Frenzel glasses - wired
Easy to use to search for spontaneous or provoked nystagmus.
Fixed, biconvex lens + 18.0 diopter.
Nystagmus spectacles can only be connected with a transformer < 4.2 V in compliance with safety standards 93/42/EEC.
Handle and adaptor available separately (works with 3 x 1.5V CLR14 batteries - battery not supplied with handle)