The Experts below are selected from a list of 66 Experts worldwide ranked by ideXlab platform
Gonzalo Carracedo - One of the best experts on this subject based on the ideXlab platform.
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Comparative analysis of the visual performance and aberrometric outcomes with a new Hybrid and two silicone hydrogel multifocal Contact Lenses: a pilot study
Clinical and Experimental Optometry, 2015Co-Authors: David P. Piñero, Gonzalo Carracedo, Pedro Ruiz-fortes, Rafael J. Pérez-cambrodíAbstract:Background: The aim was to evaluate the visual performance achieved with a new multifocal Hybrid Contact Lens and to compare it with that obtained with two other currently available multifocal soft Contact Lenses. Methods: This pilot prospective comparative study comprised a total of 16 presbyopic eyes of eight patients ranging in age from 43 to 58 years. All patients were fitted with three different models of multifocal Contact Lens: Duette multifocal (SynergEyes), Air Optix AQUA multifocal (Alcon) and Biofinity multifocal (CooperVision). Fittings were performed randomly in each patient according to a random number sequence, with a wash-out period between fittings of seven days. At two weeks post-fitting, visual, photopic contrast sensitivity and ocular aberrometry were evaluated. Results: No statistically significant differences were found in distance and near visual acuity achieved with the three different types of multifocal Contact Lens (p ≥ 0.05). Likewise, no significant differences between Lenses were found in the monocular and binocular defocus curve (p ≥ 0.10). Concerning contrast sensitivity, better monocular contrast sensitivities for 6, 12 and 18 cycles per degree were found with the Duette and Air Optix multifocal compared to Biofinity (p = 0.02). Binocularly, differences between Lenses were not significant (p ≥ 0.27). Furthermore, trefoil aberration was significantly higher with Biofinity multifocal (p < 0.01) and Air Optix (p = 0.01) multifocal compared to Duette. Conclusions: The Duette multifocal Hybrid Contact Lens seems to provide similar visual quality outcomes in presbyopic patients with low corneal astigmatism, when compared with other soft multifocal Contact Lenses. This preliminary result should be confirmed in studies with larger samples.
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Clinical performance of a new Hybrid Contact Lens for keratoconus.
Eye & Contact Lens-science and Clinical Practice, 2014Co-Authors: Gonzalo Carracedo, José Manuel González-méijome, Daniela Lopes-ferreira, Jesús Carballo, Laura BatresAbstract:OBJECTIVES: To compare the clinical performance of the Clearkone Hybrid Contact Lens for the treatment of keratoconus against the habitual Contact Lens of the patients. METHODS: A total of 33 eyes from 18 patients were fitted with the Clearkone. High- and low-contrast visual acuity (HCVA and LCVA), central corneal thickness (CCT), and contrast sensitivity acuity (CSF) were recorded with habitual Lenses (prestudy visit) and after 1 week, 15 days, and 1 month of wear of prescribed Clearkone. Subjective vision and comfort were rated using visual analogue scales (VAS). RESULTS: Three patients discontinued the study, one because of diffuse corneal staining after 1 day of use and the other two because of extreme discomfort. The rest of the patients completed the 1-month study. High contrast visual acuity and LCVA (logMAR) improved significantly from 0.16 ± 0.12 and 0.44 ± 0.22, respectively, with the patient's habitual Contact Lenses to -0.006 ± 0.058 and 0.23 ± 0.13 after 1 day wearing Clearkone, remaining significant during all follow-up visits (P
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clinical performance of a new Hybrid Contact Lens for keratoconus
