Incidentes en oftalmología: estudio nacional en Argentina / Incidents in ophthalmology: A National Survey in Argentina

Resumen Objetivo: Realizar un análisis descriptivo de los incidentes en oftalmología reportados por médicos oftalmólogos de Argentina. Métodos: Se realizó un estudio basado en una encuesta desarrollada mediante un sistema electrónico, en agosto de 2021, dirigido a médicos oftalmólogos de Argentina. Se solicitó la descripción de incidentes oftalmológicos, clasificándolos en cuatro grupos, acorde a lo descrito por Organización Mundial de la Salud, en A: "Incidentes, casi-accidentes (no alcanzaron a los pacientes)"; B: "Incidentes (que alcanzaron al paciente, pero sin daño)"; C: "Incidentes prevenibles con daño" y D: "Incidentes no prevenibles con daño". El instructivo de la encuesta explicó la terminología y ofreció ejemplos de cada tipo de incidentes, que fueron evaluados mediante un proceso estadístico descriptivo. Resultados: Participaron 264 médicos oftalmólo gos quienes informaron 434 incidentes. A- Incidentes sin alcance al paciente: 125 casos (28.8%). B- Incidentes que alcanzaron al paciente sin daño: 117 casos. (27%). C- Incidentes prevenibles, con daño: 96 casos (22.1%). D- Incidentes no prevenibles con daño: 96 casos (22.1%). Los incidentes vinculados al uso de gotas fueron los más frecuentes en los 4 grupos (68, 75, 13 y 29 incidentes respectivamente). Conclusión: El 77.9% de los incidentes comunicados en este estudio se podrían haber evitado con adecuadas medidas de seguridad, siendo los más frecuentes los asociados a la utilización de gotas oftálmicas.

Abstract Objective: To perform a descriptive analysis of incidents in ophthalmology reported by ophthal mologists of Argentina. Methods: A questionnaire-based study was performed by an electronic survey during August 2021, including ophthalmologists of Argentina, requesting the description of ophthalmological incidents, which were classified in four groups, in accordance with World Health Organization Definition, as follow: A- "Inci dents, almost-accidents (patient no affected)"; B: "Incidents (patient affected without damage)"; C: "Preventable incidents, with damage", and D: "Not Preventable incidents, with damage". An instructive was supported in the survey explaining these definitions with examples of each kind of incidents. Data was processed for descriptive statistics. Results: The survey was performed by 264 ophthalmologists, reporting 434 incidents: A- Incidents, almost-accidents (patient not affected): 125 cases (28.8%). B- Incidents (patient affected without damage): 117 cases (27%). C- Preventable incidents, with damage: 96 cases (22.1%). D- "Not Preventable incidents, with damage: 96 cases (22.1%). In four groups the most frequent incidents were those associated with the use of ophthalmic drops (68, 75, 13, and 29 incidents respectively). Conclusion: Most of the incidents (77.9%) reported in this study could be avoided if appropriate safety measures were taken. Ophthalmic drops related incidents were the most frequent.

[Incidents in ophthalmology: A National Survey in Argentina]. / Incidentes en oftalmología: Estudio Nacional en Argentina.

OBJECTIVE: To perform a descriptive analysis of incidents in ophthalmology reported by ophthalmologists of Argentina. METHODS: A questionnaire-based study was performed by an electronic survey during August 2021, including ophthalmologists of Argentina, requesting the description of ophthalmological incidents, which were classified in four groups, in accordance with World Health Organization Definition, as follow: A- "Incidents, almost-accidents (patient no affected)"; B: "Incidents (patient affected without damage)"; C: "Preventable incidents, with damage", and D: "Not Preventable incidents, with damage". An instructive was supported in the survey explaining these definitions with examples of each kind of incidents. Data was processed for descriptive statistics. RESULTS: The survey was performed by 264 ophthalmologists, reporting 434 incidents: A- Incidents, almost-accidents (patient not affected): 125 cases (28.8%). B- Incidents (patient affected without damage): 117 cases (27%). C- Preventable incidents, with damage: 96 cases (22.1%). D- Not Preventable incidents, with damage: 96 cases (22.1%). In four groups the most frequent incidents were those associated with the use of ophthalmic drops (68, 75, 13, and 29 incidents respectively). CONCLUSION: Most of the incidents (77.9%) reported in this study could be avoided if appropriate safety measures were taken. Ophthalmic drops related incidents were the most frequent.

