Person:
Carballo Álvarez, Jesús

First Name

Jesús

Last Name

Carballo Álvarez

URI

https://hdl.handle.net/20.500.14352/79925

Affiliation

Universidad Complutense de Madrid

Faculty / Institute

Óptica y Optometría

Department

Optometría y Visión

Area

Optica

Identifiers

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Now showing 1 - 10 of 22

Clinical Performance of a New Hybrid Contact Lens for Keratoconus
(Eye & contact lens: science & clinical practice, 2014) Carracedo Rodríguez, Juan Gonzalo; González-Méijome, José Manuel; Lopes Ferreira, Daniela P.; Carballo Álvarez, Jesús; Batres Valderas, Laura
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.
Función visual en pacientes con queratocono pre y post implantación de anillos intraestromales y posterior adaptación de lentes de contacto
(2015) Carballo Álvarez, Jesús; Puell Marín, María Cinta
"OBJETIVOS": Analizar y comparar los cambios en la función visual en ojos con queratocono, pre y post implantación de anillos intraestromales(ICRS) Keraring® y la posterior adaptación de lentes de contacto hidrofílicas tóricas(LHT). "METODOS": Los ojos fueron evaluados en condiciones mesópicas(0,1-0,2 cd/m2) y fotópicas(85 cd/m2). Las agudezas visuales compensadas de alto (AVC-AC) y bajo (AVC-BC) contraste fueron medidas con la carta de Bailey-Lovie y la sensibilidad al contraste (SC) con la carta de Pelli-Robson. La adaptación de las LHT se estableció según la AVC-AC como satisfactoria (≤0,2 logMAR) o insatisfactoria (>0,2). Los pacientes en el grupo insatisfactorio fueron readaptados con sistema piggy-back (PB). "RESULTADOS": Fueron evaluados 12 ojos con estadio I de queratocono, 21 con estadio II, y 14 con estadio III (clasificación de Amsler-Krumeich). El incremento medio (logMAR) debido a la cirugía en la AVC-AC fotópica fue de 0,16 ± 0,20(P<0,00001), la AVC-BC fotópica de 0,14 ± 0,26(P=0,0005), la AVC-AC mesópica de 0,10 ± 0,26(P=0,03) y la CS fotópica (un. Log.) de 0,09 ± 0,22(P=0,005). No hubo diferencia entre estadios. No fueron significativos los cambios en la AVC-BC mesópica o la CS mesópica para ningún estadio. El straylight se incrementó en los ojos con estadio III. La adaptación de LHT fue satisfactoria en el 75%, 66.66% y el 0% de los ojos implantados con ICRS con estadios I a III respectivamente. La AVC-AC en gafas fue 1,5 líneas logMAR mayor y la potencia corneal media 3.62D más baja en el grupo satisfactorio con LHT. La adaptación de PB consiguió una AVC-AC ≤0,2 logMAR en todos los casos. El straylight no cambió. "CONCLUSIONES": La suma de la cirugía y la adaptación de lentes de contacto mejoró la función visual fotópica y mesópica en AVC-AC, AVC-BC y SC. No hubo cambio en el straylight. La integridad epitelial se mantuvo estable.
Posterior cornea and thickness changes after scleral lens wear in keratoconus patients
(Contact Lens and Anterior Eye, 2018) Serramito Blanco, María; Carpena Torres, Carlos; Carballo Álvarez, Jesús; Piñero, David Pablo; Lipson, Michael; Carracedo Rodríguez, Juan Gonzalo
Purpose: To evaluate the changes in the corneal thickness, anterior chamber depth and posterior corneal curvature and aberrations after scleral lens wear in keratoconus patients with and without intrastromal corneal ring segments (ICRS). Methods:Twenty-six keratoconus subjects (36.95 ± 8.95 years) were evaluated after 8 h of scleral lens wear. The subjects were divided into two groups: those with ICRS (ICRS group) and without ICRS (KC group). The study variables evaluated before and immediately after scleral lens wear included corneal thickness evaluated in different quadrants, posterior corneal curvature at 2, 4, 6 and 8 mm of corneal diameter, posterior corneal aberrations for 4, 6 and 8 mm of pupil size and anterior chamber depth. Results: There was a statistically significant corneal thinning (p < 0.05) in the inferior region