RESUMEN
PurposeThis study aims to evaluate the accuracy of lens prediction formulae on a paediatric population.MethodsA retrospective case-note review was undertaken of patients under 8 years old who underwent cataract surgery with primary lens implantation in a regional referral centre for paediatric ophthalmology, excluding those whose procedure was secondary to trauma. Biometric and refractive data were analysed for 43 eyes, including prediction errors (PE). Statistical measures used included mean absolute error (MAE), median absolute error (MedAE), Student's t-test and Lin's correlation coefficient.ResultsThe mean PE using the SRK-II formula was +0.96 D (range -2.47D to +2.41 D, SD 1.33 D, MAE 1.38 D, MedAE 1.55, n=15). The mean PE was smaller using SRK/T (-0.18 D, range -3.25 D to +3.95 D, SD 1.70 D, MAE 1.30 D, MedAE 1.24, n=27). We performed an analysis of the biometry data using four different formula (Hoffer Q, Holladay 1, SRK-II and SRK/T). Hoffer Q showed a smaller MedAE than other formulae but also a myopic bias.ConclusionOur clinical data suggest SRK/T was more accurate in predicting post-operative refraction in this cohort of paediatric patients undergoing cataract surgery. Hoffer Q may have improved accuracy further.
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Biometría/métodos , Extracción de Catarata , Implantación de Lentes Intraoculares , Lentes Intraoculares , Nomogramas , Óptica y Fotónica , Longitud Axial del Ojo/patología , Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Refracción Ocular/fisiología , Reproducibilidad de los Resultados , Estudios Retrospectivos , Agudeza Visual/fisiologíaRESUMEN
PurposeTo ascertain the risk of angle closure glaucoma associated with mydriasis in the Northern Ireland Diabetic Retinopathy Screening Programme.MethodsA retrospective case note review was carried out, cross referencing hospital records with those of the screening programme, to identify episodes of angle closure glaucoma, which occurred within 14 days of a retinopathy screening episode involving pharmacological mydriasis.ResultsThree cases of angle closure following mydriasis for screening were identified. The incidence of angle closure within the screening programme was calculated to be 1 in 31 755 patients dilated or 0.75 patients per year.ConclusionAngle closure is a rare complication of mydriasis used in photographic screening for diabetic retinopathy. We advocate the provision of clear instructions to patients in screening programmes on when and how to access emergency ophthalmic care following dilation to prevent loss of vision in this rare event.
Asunto(s)
Retinopatía Diabética/diagnóstico , Glaucoma de Ángulo Cerrado/inducido químicamente , Midriáticos/efectos adversos , Pupila/efectos de los fármacos , Tropicamida/efectos adversos , Retinopatía Diabética/epidemiología , Glaucoma de Ángulo Cerrado/diagnóstico , Glaucoma de Ángulo Cerrado/epidemiología , Humanos , Incidencia , Presión Intraocular/efectos de los fármacos , Tamizaje Masivo , Midriáticos/administración & dosificación , Irlanda del Norte/epidemiología , Soluciones Oftálmicas , Estudios Retrospectivos , Factores de Riesgo , Tropicamida/administración & dosificaciónRESUMEN
SUMMARY AND INTRODUCTION: To assess ophthalmic trainees' perspective of the impact of the European Working Time Regulations (EWTR) on their training. METHODS: All trainees in ophthalmology in the UK were emailed a link to an electronic survey asking about their experiences of the EWTR. RESULTS: 324 trainees (46% of those invited) responded to the survey. 44.4% of trainees reported that their posts were compliant with the EWTR. 40.7% felt that training had been adversely affected. 49.1% thought that ophthalmic trainees should opt out of the EWTR to work more than 48 h per week, with 57 the mean number of hours suggested appropriate. DISCUSSION: Many ophthalmic trainees in the United Kingdom are working in rotas which are not compliant with the European Working Time Directive. Many trainees feel that implementation of the EWTD has had a negative effect on training and feel it would be acceptable to work a higher number of hours per week.