OBJETIVO: Realizar un análisis descriptivo de los incidentes en oftalmología reportados por médicos oftalmólogos de Argentina. Métodos: Se realizó un estudio basado en una encuesta desarrollada mediante un sistema electrónico, en agosto de 2021, dirigido a médicos oftalmólogos de Argentina. Se solicitó la descripción de incidentes oftalmológicos, clasificándolos en cuatro grupos, acorde a lo descrito por Organización Mundial de la Salud, en A: "Incidentes, casi-accidentes (no alcanzaron a los pacientes)"; B: "Incidentes (que alcanzaron al paciente, pero sin daño)"; C: "Incidentes prevenibles con daño" y D: "Incidentes no prevenibles con daño". El instructivo de la encuesta explicó la terminología y ofreció ejemplos de cada tipo de incidentes, que fueron evaluados mediante un proceso estadístico descriptivo. RESULTADOS: Participaron 264 médicos oftalmólogos quienes informaron 434 incidentes. A- Incidentes sin alcance al paciente: 125 casos (28.8%). B- Incidentes que alcanzaron al paciente sin daño: 117 casos. (27%). C- Incidentes prevenibles, con daño: 96 casos (22.1%). D- Incidentes no prevenibles con daño: 96 casos (22.1%). Los incidentes vinculados al uso de gotas fueron los más frecuentes en los 4 grupos (68, 75, 13 y 29 incidentes respectivamente). Conclusión: El 77.9% de los incidentes comunicados en este estudio se podrían haber evitado con adecuadas medidas de seguridad, siendo los más frecuentes los asociados a la utilización de gotas oftálmicas.

Disorganization of the inner retinal layers in diabetic macular edema: systematic review / Desorganização das camadas internas da retina sem edema macular diabético: uma revisão sistemática

ABSTRACT The objective of this article was to review the disorganization of inner retinal layers as a biomarker in diabetic macular edema. A systematic search was conducted in PubMed®/MEDLINE®, Cochrane and Embase until August 2021. The keywords used were: "disorganization of inner retinal layers (DRIL)", "diabetic macular edema (DME)" and "biomarkers". No restrictions were imposed on the types of study to be included. The studies selected for eligibility were those that included the diagnosis of diabetic macular edema (center involved, resolved), that were well documented with spectral domain optical coherence tomography, that included disorganization of inner retinal layers as one of the reported alterations, with a follow-up of at least 3 months, and those in which the best corrected visual acuity was evaluated pre and post. There were no limitations regarding the type of treatment established. References of identified studies were searched for additional relevant articles. Articles not published in peer review journals were excluded. All studies were evaluated by two investigators independently. When one of them was in doubt, it was assessed by a third evaluator. A total of seven studies were included. Four were retrospective, longitudinal cohort study and three cross-sectional observational. Regarding the population studied, 61.5% were men and 38.4% were women, most of them had diabetes mellitus type 2 (85.8%). Regarding the stage of diabetes, the percentage of patients with mild nonproliferative diabetic retinopathy was 28.2%, with moderate nonproliferative diabetic retinopathy was 28.5%, with severe nonproliferative diabetic retinopathy was 15.9% and with nonproliferative diabetic retinopathy was 27.4%. In 100% of the studies, the diagnosis of diabetic macular edema in the center involved was included by spectral domain optical coherence tomography (Heidelberg). In all the studies, the presence of disorganization of inner retinal layers was recorded and its association with best corrected visual acuity was evaluated. The measurement was carried out using the LogMAR scale. In all the studies, the presence or absence of disorganization of inner retinal layers was associated with the best corrected worse/better final visual acuity using p <0.05 as a statical significance. The disorganization of inner retinal layers as a biomarker and their presence have shown to be important predictors of visual acuity in the future in patients with diabetic macular edema. Histopathological studies are required to understand its mechanism of action.