of the KC group and in the superior region of the ICRS group. No change (p > 0.05) in the anterior chamber depth was found. The KC group showed a steepening (p < 0.05) in the temporal quadrant and a flattening that mainly affected to the superior-nasal quadrant. The ICRS group showed a steepening (p < 0.05) that mainly affected to the superior-nasal quadrant. Regarding posterior corneal aberrations, only changes (p < 0.05) in Z4 for 8 mm and Z8 for 4 mm were found in the KC group. Conclusions: Short-term scleral lens wear showed a thinning of the cornea and changes in the posterior corneal curvature affects different regions in keratoconus patients with and without ICRS.
Soft contact lens fitting after intrastromal corneal ring segment implantation to treat keratoconus
(Contact Lens and Anterior Eye, 2014) Carballo Álvarez, Jesús; Puell Marín, María Cinta; Cuiña Sardiña, Ricardo; Díaz Valle, David; Vázquez Molini, José María; Benítez del Castillo, José Manuel
PURPOSE: To assess the feasibility of fitting a lathed soft toric contact lens (STCL) after the implant of intrastromal corneal ring segments (ICRSs) to treat keratoconus. METHODS: Six months after ICRS implantation, 47 eyes of 47 patients (18-45 years) were fitted with a STCL. In each eye, we determined refractive error, uncorrected (UDVA) and corrected distance visual acuity (CDVA), and keratometry and asphericity measures. The outcome of STCL fitting was defined according to CDVA as successful (≤0.2logMAR) or unsuccessful (>0.2logMAR). Patients in the unsuccessful group were refitted with a piggy-back (PB) system. The above variables and the change in CDVA observed after STCL and PB lens fitting from spectacle CDVA were compared in the two groups. RESULTS: STCL fitting was successful in 75%, 66.66% and 0% of the ICRS implanted eyes with stages I-III keratoconus, respectively. Spectacle-CDVA was 1.5 lines better and mean corneal power was 3.62D lower in the successful STCL group. In this group, the difference in cylinder axis between spectacles and STCL was 24.25° lower. PB refitting achieved a PB-CDVA ≤0.2logMAR in all cases. A similar difference in the CDVA change achieved by contact lenses versus spectacles was observed in the successful STCL and PB refitted groups. CONCLUSION: STCL fitting is a feasible option in a large proportion of patients implanted with ICRS. When these lenses are unsatisfactory, a PB system is a good alternative.
Contrast sensitivity evaluation with filter contact lenses in patients with retinitis pigmentosa: a pilot study
(Journal of Optometry, 2011) Carracedo Rodríguez, Juan Gonzalo; Carballo Álvarez, Jesús; Loma Serrano, Elena; Felipe Márquez, Gema; Cacho, Isabel
Purpose: the aim of this pilot study was to test whether retinitis pigmentosa patients would benefit from filter contact lenses as an effective optical aid against glare and photophobia. Methods: fifteen subjects with retinitis pigmentosa were enrolled in this study. All of them were evaluated with filter soft contact lenses (MaxSight), filter glasses (CPF 527) and without filters (control). All patients were assessed for the three aid conditions by means of best corrected visual acuity (BCVA), contrast sensitivity (without glare and with central and peripheral glare)(CSV-1000) and a specific subjective questionnaire about quality of vision. Results: BCVA was slightly better with filters than without filter but the differences were not statistically significant. Contrast sensitivity without glare improved significantly with the contact lenses (p<0.05). The central glare had significant differences for the frequencies of 3 cpd and 18 cpd between the contact lens filter and the control group (p=0.021 and p=0.044, respectively). For the peripheral glare contrast sensitivity improved with contact lens versus control group for highest frequencies, 12 and 18 cpd (p<0.001 and p=0.045, respectively). According to the questionnaire the contact lens filter gave them more visual comfort than the glasses filter under the scenarios of indoors glare, outdoors activities and indoors comfort. Conclusion: the filter contact lenses seem to be a good option to improve the quality of vision of patients with retinitis pigmentosa.
