The blue special filter lenses F 451 and F 452 absorb selectively. They have been specially developed for patients with blue cone monochromatism. They display a transmission of less than 20% in the range of visible radiation from 550 nm to 650 nm.
The filter clip is glazed with Clarlet special filter lenses with plano power. They can be attached to practically any spectacle frame without difficulty.
The filter clip can be used as a supplement to existing Rx spectacles, are easy to handle and allow fast filter change if different filter colours are to be used. When not required, the clip can be folded upwards via a spring mechanism in its bridge support.
as per DIN EN ISO 8980-3
|Solar UV absorption
||Suitability for traffic and
driving at night and in twilight
as per DIN EN ISO 14889
|100% solar UV-B absorption
>95% solar UV-A absorption
|Not suitable for use in traffic!