Eye & Contact Lens-science and Clinical Practice, 2014Co-Authors: Gonzalo Carracedo, Jesús Carballo, Jose Manuel Gonzalezmeijome, Daniela Lopesferreira, Laura BatresAbstract:OBJECTIVES: To compare the clinical performance of the Clearkone Hybrid Contact Lens for the treatment of keratoconus against the habitual Contact Lens of the patients. METHODS: A total of 33 eyes from 18 patients were fitted with the Clearkone. High- and low-contrast visual acuity (HCVA and LCVA), central corneal thickness (CCT), and contrast sensitivity acuity (CSF) were recorded with habitual Lenses (prestudy visit) and after 1 week, 15 days, and 1 month of wear of prescribed Clearkone. Subjective vision and comfort were rated using visual analogue scales (VAS). RESULTS: Three patients discontinued the study, one because of diffuse corneal staining after 1 day of use and the other two because of extreme discomfort. The rest of the patients completed the 1-month study. High contrast visual acuity and LCVA (logMAR) improved significantly from 0.16 ± 0.12 and 0.44 ± 0.22, respectively, with the patient's habitual Contact Lenses to -0.006 ± 0.058 and 0.23 ± 0.13 after 1 day wearing Clearkone, remaining significant during all follow-up visits (P<0.001; repeated measures analysis of variance [RM-ANOVA]). There were no statistically significant differences in the mean CCT. The improvement of CSF was statistically significant with Hybrid Contact Lenses prescribed compared with the patient's habitual Contact Lenses (P<0.001; RM-ANOVA test). Improvement in VAS score, with prescribed Clearkone, was statistically significant for comfort (P=0.043; RM-ANOVA test), but not for the subjective vision (P=0.759; RM-ANOVA test). CONCLUSIONS: Clearkone provides an improvement in visual acuity, contrast sensitivity, and subjective comfort in patients with keratoconus when compared with other Contact Lens options. However, clinicians must get specific training to fit the Lens and be aware of potential adverse events.
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Visual Outcomes with Contact Lenses Previous Keratoplasty
International Journal of Keratoconus and Ectatic Corneal Diseases, 2012Co-Authors: Gonzalo Carracedo, Adel BarbaraAbstract:We describe a case of a 22-year-old patient, with severe keratoconus in both eyes. Penetrating keratoplasty in left eye was performed in August 2011. The patient was awaiting postoperative stabilization of this eye prior to surgery on the right eye. Therefore, a Clearkone® Hybrid Contact Lens was fitted on the right eye to maintain corneal epithelial integrity, improve quality of vision and therefore qualify of life during this interim period. Visual acuity with the Contact Lens was +0.1 logMAR. Comfort was excellent and the patient was able to wear the Clearkone® Lens up to 12 hours per day. Similar outcomes regarding vision and comfort were obtained at follow-up visits through 9 months. In conclusion, new Hybrid Contact Lens designs for keratoconus are an excellent option for vision rehabilitation in severe cases of keratoconus which would otherwise be left with low vision for several months while waiting for keratoplasty.
Laura Batres - One of the best experts on this subject based on the ideXlab platform.
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Clinical performance of a new Hybrid Contact Lens for keratoconus.
Eye & Contact Lens-science and Clinical Practice, 2014Co-Authors: Gonzalo Carracedo, José Manuel González-méijome, Daniela Lopes-ferreira, Jesús Carballo, Laura BatresAbstract:OBJECTIVES: To compare the clinical performance of the Clearkone Hybrid Contact Lens for the treatment of keratoconus against the habitual Contact Lens of the patients. METHODS: A total of 33 eyes from 18 patients were fitted with the Clearkone. High- and low-contrast visual acuity (HCVA and LCVA), central corneal thickness (CCT), and contrast sensitivity acuity (CSF) were recorded with habitual Lenses (prestudy visit) and after 1 week, 15 days, and 1 month of wear