Comparison of soft toric contact lenses with and without prism ballast stabilization system
(2022) Durán Prieto, Elena; González Pascual , María del Mar; Burgos Martínez, Mercedes; Carballo Álvarez, Jesús; López Alonso, José Manuel
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.
Forward light scatter and visual acuity before and after intrastromal corneal ring segment implantation at different stages of keratoconus
(Acta Ophthalmologica, 2016) Puell Marín, María Cinta; Carballo Álvarez, Jesús
Purpose: to assess forward light scatter (stray light) before and after intrastromal corneal ring segment (ICRS) implantation at different stages of keratoconus and to examine correlation between postoperative stray light and visual acuity (VA). Methods: in 27 eyes of 27 subjects with keratoconus, stray light was determined using the compensation comparison technique before and 6 months after ICRS implantation. Monocular corrected distance VA (CDVA) was measured using a high-contrast logMAR letter chart. Corneal higher-order aberrations (HOAs), contrast sensitivity (CS) and minimum corneal thickness (CT) were also measured. Results: mean CDVA was 0.42 ± 0.28 preoperatively and 0.24 ± 0.15 logMAR postoperatively (p < 0.01). Mean corneal coma-like aberration decreased postoperatively (RMS 0.55 ± 1.18 μm, p < 0.01). Minimum CT increased 25.31 ± 18.59 μm (p < 0.01). Mean preoperative and postoperative stray light were 1.36 ± 0.31 and 1.48 ± 0.32 log units, respectively (p < 0.01). Mean changes produced in stray light (worsening) were 0.03 ± 0.21 (p > 0.05) for stage I, 0.13 ± 0.14 (p = 0.013) for stage II and 0.18 ± 0.21 (p = 0.023) for stage III. Significant positive correlation (r = 0.47, p = 0.01) was detected between postoperative stray light and postoperative CDVA such that as stray light increased, CDVA worsened (higher logMAR values). Postoperative stray light was neither associated with HOAs, CS nor minimum CT. Conclusions: stray light values in these patients with keratoconus were higher than normal preoperatively. In eyes with stage II and III keratoconus, stray light increased 6 months after ICRS placement. Higher postoperative stray light was correlated with a worse visual acuity outcome.
Ocular Surface Temperature During Scleral Lens Wearing in Patients With Keratoconus
(Eye & Contact Lens: Science & Clinical Practice, 2016) Carracedo Rodríguez, Juan Gonzalo; Wang, Zicheng; Serramito Blanco, María; Martín Gil, Alba; Carballo Álvarez, Jesús; Pintor, Jesús
Objective: To evaluate the ocular surface temperature using an infrared thermography camera before and after wearing scleral lens in patients with keratoconus and correlate these results with the tear production and stability. Methods: A pilot, experimental, short-term study has been performed. Twenty-six patients with keratoconus (36.95+/-8.95 years) participated voluntarily in the study. The sample was divided into two groups: patients with intrastromal corneal ring (KC-ICRS group) and patients without ICRS (KC group). Schirmer test, tear breakup time (TBUT), and ocular surface temperature in the conjunctiva, limbus, and cornea were evaluated before and after wearing a scleral lens. Results: The patients wore the scleral lenses from 6 to 9 hours with average of 7.59+/-0.73 hours. No significant changes in Schirmer test and TBUT were found for both groups. No temperature differences were found between the KC-ICRS and the KC groups for all zones evaluated. There was a slight, but statistically