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  • 1
    Online Resource
    Online Resource
    Are all customized contact lenses created equally?
    Elsevier BV ; 2019
    In:  Contact Lens and Anterior Eye Vol. 42, No. 6 ( 2019-12), p. e5-
    Details
    In: Contact Lens and Anterior Eye, Elsevier BV, Vol. 42, No. 6 ( 2019-12), p. e5-
    Type of Medium: Online Resource
    ISSN: 1367-0484
    URL: Article
    DOI: 10.1016/j.clae.2019.10.017
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2019
    detail.hit.zdb_id: 2004847-6
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  • 2
    Online Resource
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    Comparison of Extended Depth-of-Focus Prototype Contact Lenses with a Commercially-available Center-near Multifocal
    Elsevier BV ; 2019
    In:  Contact Lens and Anterior Eye Vol. 42, No. 6 ( 2019-12), p. e10-e11
    Details
    In: Contact Lens and Anterior Eye, Elsevier BV, Vol. 42, No. 6 ( 2019-12), p. e10-e11
    Type of Medium: Online Resource
    ISSN: 1367-0484
    URL: Article
    DOI: 10.1016/j.clae.2019.10.036
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2019
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  • 3
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    Online Resource
    Forward‐scattered and backward‐scattered light in moderate keratoconus
    Wiley ; 2023
    In:  Ophthalmic and Physiological Optics Vol. 43, No. 4 ( 2023-07), p. 752-759
    Details
    In: Ophthalmic and Physiological Optics, Wiley, Vol. 43, No. 4 ( 2023-07), p. 752-759
    Abstract: To evaluate the backscattered light, objective scatter index (OSI) and retinal straylight in patients with moderate keratoconus and healthy control subjects. Methods A prospective observational study was developed with 33 patients in the moderate‐keratoconus group (KC) and 34 in the non‐keratoconus group (NKC). Corneal densitometry was obtained using Scheimpflug corneal tomography and measurements were expressed in grayscale units (GSU) over four zones within a 12.00 mm diameter around the corneal apex. A straylight meter was used to determine the amount of intraocular straylight under scotopic conditions, and the straylight parameter (LOG(s)) and test duration were recorded. The Optical Quality Analysis System based on the double‐pass technique determined the OSI value. Results Significant differences were observed between the KC and NKC groups for corneal densitometry (except in the 6–10 mm zone), OSI and retinal straylight. A moderate and significant correlation was found between OSI and retinal straylight LOG(s) ( r  = 0.52, p  = 0.002). Weaker and non‐significant correlations were found between corneal densitometry and the other parameters analysed (i.e., OSI, retinal straylight LOG(s) and retinal straylight times). Conclusions Backscattered light, retinal straylight and the OSI show clear differences between healthy eyes and those with moderate KC. The changes present in the stages of KC evaluated in the current study (stages II and III according to the Amsler–Krumeich classification) might alter the scattering of the light entering the eye.
    Type of Medium: Online Resource
    ISSN: 0275-5408 , 1475-1313
    URL: Issue
    URL: Article
    DOI: 10.1111/opo.v43.4
    DOI: 10.1111/opo.13126
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2008422-5
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  • 4
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    Online Resource
    Triple Procedure: A Stepwise Combination of Deep Anterior Lamellar Keratoplasty and Cataract Surgery
    Ovid Technologies (Wolters Kluwer Health) ; 2023
    In:  Cornea ( 2023-8-18)
    Details
    In: Cornea, Ovid Technologies (Wolters Kluwer Health), ( 2023-8-18)
    Abstract: The aim of this study was to evaluate clinical outcomes of the combined surgery (triple procedure) of deep anterior lamellar keratoplasty (DALK), phacoemulsification, and intraocular lens (IOL) implantation using a new surgical strategy. Methods: The study included 43 eyes of 43 patients who underwent a triple procedure. Twenty-six eyes with good visibility through the cornea underwent phacoemulsification before the stromal dissection. Seventeen eyes with bad visibility underwent the DALK procedure first until achieving enough visibility to perform the lensectomy. IOL power calculation was performed for a postoperative estimated flat keratometry of 43.5 and aiming to avoid hyperopic postoperative refraction. The postoperative visual examination included uncorrected and corrected distance visual acuity (CDVA) measurements and manifest refraction. Results: The mean follow-up time after suture removal was 3.06 ± 2.14 years. Mean CDVA significantly changed from 0.86 ± 0.56 logMAR preoperatively to 0.37 ± 0.28 logMAR in the last visit ( P 〈 0.0001). The percentage of eyes with CDVA ≤0.3 logMAR changed from 6.9% preoperatively to 62.8%. No eyes lost lines of vision after surgery, and 80% experienced an improvement of 2 or more lines. The safety index was 2.2. The mean postoperative refractive sphere was +0.13 ± 2.04 D, and the postoperative refractive cylinder was −4.02 ± 2.24 D. Only 2 cases (4.65%) obtained postoperative hyperopic astigmatism. No intraoperative complications were found. Conclusions: Combined surgery of DALK, phacoemulsification, and IOL implantation is an effective and safe procedure. Depending on the corneal transparency, different surgical strategies can be established to provide more efficacy and safety.
