Person:
Garzón Jiménez, Nuria

First Name

Nuria

Last Name

Garzón Jiménez

URI

https://hdl.handle.net/20.500.14352/79975

Affiliation

Universidad Complutense de Madrid

Faculty / Institute

Óptica y Optometría

Department

Optometría y Visión

Area

Optica

Identifiers

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Search Results

Now showing 1 - 10 of 26

Pre-operative simulation of post-operative multifocal vision
(Biomedical Optics Express, 2019) Maria Viñas; Sara Aissati; Mercedes Romero; Clara Benedi-Garcia; Nuria Garzon; Francisco Poyales; Carlos Dorronsoro; Susana Marcos; Garzón Jiménez, Nuria
While multifocal intraocular lenses (MIOLs) are increasingly implanted to correct for presbyopia, how one sees with a multifocal correction is hard to explain and imagine. The current study evaluates the quality of various visual simulating technologies by comparing vision with simulated MIOLs pre-operatively and the implanted MIOLs post-operatively in the same patients. Two simulation platforms were used: (1) a custom-developed adaptive optics (AO) system, with two visual simulator devices: a spatial light modulator (SLM) and an optotunable lens operating under temporal multiplexing (SimVis); and (2) a wearable, binocular, large field of view SimVis2Eyes clinical simulator (SimVis Gekko, 2Eyes Vision, Madrid, Spain). All devices were programmed to simulate a trifocal diffractive MIOL (POD F, FineVision, PhysIOL). Eight patients were measured pre-operatively simulating the trifocal lens and post-operatively with implantation of the same MIOL. Through-focus decimal visual acuity (TF VA) was measured (1) monocularly in monochromatic light using a four-alternative-forced-choice procedure in the AO system, and (2) binocularly using a clinical optotype in white light. Visual simulations pre-operatively predict well the TF VA performance found post-operatively in patients implanted with the real IOL. The average RMS difference between TF curves with the different visual simulators was 0.05 ± 0.01. The average RMS difference between the TF VA curves with the SimVis pre-operatively and the real MIOL post-operatively was 0.06 ± 0.01 in both platforms, and it was higher in cataract eyes (0.08 ± 0.01, on average across simulators) than in eyes with clear lens. In either group, the shape of the TF curves is similar across simulators and pre-and post-operatively. TF curves cross-correlated significantly between simulators (lag k = 0, rho = 0.889), as well as with results with the real MIOL implanted (lag k = 0, rho = 0.853). Visual simulations are useful programmable tools to predict visual performance with MIOLs, both in an AO environment and in a clinical simulator. Pre-operative visual simulations and post-operative data are in good agreement.
Visual and Refractive Outcomes after Bilateral Implantation of an Enhanced Monofocal IOL: a Prospective study.
(Journal of Cataract & Refractive Surgery, 2024) García Bella, Javier; Burgos Blasco, Bárbara; Vidal Villegas, Beatriz; Garzón Jiménez, Nuria; Villanueva Gómez-Chacón, Celia; García Feijoo, Julián
Purpose: To evaluate visual and refractive outcomes, as well as patient satisfaction after bilateral implantation of an enhanced monofocal intraocular lens (IOL) with emmetropia as a target refraction. Setting: San Carlos Hospital, Madrid, Spain. Design: Prospective, monocentric, non-comparative study. Methods: Adults 21 years or older suitable for cataract surgery and with corneal astigmatism < 1.50D were bilaterally implanted with the RayOne EMV IOL and followed up for 3-months. Outcomes measures included refraction, monocular and binocular uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), uncorrected intermediate visual acuity (UIVA), distance corrected intermediate visual acuity (DCIVA), and defocus curve, aberrometry, and satisfaction. Visual symptoms were assessed using the CatQuest-9SF questionnaire. Results: 50 eyes of 25 patients were included. At Month-3, the mean manifest spherical equivalent was -0.39 ± 0.28 D, with all eyes within 1.00 D. Binocularly, uncorrected, at distance, 68% of patients could read ≤ 0.0 logMAR and 95% ≤ 0.2 logMAR; at intermediate 59% of patients could read ≤0.1 and 100% ≤ 0.2 logMAR. Mean monocular CDVA was -0.03 ± 0.06 logMAR and mean monocular DCIVA was 0.28 ± 0.07 logMAR. Binocular defocus curve demonstrated a visual acuity ≤ 0.2 logMAR over a 2 D range from +1.00 D to -1.25 D. Satisfaction was good in 96% of patients. Conclusion: Bilateral implantation of an enhanced monofocal IOL with emmetropia as a target provided excellent binocular CDVA and good DCIVA, with a high level of satisfaction.
Equivalence of two optical quality metrics to predict visual acuity of multifocal pseudophakic patients
