RESUMEN
Five devices were tested for the amount of optical radiation they emitted. Recommended values can be exceeded with a workload of 17 to 81 applications in any 167-minute period. Some procedures, such as close viewing distances, direct view applications, and treating the anterior teeth may increase the exposure to the user.
Asunto(s)
Instrumentos Dentales/normas , Ojo/efectos de la radiación , Luz/efectos adversos , Resinas Sintéticas , Resinas Compuestas , Estudios de Evaluación como Asunto , Dispositivos de Protección de los Ojos , Humanos , Polímeros , Factores de Tiempo , Rayos Ultravioleta/efectos adversosAsunto(s)
Radiología/métodos , Estudios de Evaluación como Asunto , Humanos , Matemática , Difracción de Rayos X , Rayos XRESUMEN
The spectral irradiance was measured from twenty handheld ophthalmoscopes. The optical radiation emitted from each ophthalmoscope was compared to the threshold limit values (TLV(s)) for acute effects published by the American Conference of Governmental Industrial Hygienists. All ophthalmoscopes tested were found to emit unnecessary ultraviolet and infrared radiation in addition to visible light. The levels of optical radiation emitted from most of the ophthalmoscopes were below the applicable TLV(s). Nevertheless, suitable blocking filters can reduce the emission of ultraviolet and infrared radiation. Use of the ophthalmoscopes at the lowest possible power would further minimize patient exposure.