye Care, Driebergen, the Netherlands. Methods This study compared the accuracy of 3 formulas using historical refractive data (ie, Masket, modified Masket, and Barrett True-K) and 3 formulas using no previous refractive data (ie, Shammas, Haigis-L, and Barrett True-K no-history). Results Sixty-four eyes were included. The variance of the prediction error of the various formulas was similar and ranged from 0.27 D2 to 0.33 D2 (P = .99). The modified Masket formula had a significantly higher median absolute prediction error than the Masket formula, Barrett True-K formula, and mean value of all formulas (P  Conclusion All formulas showed comparable accuracy in predicting IOL power in eyes after hyperopic corneal refractive laser surgery except for the modified Masket formula, which performed less accurately than the Masket formula, Barrett True-K formula, and mean value of all formulas.

  • Multifocal Intraocular Lens implantation after previous corneal refractive laser surgery for myopia
    Journal of Cataract and Refractive Surgery, 2017
    Co-Authors: Violette Vrijman, Jan Willem Van Der Linden, Ivanka J E Van Der Meulen, Maarten P Mourits, Ruth Lapidgortzak
    Abstract:

    Purpose To describe the refraction and visual acuity outcomes of Multifocal Intraocular Lens (IOL) implantation in patients with previous corneal refractive laser surgery for myopia. Setting Academic Medical Center, University of Amsterdam, Amsterdam, and Retina Total Eye Care, Driebergen, the Netherlands. Design Retrospective cohort study. Methods The 3-month results after implantation of a Multifocal IOL (Acrysof Restor) in patients who had corneal refractive laser surgery for myopia were analyzed. The primary outcome measures were corrected distance visual acuity, uncorrected distance visual acuity (UDVA), and refraction. The secondary outcome measures were number of laser enhancements, corneal irregularity, pre-laser magnitude of myopia, and posterior capsule opacification (PCO) rate. Results Seventy-seven eyes of 43 patients were included. Twenty-nine eyes had Lens extraction because of cataract, and 48 eyes had a refractive Lens exchange. The mean postoperative UDVA was 0.14 logarithm of minimum angle of resolution ± 0.22 (SD). The mean postoperative spherical equivalent was −0.38 ± 0.78 diopter (D). Fifty-seven percent of eyes were within ±0.50 D of emmetropia, and 86% were within ±1.0 D. Sixteen eyes (20.8%) had laser enhancement because of residual refraction. Fourteen eyes (18.2%) had a neodymium:YAG laser capsulotomy because of PCO. Eyes with pre-laser myopia greater than 6.0 D had a less predictable outcome than eyes with pre-laser myopia less than 6.0 D (P = .026). Conclusions Multifocal IOL implantation after corneal refractive laser surgery for myopia resulted in good visual acuity and refraction. Results were less predictable with myopia greater than 6.0 D.

  • ORIGINAL PAPER Comparison of a hydrophilic and a hydrophobic apodized diffractive Multifocal Intraocular Lens
    2016
    Co-Authors: Jan Willem Van Der Linden, Ruth Lapid-gortzak
    Abstract:

    Abstract To compare outcomes between a new design apodized diffractive hydrophilic Multifocal Intraocular Lens (IOL) (SeeLens MF; study group), and a well-known apodized diffractive hydrophobic Multifocal IOL (SN6AD1; control group). A compar-ative case series comparing refractive and visual outcomes at distance and near. Patient satisfaction with a validated questionnaire, dysphotopsia and straylight measurement scores were recorded at 3 months post-operatively. The study group comprised 48 eyes and the control group 37 eyes. At 3 months post-operatively the mean uncorrected distance visual acuity (UDVA) was not statistically significant differ-ent between the study group and the control group (0.02 ± 0.07 logMAR [SD] vs 0.04 ± 0.09 log-MAR). Corrected distance visual acuity (CDVA) was statistically significantly better with the study Lens (-0.04 ± 0.05 logMAR vs-0.01 ± 0.04 logMAR (p \ 0.019). There was no clinical or statistical significant difference at the 40 cm distance (0.09 ± 0.12 logMAR vs 0.08 ± 0.09 logMAR). The study group had statistically significant better uncorrected near acuity at 50 and 60 cm distances (p \ 0.03 and p \ 0.007, respectively). In terms of satisfaction the Lenses performed equally. Halos were seen less often with the study Lens. Straylight, as a parameter for visual quality, was significantly less with the study Lens. Conclusion: The SeeLens MF performs equally as well as the well-known SN6AD1 for UCDA and CDVA. The SeeLens MF performs better at intermediate distance, and seems to allow for better depth of focus, and increased visual quality. More study is needed to corroborate the last finding