(Biomedical Optics Express, 2020) Armengol Cebrian, Jesús; Garzón Jiménez, Nuria; Vega Lerin, Fidel; Altemir Gómez, Irene; Millán García Varela, María Sagrario
This article studies the relationship between two metrics, the area under the modulation transfer function (MTFa) and the energy efficiency (EE), and their ability to predict the visual quality of patients implanted with multifocal intraocular lenses (IOLs). The optical quality of IOLs is assessed in vitro using two metrics, the MTFa and EE. We measured them for three different multifocal IOLs with parabolic phase profile using image formation, through-focus (TF) scanning, three R, G, B wavelengths, and two pupils. We analyzed the correlation between MTFa and EE. In parallel, clinical defocus curves of visual acuity (VA) were measured and averaged from sets of patients implanted with the same IOLs. An excellent linear correlation was found between the MTFa and EE for the considered IOLs, wavelengths and pupils (R2 > 0.9). We computed the polychromatic TF-MTFa, TF-EE, and derived mathematical relationships between each metrics and clinical average VA. MTFa and EE proved to be equivalent metrics to characterize the optical quality of the studied multifocal IOLs and also in terms of clinical VA predictability.
Development of an algorithm to track blinks from a face video
(Proceedings. International Online Symposium of Young Optometrists (SIYO 2022), 2022) Marrakchi, Youssef; López Alonso, José Manuel; Garzón Jiménez, Nuria; González Pérez, Mariano; Universidad de Valencia
The VI International Symposium of Young Optometrists (SIYO 2022) took place from November 14-28 2022 in its usual online format. This conference aims to create a space where young optometry students and optometry practitioners are the protagonists. This book of proceedings contains the abstracts of the different contributions to the conference. Its contents are organizing in two sections: invited and sponsored oral communication and workshops, and free communication. This last section is divided in oral communications and poster communications, comprising the conference’s different thematic areas. The Organizing Committee thanks all the young and senior researchers that have contributed their work to the conference, the members of the Scientific Commettee for their careful reviews of the works and the different enterprises and accademic or offical entities that have sponsored this event.
Optical Performance of a Monofocal Intraocular Lens Designed to Extend Depth of Focus
(Journal of Refractive Surgery, 2020) Vega, Fidel ; Millán, María Sagrario ; Gil, Miguel A. ; Garzón Jiménez, Nuria
Purpose: To test the performance of a new monofocal intraocular lens, intended to extend depth of focus (Tecnis Eyhance, ICB00; Johnson & Johnson Vision, Inc) (ICB-IOL), in comparison to a standard monofocal IOL (Tecnis 1-piece, ZCB00; Johnson & Johnson Vision, Inc) (ZCB-IOL) of the same platform and material. Methods: Assessment of the optical performance of the two IOLs was made in vitro using an optical test bench with a model eye. The spherical aberration, modulation transfer function (MTF), and area under the MTF (MTFa) were obtained for pupil sizes ranging from 2 to 5 mm. Through-focus MTFa curves between -3.00 and +1.00 diopters (D) were obtained with three pupil sizes (2, 3, and 4.5 mm). Halo formation was also assessed for both lenses. Results: The ICB-IOL had slightly worse optical quality at its best focus (ie, lower MTF scores at distance vision) and more negative spherical aberration than the ZCB-IOL for pupils ranging from 2 to 3 mm. The maximum of the through-focus MTFa curve of the ICB-IOL with a 2-mm pupil shifted to a myopic defocus of -0.50 D. For larger pupils (≥ 3.5 mm), there were no differences in spherical aberration, MTF scores, and halo energy between the two lenses. Conclusions: The new ICB-IOL is a modified monofocal lens with 0.50 D of additional power in its central 2-mm zone and more negative spherical aberration values, which induce a myopic shift of the maximum of optical quality and could improve intermediate vision. For pupils larger than 3.5 mm, there were no differences between IOLs. The new ICB-IOL design would produce photic phenomena comparable to a standard IOL.
Influence of angle kappa on visual and refractive outcomes after implantation of a diffractive trifocal intraocular lens
(Journal of cataract and refractive surgery, 2020) Garzón Jiménez, Nuria; García Montero, María; López Artero, Esther; Albarrán Diego, Cesar Antonio; Pérez Cambrodí, Rafael José; Illarramendi Mendicute, Igor; Poyales Galán, Francisco