of prescribed Clearkone. Subjective vision and comfort were rated using visual analogue scales (VAS). RESULTS: Three patients discontinued the study, one because of diffuse corneal staining after 1 day of use and the other two because of extreme discomfort. The rest of the patients completed the 1-month study. High contrast visual acuity and LCVA (logMAR) improved significantly from 0.16 ± 0.12 and 0.44 ± 0.22, respectively, with the patient's habitual Contact Lenses to -0.006 ± 0.058 and 0.23 ± 0.13 after 1 day wearing Clearkone, remaining significant during all follow-up visits (P
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clinical performance of a new Hybrid Contact Lens for keratoconus
Eye & Contact Lens-science and Clinical Practice, 2014Co-Authors: Gonzalo Carracedo, Jesús Carballo, Jose Manuel Gonzalezmeijome, Daniela Lopesferreira, Laura BatresAbstract:OBJECTIVES: To compare the clinical performance of the Clearkone Hybrid Contact Lens for the treatment of keratoconus against the habitual Contact Lens of the patients. METHODS: A total of 33 eyes from 18 patients were fitted with the Clearkone. High- and low-contrast visual acuity (HCVA and LCVA), central corneal thickness (CCT), and contrast sensitivity acuity (CSF) were recorded with habitual Lenses (prestudy visit) and after 1 week, 15 days, and 1 month of wear of prescribed Clearkone. Subjective vision and comfort were rated using visual analogue scales (VAS). RESULTS: Three patients discontinued the study, one because of diffuse corneal staining after 1 day of use and the other two because of extreme discomfort. The rest of the patients completed the 1-month study. High contrast visual acuity and LCVA (logMAR) improved significantly from 0.16 ± 0.12 and 0.44 ± 0.22, respectively, with the patient's habitual Contact Lenses to -0.006 ± 0.058 and 0.23 ± 0.13 after 1 day wearing Clearkone, remaining significant during all follow-up visits (P<0.001; repeated measures analysis of variance [RM-ANOVA]). There were no statistically significant differences in the mean CCT. The improvement of CSF was statistically significant with Hybrid Contact Lenses prescribed compared with the patient's habitual Contact Lenses (P<0.001; RM-ANOVA test). Improvement in VAS score, with prescribed Clearkone, was statistically significant for comfort (P=0.043; RM-ANOVA test), but not for the subjective vision (P=0.759; RM-ANOVA test). CONCLUSIONS: Clearkone provides an improvement in visual acuity, contrast sensitivity, and subjective comfort in patients with keratoconus when compared with other Contact Lens options. However, clinicians must get specific training to fit the Lens and be aware of potential adverse events.
Mehdi Khabazkhoob - One of the best experts on this subject based on the ideXlab platform.
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A comparison of the visual acuity outcome between Clearkone and RGP Lenses
journal of current ophthalmology, 2017Co-Authors: Mohammadali Hassani, Ebrahim Jafarzadehpur, Abbasali Yekta, Ali Mirzajani, Mehdi KhabazkhoobAbstract:Purpose To compare the visual acuity outcome of the ClearKone SynergEyes™ Hybrid Contact Lens and Boston XO rigid gas permeable (RGP) Contact Lens in patients with keratoconus.
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Estimation of the Hybrid Lens parameters through rigid gas permeable Lens fitting
journal of current ophthalmology, 2016Co-Authors: Mohammadali Hasani, Hassan Hashemi, Ebrahim Jafarzadehpur, Abbasali Yekta, Nooshin Dadbin, Mehdi KhabazkhoobAbstract:Purpose To estimate the fitting parameters of the Hybrid Contact Lens in patients with corneal ectasia using the rigid gas permeable (RGP) Lens.
Jesús Carballo - One of the best experts on this subject based on the ideXlab platform.
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Clinical performance of a new Hybrid Contact Lens for keratoconus.
