Which X-ray protective glasses model suits your prescription?
In our new tool, you can enter your prescription values and select suitable models for you!
The sphere (Sph) value is measured in Dioptre’s and is given a positive sign for the correction of farsightedness and a negative sign for the correction of nearsightedness. The value does not have to be the same for both eyes.
The cylinder (Cyl) in the lens corrects an irregular curvature of the cornea. Like the sphere, it is also expressed in Dioptre’s.
The axis (A) value is a positive number in degrees. This value indicates the position and direction of the curvature of the cornea. The axis value is mandatory if a cylinder value is entered.
The pupil distance (PD) is the distance from the centre of the pupil to the centre of the nose. This value is given in millimetres (mm). We strongly recommend that the PD values are measured by an optician or ophthalmologist, as optimal visual results cannot be guaranteed with the smallest deviations.
The sphere (Sph) value is measured in Dioptre’s and is given a positive sign for the correction of farsightedness and a negative sign for the correction of nearsightedness. The value does not have to be the same for both eyes.
The cylinder (Cyl) in the lens corrects an irregular curvature of the cornea. Like the sphere, it is also expressed in Dioptre’s.
The axis (A) value is a positive number in degrees. This value indicates the position and direction of the curvature of the cornea. The axis value is mandatory if a cylinder value is entered.
The pupil distance (PD) is the distance from the centre of the pupil to the centre of the nose. This value is given in millimetres (mm). We strongly recommend that the PD values are measured by an optician or ophthalmologist, as optimal visual results cannot be guaranteed with the smallest deviations.
The sphere (Sph) value is measured in Dioptre’s and is given a positive sign for the correction of farsightedness and a negative sign for the correction of nearsightedness. The value does not have to be the same for both eyes.
The cylinder (Cyl) in the lens corrects an irregular curvature of the cornea. Like the sphere, it is also expressed in Dioptre’s.
The axis (A) value is a positive number in degrees. This value indicates the position and direction of the curvature of the cornea. The axis value is mandatory if a cylinder value is entered.
The pupil distance (PD) is the distance from the centre of the pupil to the centre of the nose. This value is given in millimetres (mm). We strongly recommend that the PD values are measured by an optician or ophthalmologist, as optimal visual results cannot be guaranteed with the smallest deviations.
Addition (ADD) refers to the near addition in a multifocal lens and is a positive value in Dioptre’s. The addition is independent of the distance prescription. It indicates the difference between the near and far values.
The sphere (Sph) value is measured in Dioptre’s and is given a positive sign for the correction of farsightedness and a negative sign for the correction of nearsightedness. The value does not have to be the same for both eyes.
The cylinder (Cyl) in the lens corrects an irregular curvature of the cornea. Like the sphere, it is also expressed in Dioptre’s.
The axis (A) value is a positive number in degrees. This value indicates the position and direction of the curvature of the cornea. The axis value is mandatory if a cylinder value is entered.
The pupil distance (PD) is the distance from the centre of the pupil to the centre of the nose. This value is given in millimetres (mm). We strongly recommend that the PD values are measured by an optician or ophthalmologist, as optimal visual results cannot be guaranteed with the smallest deviations.
Addition (ADD) refers to the near addition in a multifocal lens and is a positive value in Dioptre’s. The addition is independent of the distance prescription. It indicates the difference between the near and far values.
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The human eye is incredibly sensitive towards ionizing radiation, and thus, should be protected with, for example, X-ray protective glasses. Particularly important is the correct fit of the glasses: The X-ray protective glasses must fit particularly tight to the cheeks and the sides of the user’s face. The reason for this is that the secondary radiation emitted from a lying patient does not only hit the front of the eye lenses but rather comes from below or from the sides at different angles.
The statutory annual dose limit value for eye lenses is 20 mSv (millisievert) for people older than 18 years who are occupationally exposed to radiation. The statutory annual dose limit value for eye lenses is 20 mSv (millisievert) for people older than 18 years who are occupationally exposed to radiation. With implementation of the European EURATOM Directive 2013/59 in national legislation from June 27, 2017 and a new radiation protection law (introduced December 2018) the annual value for the eye lens dose is limited for the first time at a mandatory threshold of max. 20 mSv per year (for people older than 18 years).