Person: García Montero, María
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First Name
María
Last Name
García Montero
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Óptica y Optometría
Department
Optometría y Visión
Area
Optica
Identifiers
13 results
Search Results
Now showing 1 - 10 of 13
Item Randomized crossover trial of silicone hydrogel contact lenses(Contact Lens and Anterior Eye, 2018) García Montero, María; Rico del Viejo, Laura; Llorens Quintana, Clara; Lorente Velázquez, Amalia; Hernández Verdejo, José Luis; Madrid Costa, DavidPurpose: The aim of the current study is to assess, using new technologies, the interaction of four monthly silicone hydrogel contact lenses on the ocular surface and the comfort over 15 days of use. Methods: Prospective cross-over, randomized and double-masked study including four materials (lotrafilcon-B, samfilcon-A , comfilcon-A and filcom-V3). Clinical examination was performed in the following order: tear meniscus height, first break-up of the tear film, the average time of all tear film breakup incidents, bulbar redness, limbal redness (Keratograph 5M ,Oculus, Germany); central corneal thickness (Pentacam, Oculus, Germany), thermography values (FLIR A325; FLIR Systems Inc., USA), and slit-lamp evaluations, including ocular surface staining. Finally, subjective comfort was obtained from Contact Lens Dry Eye Questionnaire-8. Results: The impact of contact lens wear on the ocular surface didn’t show statistically significant changes over time except for corneal and conjunctival staining grades on day 15 compared to day 1 for the comfilcon A group (P = .003 and P = .01, respectively). Contact lens stability and impact on the ocular surface during contact lens wear didn’t show statistically significant changes over time except in the case of the comfilcon A material with respect to the irritation item (P = .01). Conclusions: These results suggest that the impact of monthly silicone hydrogel contact lens materials on the ocular surface after and during contact lens wear, contact lens stability over time, and subjective comfort did not reveal any significant changes over 15 days of use for any of the materials.Item Effects of Blink Rate on Tear Film Optical Quality Dynamics with Different Soft Contact Lenses(Journal of Ophthalmology, 2019) García Montero, María; Rico del Viejo, Laura; Martínez Alberquilla, Irene; Hernández Verdejo, José Luis; Lorente Velázquez, Amalia; Madrid Costa, DavidObjective. 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.Item Comparison of the impact of nesofilcon A hydrogel contact lens on the ocular surface and the comfort of presbyopic and non-presbyopic wearers(International journal of ophthalmology, 2019) Lorente Velázquez, Amalia; García Montero, María; Gómez Sanz, Fernando Javier; Rico del Viejo, Laura; Hernández Verdejo, José Luis; Madrid Costa, DavidAIM: To assess and compare the impact of a daily disposable contact lens (CL) with high water content on the ocular surface and comfort of the presbyopic and non-presbyopic population after one day of use. METHODS: Totally 20 presbyopes and 30 non-presbyopes non-contact wearers were fitted with nesofilcon A CLs. CL thickness was measured to assess material stability during daily wear, and ocular surface parameters were also assessed. Optical quality was analyzed for all cases. In addition, CL comfort was rated. RESULTS: No significant differences were found in CL thickness, tear film osmolarity, average tear break-up time, bulbar redness, central corneal thickness, corneal volume, root-mean-square of higher-order aberrations (RMS of HOAs) and vertical and horizontal coma, either as a function of the group or time of use. A significant decrease in tear meniscus height and first break-up of the tear film was found in the presbyopic group (P=0.038; P=0.007 respectively). A decrease in spherical aberration coefficient was found after CL insertion (P=0.031 monofocal CL; P=0.023 low addition multifocal CL; P=0.016 high addition multifocal CL). Multifocal CL were thicker than monofocal CL (P=0.045). Comparison between groups showed more discomfort in presbyopes than non-presbyopes (P=0.003). CONCLUSION: This study evidence that the behavior of the daily disposable CL with high water content seems to be stable during the day of use. Ocular parameters measured during wear show that CL behavior is the same for presbyopes and non-presbyopes, being more uncomfortable for presbyopes.Item 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, FranciscoPurpose: 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.Item 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 AntonioThe 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.Item 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, MaríasettingsOrder 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.Item Design of an optical bench for polychromatic characterisation of advanced intraocular lens designs with spatial light modulator(2023) González