Eye & Contact Lens-science and Clinical Practice, 2014Co-Authors: Gonzalo Carracedo, José Manuel González-méijome, Daniela Lopes-ferreira, Jesús Carballo, Laura BatresAbstract:OBJECTIVES: To compare the clinical performance of the Clearkone Hybrid Contact Lens for the treatment of keratoconus against the habitual Contact Lens of the patients. METHODS: A total of 33 eyes from 18 patients were fitted with the Clearkone. High- and low-contrast visual acuity (HCVA and LCVA), central corneal thickness (CCT), and contrast sensitivity acuity (CSF) were recorded with habitual Lenses (prestudy visit) and after 1 week, 15 days, and 1 month of wear of prescribed Clearkone. Subjective vision and comfort were rated using visual analogue scales (VAS). RESULTS: Three patients discontinued the study, one because of diffuse corneal staining after 1 day of use and the other two because of extreme discomfort. The rest of the patients completed the 1-month study. High contrast visual acuity and LCVA (logMAR) improved significantly from 0.16 ± 0.12 and 0.44 ± 0.22, respectively, with the patient's habitual Contact Lenses to -0.006 ± 0.058 and 0.23 ± 0.13 after 1 day wearing Clearkone, remaining significant during all follow-up visits (P
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clinical performance of a new Hybrid Contact Lens for keratoconus
Eye & Contact Lens-science and Clinical Practice, 2014Co-Authors: Gonzalo Carracedo, Jesús Carballo, Jose Manuel Gonzalezmeijome, Daniela Lopesferreira, Laura BatresAbstract:OBJECTIVES: To compare the clinical performance of the Clearkone Hybrid Contact Lens for the treatment of keratoconus against the habitual Contact Lens of the patients. METHODS: A total of 33 eyes from 18 patients were fitted with the Clearkone. High- and low-contrast visual acuity (HCVA and LCVA), central corneal thickness (CCT), and contrast sensitivity acuity (CSF) were recorded with habitual Lenses (prestudy visit) and after 1 week, 15 days, and 1 month of wear of prescribed Clearkone. Subjective vision and comfort were rated using visual analogue scales (VAS). RESULTS: Three patients discontinued the study, one because of diffuse corneal staining after 1 day of use and the other two because of extreme discomfort. The rest of the patients completed the 1-month study. High contrast visual acuity and LCVA (logMAR) improved significantly from 0.16 ± 0.12 and 0.44 ± 0.22, respectively, with the patient's habitual Contact Lenses to -0.006 ± 0.058 and 0.23 ± 0.13 after 1 day wearing Clearkone, remaining significant during all follow-up visits (P<0.001; repeated measures analysis of variance [RM-ANOVA]). There were no statistically significant differences in the mean CCT. The improvement of CSF was statistically significant with Hybrid Contact Lenses prescribed compared with the patient's habitual Contact Lenses (P<0.001; RM-ANOVA test). Improvement in VAS score, with prescribed Clearkone, was statistically significant for comfort (P=0.043; RM-ANOVA test), but not for the subjective vision (P=0.759; RM-ANOVA test). CONCLUSIONS: Clearkone provides an improvement in visual acuity, contrast sensitivity, and subjective comfort in patients with keratoconus when compared with other Contact Lens options. However, clinicians must get specific training to fit the Lens and be aware of potential adverse events.
Laura E. Downie - One of the best experts on this subject based on the ideXlab platform.
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Predictive Value of Corneal Topography for ClearKone Hybrid Contact Lenses
Optometry and Vision Science, 2013Co-Authors: Laura E. DownieAbstract:Purpose. The purpose of this study was to evaluate the predictive value of corneal topography data for fitting ClearKone Hybrid Contact Lenses on eyes with corneal ectasia. Methods. Ophthalmic records from eyes with established corneal ectasia that had been successfully fitted with SynergEyes ClearKone Lenses (n = 73) were retrospectively reviewed. Correlations between corneal parameters (simulated steep and flat keratometry values, average corneal sagittal height, inferior-superior index for keratoconus, corneal eccentricity, cone displacement, and cone diameter) and ClearKone Lens parameters (vault and skirt curvature) were analyzed. Results. Two topographical correlates to ClearKone Lens parameters were identified. Mean weighted corneal sagittal height at a 7.4-mm chord was strongly predictive of the optimal ClearKone Lens vault; a linear relationship was observed between these parameters (R 2 = 0.96). More significant vertical decentration of the corneal apex was found to be associated with the need for a steeper Lens skirt curvature (p G 0.05). Conclusions. This study demonstrates that baseline corneal topographyYderived data are valuable for predicting Lens parameters for an optimally fit SynergEyes ClearKone Hybrid Contact Lens. (Optom Vis Sci 2013;90:00Y00)
