The dose to the eye lens of the main opeartor is 5 times lower to the dose recorded outside the eye lens glasses, which is the usual way to record doses using the specific adapted eye lens  dosemeters (4).

Moreover, a great help to the radiation protection officer is the ratio of the eye lens doses to the respective KAP values in order to make a very first rough estimation of the eye lens doses for the occupationally exposed personnel. The relationship between the KAP values and the respective occupational eye lens dose is difficult to be established,  since staff doses are associated with a variety of parameters such as the projections of the tube, the beam collimation, the working practices and the most important of all, the use of protective devices (5). However, a good starting point for the first estimation of the eye lens dose is the use of the KAP values.