Fernández, Verónica; Garzón Jiménez, Nuria; García Montero, María; Gómez Pedrero, José Antonio; Fernandez Nuñez, Sara; Albarrán Diego, CésarIn recent years, the design of intraocular lenses (IOLs) has experienced a great deal of development and there is now a wide variety of designs. At the moment, some of the most interesting designs that allow for the greatest degree of innovation and customisation are lenses that combine a refractive part with a diffractive partItem Nonsurgical Procedures for Keratoconus Management(Journal of Ophthalmology, 2017) Rico Del Viejo, Laura; García Montero, María; Hernández Verdejo, José Luis; García Lázaro, Santiago; Gómez Sanz, Fernando Javier; Lorente Velázquez, AmaliaObjectives. To describe the past 20 years’ correction modalities for keratoconus and their visual outcomes and possible complications. Methods. A review of the published literature related to the visual outcomes and possible complications in the context of keratoconus management using nonsurgical procedures for the last 20 years (glasses and contact lenses) was performed. Original articles that reported the outcome of any correction modalities of keratoconus management were reviewed. Results. The most nonsurgical procedure used on keratoconus management is the contact lens fitting. Soft contact lenses and soft toric contact lenses, rigid gas-permeable contact lenses, piggyback contact lens system, hybrid contact lenses, and scleral and corneoscleral contact lenses form the contemporary range of available lens types for keratoconus management with contact lenses. All of them try to restore the vision, improve the quality of life, and delay surgical procedures in patients with this disease. Complications are derived from the intolerance of using contact lens, and the use of each depends on keratoconus severity. Conclusions. In the context of nonsurgical procedures, the use of contact lenses for the management of keratoconic patients represents a good alternative to restore vision and improve the quality of live in this population.Item Impact of Lens Material on Objective Refraction in Eyes with Trifocal Diffractive Intraocular Lenses(Current Eye Research, 2021) Garzón Jiménez, Nuria; Poyales, Francisco; García Montero, María; Vega, FIdel; Sagrario Millán, María; Albarrán Diego, CésarPurpose: Compare subjective (Rx) and objective (ObjRx) refractions outcomes with two autorefractors models and an aberrometer in eyes implanted with a hydrophobic trifocal IOL (FineVision POD F GF, Physiol, Liége, Belgium) and a hydrophilic one (FineVision POD F, Physiol, Liége, Belgium). Methods: Prospective comparative cohort study, with 100 subjects randomly assigned to either the POD F group (n = 50) or the POD F-GF group (n = 50). Postoperative eye examinations at 1-month visit included seven result sets, one for each assessment method: Rx, AR (automated refraction measured with the autorefractor KR8800), WF-P (Zernike-coefficients-based objective refraction, photopic pupil size), WF-M (Zernike-coefficients-based objective refraction, mesopic pupil size), WF-4 (Zernike-coefficients-based objective refraction, 4 mm pupil), OPD-C (automated refraction measured with the aberrometer OPD in the central pupil/photopic conditions), and OPD-M (automated refraction measured with the aberrometer OPD under mesopic conditions). Results: Mean differences between ObjRx and Rx reached statistical significance for sphere and spherical equivalent (M) only with OPD-C in the POD F-GF group. All ObjRx methods showed significant differences with Rx in the POD F group, with some values differing by more than 0.50 D (-0.58 D in M for the WF-P). Bland Altman plots showed better agreement for the astigmatic components and for sphere and spherical equivalents in both IOL groups measured with AR and OPD-M. Conclusions: None of the objective methods of refraction evaluated in this study were as reliable as the subjective refraction, irrespective of the lens material, but POD F-GF ObjRx seems to differ less with Rx than POD F ObjRx values.Item Influence of Instrumental Factors in the Measurement of Power Profiles of Intraocular Lenses with a Commercial Deflectometer(Applied Sciences, 2023) Gómez Pedrero, José Antonio; Albarrán Diego, César; García Montero, María; Garzón Jiménez, Nuria; González Fernández, VerónicaDeflectometry is an optical technique for determining properties such as power distribution, wavefront, etc., and measurement of the optical properties of an intraocular lens can provide relevant information for clinicians. The aim of the current study was to establish a protocol for measuring lens power maps and profiles of various optical designs of intraocular lenses with a deflectometer based on the phase-shifting Schlieren principle (NIMO TR1504, Lambda-X, Nivelles, Belgium). The results are discussed with respect to accuracy and repeatability, the influence of the use of filters, and whether to consider the intraocular lens as a thin or thick lens.