Valores de normalidad de sensibilidad retiniana y fijación foveal mediante microperimetría fotópica y escotópica en población sana / Fotopic and scotopic retinal sensitivity and foveal fixation normal values using microperimetry in healthy population

Objetivo Analizar los valores de sensibilidad retiniana y fijación foveal, en población sana, en condiciones fotópicas y escotópicas usando el microperímetro MP3-S (Nidek, Gamagori, Japón). Métodos Estudio observacional, transversal, unicéntrico. Se realizó una microperimetría (MP) fotópica y escotópica con una rejilla de estímulos personalizada de 13 puntos centrada en fóvea de 4,5×4,5mm en voluntarios sanos, sin enfermedad ocular. Se utilizó el ICC para evaluar la fiabilidad de la MP fotópica y escotópica. Resultados Se evaluaron 102 ojos de 54 voluntarios sanos (edad media: 49,8±15 años). La sensibilidad retiniana media (SRM) en la prueba fotópica y escotópica fue de 28,87±3,3 y 15,72±1,9dB, respectivamente. No se hallaron diferencias al comparar la SRM por grupo de sexos. Sin embargo, al analizar la SRM por grupos de edad se encontraron diferencias estadísticamente significativas en ambas modalidades de la prueba, siendo mayor la SRM en el grupo de sujetos menores de 35 años, con 30,3±1,7dB en la fotópica y 16,3±1,3dB en la escotópica, y menor en el grupo de mayores de 65 años, con 26,7±2,2dB en la fotópica y 13,8±1,8dB en la escotópica, con p=0,0001. En el análisis de fiabilidad, el coeficiente alfa de Cronbach reveló una excelente fiabilidad de la MP fotópica (0,958) y una buena fiabilidad de la MP escotópica (0,841). Conclusión La MP es un test con buena fiabilidad tanto en condiciones fotópicas como escotópicas. La SRM en condiciones fotópicas y escotópicas no difiere según el sexo, pero sí disminuye con la edad. Existe una correlación positiva entre la SRM fotópica y la escotópica (AU)

Purpose To determine normal values of fotopic and scotopic retinal sensitivity and foveal fixation obtained by microperimetry, using MP3-S microperimeter (Nidek, Gamagori, Japan), in a healthy population. Methods Observational, cros-sectional, single centre study. Fotopic and scotopic microperimetry (MP) was performed using with a customized 13-point fovea-centered pattern in healthy volunteers without ocular pathology. A intraclass correlation coefficient was performed to evaluate fotopic and scotopic MP reliability. Results We analyzed 102 eyes of 54 healthy volunteers (mean age 49.8±15 years old). The fotopic and scotopic mean retinal sensitivity (MRS) was 28.87±3.3dB and 15.72±1.9dB (95% CI 15.35-16.09), respectively, showing a significant statistical difference (P<.05). No differences were found when comparing MRS by gender group. However, when analyzing the MRS by age groups, statistically significant differences were found in both modalities of the test, MRS being higher in the group of subjects under 35 years of age, with 30.3±1.7dB in the photopic and 16.3±1.3dB in the scotopic, and lower in the group of older than 65 years, with 26.7±2.2dB in the photopic and 13.8±1.8dB in the scotopic, with P=.0001. The reliability analysis of both tests revealed an excellent reliability of the fotopic MP with a Cronbach alpha of 0.958 and a good reliability of 0.841 in scotopic MP. Conclusion MP is a test with good reliability both under photopic and scotopic conditons. MRS and fixation stability under photopic and scotopic conditions do not differ according to sex, but it does decrease with age. There is a positive correlation between photopic and scotopic MRS (AU)

Fotopic and scotopic retinal sensitivity and foveal fixation normal values using microperimetry in healthy population.

PURPOSE: To determine normal values of fotopic and scotopic retinal sensitivity and foveal fixation obtained by microperimetry, using MP3-S microperimeter (Nidek, Gamagori, Japan), in a healthy population. METHODS: Observational, crossectional, single centre study. Fotopic and scotopic microperimetry was performed using with a customized 13-point fovea-centered pattern in healthy volunteers without ocular pathology. A intraclass correlation coefficient (ICC) was performed to evaluate fotopic and scotopic microperimetry reliability. RESULTS: We analyzed 102 eyes of 54 patients with a mean age of 49.8 +/- 15 years old. The fotopic and scotopic mean retinal sensitivity (MRS) was 28.55±3.3dB (95% CI=[27.87-29.23]) and 15.72±1.9dB (95% CI=[15.35-16.09]) respectively, showing a significant statistical difference (p<0.05). No differences were found when comparing SRM by gender group. However, when analyzing the SRM by age groups, statistically significant differences were found in both modalities of the test; SRM being higher in the group of subjects under 35 years of age with 30.3±1.7dB in the photopic and 16.3±1.3dB in the scotopic; and lower in the group of older than 65 years with 26.7±2.2dB in the photopic and 13.8±1.8dB in the scotopic with p=0.0001. The reliability analysis of both tests, revealed an excellent reliability of the fotopic microperimetry with a Crombach alpha of 0.958 and a good reliability of 0.841 in scotopic microperimetry. CONCLUSIONS: Microperimetry is a test with good reliability both under photopic and scotopic conditions. SRM and fixation stability under photopic and scotopic conditions do not differ according to sex, but it does decrease with age. There is a positive correlation between photopic and scotopic SRM.