    Type of Medium: Online Resource
    ISSN: 0277-3740
    URL: Article
    DOI: 10.1097/ICO.0000000000003364
    RVK:
    XA 37258
    RVK:
    XA 10000
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2023
    detail.hit.zdb_id: 2045943-9
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  • 5
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    Online Resource
    Effect of defocus combined with rotation on the optical performance of trifocal toric IOLs
    SAGE Publications ; 2022
    In:  European Journal of Ophthalmology Vol. 32, No. 1 ( 2022-01), p. 249-254
    Details
    In: European Journal of Ophthalmology, SAGE Publications, Vol. 32, No. 1 ( 2022-01), p. 249-254
    Abstract: To objectively analyze the optical quality of the FineVision Toric intraocular lens (IOL) with two cylinder powers when different combinations of rotations and residual refractive errors are induced. Methods: This study assessed the FineVision Toric IOL with two different cylinder powers: 1.5 and 3.0 diopters (D). Three different rotation positions were considered: centered, 5° and 10° rotated. An optical bench (PMTF) was used for optical analysis. The optical quality of the IOLs was calculated by the modulation transfer function (MTF) at five different focal points (0.0, 0.25, 0.50, 0.75, and 1.00 D). Results: The MTF averaged value of the reference situation was 38.58 and 37.74 for 1.5 and 3.0 D of cylinder, respectively. For the 1.5 D cylinder, the combination of 5° of rotation with a defocus of 0.25, 0.50, 0.75, and 1.0 D induced a decrease on the MTF of 12.39, 19.94, 23.43, 24.23 units, respectively. When induced rotation was 10°, the MTF decrease was 17.26, 23.40, 24.33, 24.48 units, respectively. For the 3.0 D cylinder, the combination of 5° with 0.25, 0.50, 0.75, and 1.0 D of defocus, induced a decrease on the MTF of 12.51, 18.97, 22.36, 22.48 units, respectively. When induced rotation was 10°, the MTF decrease was: 18.42, 21.57, 23.08, and 23.61 units, respectively. Conclusion: For both FineVision Toric IOLs there is a certain optical tolerance to rotations up to 5° or residual refractive errors up to 0.25 D. Situations over these limits and their combination would affect the visual quality of patients implanted with these trifocal toric IOLs.
    Type of Medium: Online Resource
    ISSN: 1120-6721 , 1724-6016
    URL: Article
    DOI: 10.1177/11206721211002121
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 1475018-1
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  • 6
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    Eight-year follow-up of Artiflex and Artiflex Toric phakic intraocular lens
    SAGE Publications ; 2022
    In:  European Journal of Ophthalmology Vol. 32, No. 4 ( 2022-07), p. 2051-2058
    Details
    In: European Journal of Ophthalmology, SAGE Publications, Vol. 32, No. 4 ( 2022-07), p. 2051-2058
    Abstract: To analyse long-term efficacy, safety, visual and refractive stability and physiological changes of Artiflex Myopia and Toric phakic intraocular lenses (pIOL) separately throughout an 8-year follow-up. Design: Retrospective cohort study. Methods: A total of 67 eyes of 37 patients underwent Artiflex Myopia (47 eyes) or Artiflex Toric (20 eyes) implantation for correcting myopia and/or astigmatism. Follow-up evaluations were performed 1, 3, 5 and 8 years after surgery. Preoperative and postoperative data included corrected (CDVA) and uncorrected distance visual acuity (UDVA), manifest refraction, endothelial cell density (ECD) and intraocular pressure (IOP) assessments. Efficacy and safety indexes were analysed. The vectorial analysis was performed using the Thibos method. Results: Mean CDVA and UDVA of both pIOLs significantly improved from preoperative to 1 year after implantation, and then it remained stable over the 8-year follow-up. The efficacy and safety indexes after 8 years were 0.94 ± 0.16 and 1.07 ± 0.18 for Artiflex Myopia and 1.00 ± 0.11 and 1.10 ± 0.15 for Artiflex Toric, respectively. The spherical equivalent (SE) significantly improved after surgery. J0, J45 and SE refractive components showed no changes between postoperative visits. A total ECD loss of 4.8% ( p  〈  0.001) and 10.4% ( p = 0.005) was found after 8 years for Artiflex Myopia and Toric, respectively. Conclusions: Artiflex Myopia and Toric pIOLs are a safe, efficient and predictable option for the correction of myopia and/or astigmatism. The vectorial analysis showed excellent rotation stability for the toric version.