significant, increase in the inferior cornea, temporal limbus, and nasal conjunctival temperature for KC-ICRS group and temporal limbus temperature decreasing for the KC group after wearing scleral lens (P<0.05). The conjunctiva and limbus temperature was statistically higher than the central cornea for both groups before and after scleral lenses wearing (P<0.05), but no difference in the peripheral cornea was found. No statistically significant differences in the central corneal temperature were found between the groups after scleral lens wearing (P>0.05). Conclusion: Scleral contact lens seems not to modify the ocular surface temperature despite the presence of the tear film stagnation under the lens.
Project number: 238
Herramientas audiovisuales online y protocolos en la formación, adaptación y gestión de lentes de contacto. Un modelo innovador en la Clínica Universitaria de Optometría de la UCM
(2018) Carballo Álvarez, Jesús; Batres Valderas, Laura; Padrino Natividad, Esther; Rodríguez-Lafora Lorente, María; Serramito Blanco, María; Martín Prieto, Marina; Niño Rueda, Aranzazu; Niño Rueda, Cristina; Álvarez Rojas, David; Bartolomé Bartolomé, Gema; Peral Cerda, María Asunción; Carpena Torres, Carlos; Bella Gala, Rafael; Carracedo Rodríguez, Juan Gonzalo; González Blanco, Félix; García Alonso, Zoe Alexandra; Sánchez Pérez, María Isabel
Con fines docentes y asistenciales, incluye Videos sobre manejo y limpieza de distintos tipos de lentes de contacto. Para la correcta formación de los estudiantes incluye varios manuales sobre el estudio ocular previo a la adaptación. Con fines asistenciales incorpora Material para acompañar la adaptación y entrega de las lentes de contacto. Para mejorar la gestión, incluye un Video-tutorial y los protocolos creados para los pedidos y gestión de las lentes de contacto.
Anterior Corneal Curvature and Aberration Changes After Scleral Lens Wear in Keratoconus Patients With and Without Ring Segments
(Eye & Contact Lens: Science & Clinical Practice, 2019) Serramito Blanco, María; Carpena Torres, Carlos; Carballo Álvarez, Jesús; Piñero, David; Lipson, Michael; Carracedo Rodríguez, Juan Gonzalo
Objective: To evaluate changes in the anterior corneal curvature and aberrometry after scleral contact lens wear in keratoconus (KC) subjects with and without intracorneal ring segments (ICRS). Methods: Twenty-six subjects diagnosed with keratoconus were selected to participate in the study. Subjects were divided into 2 groups, those with ICRS (KC-ICRS group) and those without ICRS (KC group). Subjects were instructed to wear 16.5-mm scleral lenses for 8 hours. Topographic and aberrometric parameters were evaluated before lens wear and immediately after lens removal. Anterior corneal curvature was evaluated at corneal diameters of 2, 4, 6, and 8 mm, and corneal aberrations were measured at 4-, 6-, and 8-mm pupil diameters. Results: The mean age of subjects was 36.95±8.95 years. In KC group, there was a statistically significant flattening of the central corneal curvature, from 6.98 to 7.09 mm (P<0.05). No changes were found in the central corneal curvature in the KC-ICRS group. The KC group showed anterior corneal curvature flattening, mainly in the nasal quadrant. The KC-ICRS group showed flattening primarily in the inferior hemisphere. In the KC group, spherical aberration for 6-mm pupil increased significantly. In the KC-ICRS group, changes in aberrations were significant for high-order root mean square at 4- and 6-mm pupil diameters (P<0.05), for oblique astigmatism for 4 mm and 6 mm, and for vertical coma for 4-mm pupil (P<0.05). Conclusion: Short-term scleral lens wear showed flattening of the anterior corneal surface in all subjects. In the KC group, the flattening was more pronounced in the nasal quadrant while changes were more pronounced inferiorly in KC-ICRS group.