Estudio del fluido tomográfico y concordancia en su detección entre médicos residentes en pacientes näive con degeneración macular asociada a la edad (DMAE) neovascular / Resident physician concordance in tomographic fluid detection in näive patients with neovascular age-related macular degeneration (AMD)

Objetivo Describir la presencia de fluido subretiniano (FSR), fluido intrarretiniano (FIR) y fluido sub-epitelio pigmentario de la retina (FSEPR) en pacientes näive con degeneración macular asociada a la edad (DMAE) neovascular exudativa en el momento basal y al año de seguimiento y tratamiento, en nuestra práctica clínica, y realizar un análisis de concordancia entre médicos residentes. Método Se realizó un análisis retrospectivo de los pacientes näive que acudieron a nuestro servicio durante 6meses, entre 2016 y 2017, por DMAE neovascular. Las tomografías de coherencia óptica (OCT), del momento basal y al año de seguimiento, fueron analizadas de forma independiente por dos médicos residentes, determinando la presencia o no de FSR, FIR y FSEPR. Un oftalmólogo especialista en retina intervino en los casos en que no hubo consenso entre los médicos residentes. Se realizó un análisis descriptivo y de concordancia interobservador. Resultados Se evaluaron 28 ojos de 24 pacientes, siendo el 20,8% hombres y el 79,16% mujeres, con una edad media de 78,57±8años. El 32,14% de los ojos presentaron los tres tipos de fluido antes del inicio del tratamiento. La frecuencia de los diferentes fluidos en el inicio y al final del seguimiento fueron, respectivamente: FSR, 82,1 y 50%; FIR, 57,1 y 41,7%, y FSEPR, 67,9 y 79,2%. El análisis kappa de concordancias interobservador en la evaluación de los diferentes fluidos en el inicio y al final del seguimiento fueron, respectivamente: FSR, 0,88 y 0,67; FIR, 0,86 y 0,91, y FSEPR, 0,65 y 0,78. Conclusiones La presencia de FSR, FIR y FSEPR en práctica clínica en el debut de la DMAE neovascular tiene una distribución similar a la presentada en ensayos clínicos internacionales. La concordancia entre médicos residentes es muy buena para el FSR y FIR y buena para el FSEPR en el debut de la enfermedad y buena para el FSR y FIR y muy buena para el FSEPR al año de tratamiento (AU)

Purpose To analyze the presence of subretinal fluid (SRF), intraretinal fluid (IRF) and subretinal pigment epithelial fluid (SRPEF) in näive patients with exudative neovascular AMD at baseline and at one year follow-up and treatment, in clinical practice, and perform a concordance analysis between resident physicians. Methods A retrospective analysis of the näive patients who attended our service for 6months between 2016-2017 by neovascular AMD was performed. Optical coherence tomography (OCT), at baseline and at one year follow-up, were analyzed from independently by two resident doctors, determined the presence or not of SRF, IRF, SRPEF. A retina specialist ophthalmologist intervened in cases where there was no consensus among resident physicians. A descriptive and interobserver concordance analysis was performed. Results 27 eyes of 24 patients were evaluated, 20.8% being men and 79.16% women, with a mean age of 78.57±8years. 32.14% of the eyes presented the three types of fluid before the start of treatment and the frequency of the different fluids at the beginning and at the end of the follow-up were respectively: SRF, 82.1% and 50%; IRF, 57.1% and 41.7%, and SRPEF, 67.9% and 79.2%). The Kappa analysis of interobserver concordance in the evaluation of the different fluids at the beginning and at the end of the follow-up were respectively: SRF, 0.88 and 0.67; IRF, 0.86 and 0.91, and SRPEF, 0.65 and 0.78. Conclusions The presence of SRF, IRF, RPEF in clinical practice, in the debut of neovascular AMD has a similar distribution to that presented in international clinical trials. The agreement between resident physicians is very good for SRF and IRF and good for SRPEF in the debut of the disease and good for SRF and IRF and very good for SRPEF at one year of treatment (AU)

Resident physician concordance in tomographic fluid detection in näive patients with neovascular age-related macular degeneration (AMD). / Estudio del fluido tomográfico y concordancia en su detección entre médicos residentes en pacientes näive con degeneración macular asociada a la edad (DMAE) neovascular.

PURPOSE: To analyze the presence of subretinal fluid (SRF), intraretinal fluid (IRF) and subretinal pigment epithelial fluid (SRPEF) in näive patients with exudative neovascular AMD at baseline and at one year follow-up and treatment, in clinical practice, and perform a concordance analysis between resident physicians. METHODS: A retrospective analysis of the näive patients who attended our service for 6months between 2016-2017 by neovascular AMD was performed. Optical coherence tomography (OCT), at baseline and at one year follow-up, were analyzed from independently by two resident doctors, determined the presence or not of SRF, IRF, SRPEF. A retina specialist ophthalmologist intervened in cases where there was no consensus among resident physicians. A descriptive and interobserver concordance analysis was performed. RESULTS: 27 eyes of 24 patients were evaluated, 20.8% being men and 79.16% women, with a mean age of 78.57±8years. 32.14% of the eyes presented the three types of fluid before the start of treatment and the frequency of the different fluids at the beginning and at the end of the follow-up were respectively: SRF, 82.1% and 50%; IRF, 57.1% and 41.7%, and SRPEF, 67.9% and 79.2%). The Kappa analysis of interobserver concordance in the evaluation of the different fluids at the beginning and at the end of the follow-up were respectively: SRF, 0.88 and 0.67; IRF, 0.86 and 0.91, and SRPEF, 0.65 and 0.78. CONCLUSIONS: The presence of SRF, IRF, RPEF in clinical practice, in the debut of neovascular AMD has a similar distribution to that presented in international clinical trials. The agreement between resident physicians is very good for SRF and IRF and good for SRPEF in the debut of the disease and good for SRF and IRF and very good for SRPEF at one year of treatment.