    Type of Medium: Online Resource
    ISSN: 1120-6721 , 1724-6016
    URL: Article
    DOI: 10.1177/11206721211035617
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
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  • 7
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    Online Resource
    Refractive surgery after deep anterior lamellar keratoplasty: a review of the literature
    Springer Science and Business Media LLC ; 2022
    In:  International Ophthalmology Vol. 43, No. 4 ( 2022-09-09), p. 1413-1435
    Details
    In: International Ophthalmology, Springer Science and Business Media LLC, Vol. 43, No. 4 ( 2022-09-09), p. 1413-1435
    Type of Medium: Online Resource
    ISSN: 1573-2630
    URL: Article
    DOI: 10.1007/s10792-022-02507-y
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 2009810-8
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  • 8
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    Changes in Optical Quality Induced by Tilt and Decentration of a Trifocal IOL and a Novel Extended Depth of Focus IOL in Eyes With Corneal Myopic Ablations
    SLACK, Inc. ; 2021
    In:  Journal of Refractive Surgery Vol. 37, No. 8 ( 2021-08), p. 532-537
    Details
    In: Journal of Refractive Surgery, SLACK, Inc., Vol. 37, No. 8 ( 2021-08), p. 532-537
    Abstract: To assess the effect of decentration and tilt combined with prior myopic ablations on the optical performance of a trifocal intraocular lens (IOL) and a novel IOL with an extended depth of focus (EDOF) design. METHODS: The XACT Mono-EDOF ME4 (Santen Pharmaceutical Co Ltd) and the trifocal FineVision (PhysIOL) IOLs were analyzed with and without simulated previous myopic ablations. The optical quality of the IOLs was evaluated with the PMTF optical bench (LAMBDA-X). The through-focus modulation transfer function (MTF) curves were recorded. Measurements were done for three situations: centered, 0.4 mm decentered, and 4 degrees tilted. RESULTS: The trifocal IOL showed three peaks of vision and the EDOF IOL showed a far distance peak with intermediate addition. When decentration or tilt were induced, the trifocal IOL showed negligible changes but the EDOF IOL showed a −0.50 diopters (D) shift of the overall curve. With simulated myopic ablation, the trifocal IOL showed a -0.50 D shift of the curve. When tilt or decentration were also induced, the better optical results were found at −1.00 D. With myopic ablations, the EDOF IOL showed a −0.50 D shift of the optical quality and when decentration or tilt were then induced, negative shifts over −1.00 D were found. CONCLUSIONS: The trifocal IOL was less affected by mis-alignments. When myopic ablations were induced, both lenses decreased their optical quality and the effects of misalignments were higher. In patients who have undergone corneal myopic ablation procedures, proper alignment of the implanted IOL and obtaining effective emmetropia becomes even more critical. [ J Refract Surg . 2021;37(8):532–537.]
    Type of Medium: Online Resource
    ISSN: 1081-597X
    URL: Article
    DOI: 10.3928/1081597X-20210518-03
    Language: English
    Publisher: SLACK, Inc.