Purpose: To evaluate changes in angle kappa following the implantation of a trifocal intraocular lens (IOL), and to assess the postoperative outcomes of patients with different angle kappa values. Setting: IOA Madrid Innova Ocular, Madrid, Spain Design: Prospective trial Methods: Sixty-three patients due to have bilateral implantation of the diffractive trifocal IOL (POD F, PhysIOL, Belgium) were included. Pupil offset was used as the best estimate of angle kappa and was measured using Pentacam (Oculus, Wetzlar, Germany) preoperatively and at 3-months after surgery. Postoperative refractive outcomes (sphere, cylinder, and MRSE) and visual outcomes at far, intermediate and near distance were assessed and compared between eyes with small pupil offset and eyes with large pupil offset. Quality of vision was assessed using a subjective questionnaire. Results: There was significant decrease in pupil offset post-operatively (mean: 0.197 ± 0.12 mm) compared to preoperatively (mean: 0.239 ± 0.12 mm), with a mean decrease of -0.042 mm (P = 0.0002). The same significant decrease was found for both the right eyes and left eyes, when analysed separately. No statistically significant difference was found in any of the refractive and visual acuity outcomes between eyes with small pupil offset and eyes with large pupil offset. The majority of patients (14 out of 16) complaining of significant halos had eyes with small pupil offset. Conclusion: Large pupil offset did not negatively affect visual and refractive outcomes. The tolerance to larger pupil offset might be due to the IOL optical design, with the first diffractive ring being larger than other commonly used multifocal IOLs. More studies comparing various diffractive IOL models will be useful to confirm such hypothesis.
Optical Behavior of an Enhanced Monofocal Intraocular Lens Compared with a Standard One
(Applied Sciences, 2023) Albarrán Diego, César; García Montero, María; Garzón Jiménez, Nuria; González Fernández, Verónica; Gómez Pedrero, José Antonio
The aim of this work was to compare an enhanced monofocal (RayOne EMV RAO200E, Rayner) and standard monofocal (RayOne RAO600C Aspheric, Rayner) intraocular lenses (IOLs) for three nominal powers (+10.00 D, +20.00 D and +30.00 D) as a function of the optical aperture diameter (pupil diameter) using a commercial Schlieren phase-shifting deflectometer NIMO TR1504 (Lambda-X, Belgium). From the wavefront maps measured by this instrument, the radial power profiles, the spherical aberration coefficients of the Zernike polynomial expansion (as a function of the optical aperture radius), and the root-mean-square (RMS) of the high-order aberrations (HOAs) were obtained and analyzed by comparing the two models. The results showed that the effective added power that could be obtained with the enhanced model depended directly on the pupil size and the power of the IOL implanted. The higher additions were achieved with the higher nominal IOL powers. The relationship between the pupil diameter, the corneal aberration of the patients and the power profile of these IOLs could have a crucial implication on the far distance and the final effective addition. However, it is important to note that these findings should be clinically validated through the implantation of these models in patients’ lenses.
Changes in Accommodative and Binocular Function following Phakic Intraocular Lens for High and Low-to-Moderate Myopia
(International Journal of Environmental Research and Public Health, 2022) López Artero, Esther; Poyales Galán, Francisco; Garzón Jiménez, Nuria; Matamoros Hondarza, Alicia; Sáenz, Alba; Zhou, Ying; García Montero, María
settingsOrder Article Reprints Open AccessArticle Changes in Accommodative and Binocular Function following Phakic Intraocular Lens for High and Low-to-Moderate Myopia by Esther López-Artero 1ORCID,Francisco Poyales 1,Nuria Garzón 1,2ORCID,Alicia Matamoros 1,Alba Sáez 1,Ying Zhou 3ORCID andMaría García-Montero 1,2,* 1 Miranza Group, C/Galileo 104, 28003 Madrid, Spain 2 Optometry and Vision Department, Faculty of Optics and Optometry, Complutense University of Madrid, 28037 Madrid, Spain 3 OCULUS Iberia, S.L., Tres Cantos, 28760 Madrid, Spain * Author to whom correspondence should be addressed. Int. J. Environ. Res. Public Health 2022, 19(11), 6716; https://doi.org/10.3390/ijerph19116716 Received: 27 April 2022 / Revised: 27 May 2022 / Accepted: 28 May 2022 / Published: 31 May 2022 Download Versions Notes Abstract The aim was to evaluate accommodative and binocular function of phakic intraocular lens implantable collamer lens (ICL) in high and low-to-moderate myopia. Prospective comparative cohort study with 38 myopic patients who underwent ICL implantation were divided into two groups of 19 patients, each one based on the spherical equivalent (SE): high-power (SE ≤ −6 D) and low-to-moderate (SE > −6 D). The push-up amplitude of accommodation (AA), monocular accommodative facility (MAF), distance and near ocular deviation, near convergence amplitude, near point convergence (NPC), stereopsis, and accommodative convergence/accommodation (AC/A) ratio were assessed before surgery and 1 week and 1 month postoperatively. The mean residual refractive error at 1 month after surgery improved in both groups, 0.18 ± 0.34 D and 0.09 ± 0.26 D, respectively (p < 0.001). There was a significant decrease in AA in both groups between preoperatively and at 1-week (p = 0.001; p = 0.008, respectively) and 1-month follow-up (p = 0.001; p = 0.008). For the rest of the binocular measurements, no statistically significant postoperative changes were found in any group. This finding suggests follow-up studies on amplitude of accommodation in phakic intraocular lens ICL implantation.