RESUMO O objetivo deste artigo foi revisar sobre a desorganização das camadas internas da retina como biomarcador no edema macular diabético. Uma busca sistemática foi realizada no PubMed®/MEDLINE®, Cochrane e Embase até agosto de 2021. As palavras-chave utilizadas foram "disorganization of inner retinal layers (DRIL)", "diabetic macular edema (DME)" e "biomarkers". Não foram impostas restrições quanto aos tipos de estudo a serem incluídos. Os estudos selecionados para elegibilidade foram aqueles que incluíram o diagnóstico de edema macular diabético (centro envolvido, resolvido), que foram bem documentados com tomografia de coerência óptica de domínio espectral, que incluíram a desorganização das camadas internas da retina como uma das alterações relatadas, com acompanhamento de pelo menos 3 meses, e aqueles em que a melhor acuidade visual corrigida foi avaliada pré e pós. Não houve limitações quanto ao tipo de tratamento estabelecido. Referências de estudos identificados foram pesquisadas para artigos relevantes adicionais. Foram excluídos os artigos não publicados em revistas de revisão por pares. Todos os estudos foram avaliados por dois investigadores de forma independente. Quando havia dúvida com algum deles, a mesma era avaliada por um terceiro avaliador. Um total de sete estudos foram incluídos. Quatro eram estudos de coorte retrospectivos longitudinais e três eram observacionais transversais. Em relação à população estudada, a proporção de homens foi de 61,5% e de mulheres, 38,4%, a maioria com diabetes mellitus tipo 2 (85,8%). Em relação ao estágio do diabetes, o percentual de pacientes com retinopatia diabética não proliferativa leve foi de 28,2%, retinopatia diabética não proliferativa moderada foi de 28,5%, de retinopatia diabética não proliferativa grave foi de 15,9% e de retinopatia diabética não proliferativa foi de 27,4%. Em 100% dos estudos, o diagnóstico de edema macular diabético no centro envolvido foi incluído pela tomografia de coerência óptica de domínio espectral (Heidelberg). Em todos os estudos, foi registrada a presença de desorganização das camadas internas da retina e avaliada sua associação com a melhor acuidade visual corrigida. A medição foi realizada usando a escala LogMAR. Em todos os estudos, a presença ou ausência de desorganização das camadas internas da retina foi associada a pior/melhor acuidade visual final melhor corrigida usando p<0,05 como significância estática. A desorganização das camadas internas da retina como biomarcador e sua presença têm se mostrado importantes como preditor da acuidade visual no futuro em pacientes com edema macular diabético. Estudos histopatológicos são necessários para entender seu mecanismo de ação.

Presence of mitomycin-C in the anterior chamber after photorefractive keratectomy.

PURPOSE: To assess the presence of mitomycin-C (MMC) in hen aqueous humor after photorefractive keratectomy (PRK). SETTING: Instituto Universitario de Oftalmobiología Aplicada, Faculty of Medicine, University of Valladolid, and Department of Analytical Chemistry, Faculty of Sciences, University of Valladolid, Valladolid, Spain. METHODS: Mitomycin-C 0.02% was applied topically for 2 minutes to a right hen's eye after PRK (Group A) and to the left eye with intact epithelium (Group B). At different time points (10, 30, 60, 360, and 720 minutes), aqueous humor was extracted and high-performance liquid chromatography was performed to detect and quantify MMC levels. RESULTS: The mean maximum drug concentration of MMC measured in the aqueous humor was 187.250 microg/L +/- 4.349 (SD) in Group A and 93.000 +/- 4.899 microg/L in Group B, both detected 10 minutes after topical application. Statistically significant differences were found between Groups A and B at 10, 30, and 60 minutes, with decreasing MMC levels in both groups but a higher concentration in Group A. After 360 minutes, MMC levels were undetectable in Group B and after 720 minutes in Group A. CONCLUSIONS: Mitomycin-C was detectable in the aqueous humor of the hen eye after topical application in PRK-treated eyes and in eyes with intact epithelium. The presence of MMC is of concern as it may lead to ocular toxicity in the long term.

Experimental model of laser in situ keratomileusis in hens.

PURPOSE: To develop an experimental animal model of laser in situ keratomileusis (LASIK) in hens. METHODS: One hundred adult hens underwent a 60-microm corneal flap followed by -4 diopter excimer laser ablation. Surgical technique, clinical course, and pathology correlations are presented. RESULTS: Sixty percent of animals had a successful LASIK outcome according to clinical observations. Pathology showed the integrity of Bowman's layer and homogeneous flap in all eyes with good clinical outcomes. Flap complications such as buttonholes (5%), free-flaps (2%), and slipped flaps (3.4%) occurred with the surgical technique. Corneal abscess (2.9%) was also present. Loss of transparency was noted in 26.4%, which correlates with epithelial ingrowth detected by light histology study. CONCLUSIONS: An experimental animal model of LASIK was successfully developed in adult hens. This model could be useful in the study of wound healing and pharmacological modulation after LASIK in an animal with Bowman's layer.

Macular edema as the only ocular finding of tuberculosis.

PURPOSE: To describe an infrequent presentation of ocular tuberculosis. DESIGN: Retrospective observational case report. METHODS: A 61-year-old woman presented with decreased vision in her right eye and cystoid macular edema resistant to periocular corticosteroid treatment. There were no other findings. RESULTS: Diagnosis of probable underlying tuberculosis uveitis with macular edema as the only ocular manifestation was established based on a clinical history of possible tuberculosis during her infancy. Additionally, there were residual findings in the patient's chest x-ray, a positive Mantoux reaction, and Mycobacterium tuberculosis in sputum. Specific treatment was implemented for nine months. Cystoid macular edema resolved completely, visual acuity improved (20/20), and no remission occurred during two years of follow-up. CONCLUSIONS: In cases of idiopathic cystoid macular edema, tuberculosis should be considered as a potential cause. When treated, both are curable.