Lupe device with polarization filter

The magnifying device (75) comprises a converging lens (62), at the patient side, a circularly polarizing (71) is arranged, which comprises a linear polarizing (63) and a λ / 4 retardation plate (64) which are arranged in succession, said linear polarizing ( 63) (between the condensing lens 62) and λ / 4 retardation plate (64) is arranged. The magnifying device (75) can be used together with a monocular or a binocular ophthalmoscope for indirect ophthalmoscopy ophthalmoscope or together with a slit lamp. A Zirkularpolfiltervorrichtung comprises the circularly polarizing (71) and fastening means (73, 74) which are for releasable attachment of the Zirkularpolfilters (71) at the patient side of a converging lens (62) configured and adapted.