Agreement between the biometric measurements used to calculate the size of the implantable collamer lenses measured with four different technologies
(Indian Journal of Ophthalmology, 2022) Calvo Sanz, Jorge Antonio; Poyales Galán, Francisco; Zhou, Ying; Arias Puente, Alfonso; Garzón Jiménez, Nuria
Purpose: To evaluate the agreement between the biometric measurements used to calculate the size of the implantable collamer lenses (ICL) with different technologies: swept-source optical coherence tomography, spectral domain optical coherence tomography, and Scheimpflug tomography. Methods: This retrospective observational study included subjects undergoing refractive surgery with posterior chamber phakic IOL implantation to correct their myopia. The anterior chamber depth (ACD) and the horizontal white to white (WTW) or the angle to angle (ATA) distance were measured with the following four devices: the IOLMaster 700 biometer (Carl Zeiss Meditec, Jena, Germany), based on swept-source optical coherence tomography; the Cirrus and Visante optical coherence tomographs (Carl Zeiss Meditec) based on low-coherence interferometry; and the Pentacam rotating Scheimpflug camera (Oculus, Wetzlar, Germany). Results: In the horizontal corneal diameter measurements, there were statistically significant differences between Pentacam–IOLMaster 700 pair (P < 0.001) and Pentacam–Visante pair (P < 0.001). WTW from CIRRUS showed the lowest correlation when paired with Pentacam and IOLMaster 700 (R2 = 0.452 and 0.385 for Visante and R2 = 0.494 and 0.426 for Cirrus). Regarding the linear correlation of the ACD measurements, all pairs of devices were statistically significant and all of them showed a very good correlation index. Conclusion: There is a good agreement between the different devices under evaluation for ACD measurements. As for WTW, the values measured with the different devices showed large discrepancies with low correlation levels, especially when comparing the tomographs with the other devices under evaluation.
Comparison of 3-month visual outcomes of a spherical and a toric trifocal intraocular lens
(Journal of Cataract & Refractive Surgery, 2018) Poyales Galán, Francisco; Garzón Jiménez, Nuria
Purpose: To evaluate visual outcomes and satisfaction after implantation of 2 trifocal intraocular lenses (IOLs): a spherical IOL and a toric IOL. Setting: IOA Madrid Innova Ocular, Madrid, Spain. Design: Prospective, controlled clinical trial. Methods: Patients (>50 years) were implanted bilaterally with either a trifocal spherical hydrophilic IOL (FineVision POD F) if corneal astigmatism was 1.0 diopter (D) or less, or with a trifocal toric hydrophilic IOL (FineVision POD FT) if astigmatism was more than 1.0 D. Outcomes analyzed 3 months after surgery included monocular and binocular visual acuities at distance, near, and intermediate, both uncorrected and corrected. Defocus curves, contrast sensitivity, and patient satisfaction were also assessed. Results: There was no statistically significant difference between groups in monocular uncorrected distance (UDVA) (P = .38), monocular corrected distance (CDVA) (P = .22), or distance-corrected intermediate (DCIVA) (P = .95) visual acuities; however, the distance-corrected near visual acuity (DCNVA) was slightly better in the spherical IOL group (P = .008). The UDVA was 20/25 or better in 89% of eyes in the spherical IOL group and 93% in the toric IOL group. The DCIVA was 20/32 or better in 92% of eyes in the spherical IOL group and 93% in the toric IOL group at 80 cm (Radner Vissum chart), and 20/32 or better in 100% of eyes in both groups at 63 cm (Colenbrander chart). The DCNVA (Radner chart) was 20/32 or better in 89% of eyes in the spherical IOL group and 90% of eyes in the toric IOL group. There was no difference between the groups in contrast sensitivity, defocus curves, cylinder, or satisfaction results. Conclusion: Patients had significant improvement in visual acuity and gained functional uncorrected visual acuity across all distances in both groups. Satisfaction was high with both IOLs.