    Publication Date: 2021
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  • 9
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    Online Resource
    Effects of Blink Rate on Tear Film Optical Quality Dynamics with Different Soft Contact Lenses
    Hindawi Limited ; 2019
    In:  Journal of Ophthalmology Vol. 2019 ( 2019-07-09), p. 1-8
    Details
    In: Journal of Ophthalmology, Hindawi Limited, Vol. 2019 ( 2019-07-09), p. 1-8
    Abstract: Objective . The aim of this study was to investigate tear film optical quality dynamics for four types of silicone hydrogel contact lenses (SHCLs) for daily wear over a 15-day period and for different blink rate (BR) patterns. Methods . A prospective randomized, double-blind, cross-over pilot study including four SHCLs (A: lotrafilcon B (Air Optix plus HydraGlyde, Alcon Laboratories); B: samfilcon A (Ultra, Bausch & Lomb); C: comfilcon A (Biofinity, CooperVision); and D: filcom V3 (Blu:gen, Mark’Ennovy)). Serial measurements of Objective Scatter Index (OSI) using the HD Analyzer (Visiometrics S.L., Terrassa, Spain) were taken at different blinking patterns: blinking every 2.5 seconds (high BRs) and every 9 seconds (low BRs). They were performed during the first visit before CL insertion (baseline), after 20 minutes of CL wear (Day 1), and during the last visit after 8 hours of CL wear on day 15 of use (Day 15). Results . Normal young healthy subjects were recruited and fitted with the four lenses. For low BRs, the mean OSI value increased over time for all CLs and the slope of the curve also increased for all CLs, except for CL D. However, for high BRs, the mean OSI value increased only for CLs B and C and the slope of the curve did not change over time for any of them. Conclusions . These results suggest that the tear film optical quality dynamics after wearing SCHLs for 15 days seems to undergo a slight deterioration only for lowest BR.
    Type of Medium: Online Resource
    ISSN: 2090-004X , 2090-0058
    URL: Article
    DOI: 10.1155/2019/4921538
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2019
    detail.hit.zdb_id: 2546525-9
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  • 10
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    Online Resource
    Repeatability of Noninvasive Keratograph 5M Measurements Associated With Contact Lens Wear
    Ovid Technologies (Wolters Kluwer Health) ; 2019
    In:  Eye & Contact Lens: Science & Clinical Practice Vol. 45, No. 6 ( 2019-11), p. 377-381
    Details
    In: Eye & Contact Lens: Science & Clinical Practice, Ovid Technologies (Wolters Kluwer Health), Vol. 45, No. 6 ( 2019-11), p. 377-381
    Abstract: To assess the intrarater repeatability of the measurements of tear meniscus height (TMH), noninvasive keratograph tear break-up time (NIKBUTs), and ocular redness measurements obtained with the Keratograph 5M (K5M) in a sample of soft silicone hydrogel contact lens (CL) wearers over 15 days. Methods: Prospective study over two consecutive weeks. Three measurements of TMH, NIKBUTs (NIKBUT first and NIKBUT average), and ocular redness were obtained in different sessions; the first day (baseline, at 8 hr of wear, and after lens removal) and the last day of wear—15th day (at 8 hr of wear and after lens removal). The repeatability of measurements were assessed by two intraclass correlation coefficient (ICC) forms; single measurement [ICC (2,1)] and multiple measurements (k=3) [ICC (2, k)] . Results: Sixty-four eyes were analyzed. The repeatability of baseline TMH [ICC (2,1) greater than 0.90; coefficient of repeatability (CR)=0.06 mm] and after and during CL wear [ICC (2,k) greater than 0.90; CR≤0.07 mm] were excellent. The repeatability of baseline NIKBUT average [ICC (2,k)=0.89 (0.82–0.93); CR=6.07 sec] was maintained after CL removal but was poorer during CL wear. The repeatability of baseline NIKBUT first [ICC (2,k) =0.80 (0.69–0.87); CR=8.74 sec] was maintained after CL removal and during CL wear at moderate–good level. Conclusions: Intrarater repeatability of TMH, NIKBUTs, and ocular redness performed by K5M after CL wear remains stable when three measurements are performed. However, intrarater repeatability during CL wear decreased only for NIKBUT average and was not affected by time of use (15 days).
    Type of Medium: Online Resource
    ISSN: 1542-2321
    URL: Article
    DOI: 10.1097/ICL.0000000000000596
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2019
    detail.hit.zdb_id: 2084291-0
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