Safety glasses
A safety glasses is launched in 2008 special form of prism glasses , which in sport climbing is used. It enables the belaying person to watch their partner while climbing without having to overextend the cervical spine . As early as 2003, the use of a headrest to relieve the cervical spine was discussed with a view to preventing pain in climbers.
principle
The safety glasses work with reflective prisms , as do the sun glasses and the inverted glasses . While the latter turns the image upside down, the beam path of the safety glasses and the reclining glasses is deflected upwards or downwards by 60 °, without rotation or mirror image. There is also a Bauernfeind prism in front of each eye .
application
With the glasses, the belayer's gaze is diverted upwards so that he can look up without putting his head back. This can prevent hyperlordization of the cervical spine (Cervical spine) and thus neck pain.
The upward restriction of the field of view by the predetermined size of the prisms may be disadvantageous. This effect requires an initial period of getting used to.
The safety goggles were primarily developed to relieve the belayer when securing the rope partner for a long time. Due to the increasing steepness and length of the routes in today's climbing halls, safety goggles were primarily used for indoor climbing , but they are now also increasingly used for sport climbing on rock. The first safety glasses were developed by the German sport climber Albi Schneider in 2007 and presented with an outdoor award at the ISPO 2008 .
Web links
- Safety glasses for climbers. A kink in the look instead of the neck. (PDF; 5.2 MB) DAV Panorama magazine 2/2008, p. 28
Individual evidence
- ↑ R. Kittel, F. Bittmann, G. Badtke, W. Bernstädt: Sport- specific loads on the cervical spine in climbers. In: German magazine for sports medicine year . tape 54 , no. 5 , 2003, p. 142 ff . ( zeitschrift-sportmedizin.de [PDF; 1.9 MB ]).
- ↑ http://www.rehadat-hilfsmittel.de/de/kommunikation-information/sehhilfe/liegebrillen/index.html
- ↑ Safety glasses for climbers. A kink in the look instead of the neck. DAV Panorama magazine 2/2008, p. 28 (PDF; 5.2 MB)
- ^ "Climbing" magazine online on February 5, 2008: Ispo Award for CU safety glasses. (No longer available online.) Archived from the original on October 31, 2012 ; Retrieved November 6, 2012 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ "Outdoor" magazine online on January 31, 2008: Prisma glasses for climbers. Retrieved November 6, 2012 .
