For most people with normal vision, standard sunglasses are sufficient to protect them from strong reflection light. A healthy eye is adaptable enough for such situations. However, people with special visual impairments often need additional support to protect their eyes from intense light. With aging, as with some other conditions, the eyes become very sensitive to what we normally see as moderate reflection, while various eye conditions increase the possibility of blinding reflection caused by violet and blue light rays scattered in the eye itself. Kanten Filter filters are special treatments that filter and block harmful rays from the light spectrum, primarily the blue and violet parts of the light spectrum.
The eyes, and thus the sensitive retina, are protected from high-energy, short-wavelength blue light. In this way, reflection is reduced and contrast is significantly increased. Commercial safety glasses reduce visible light relatively evenly across the spectrum. With the Kanten Filter, part of the light is cut off at a precise point (eg 540 nm = edge) and the short-wavelength light below this point is absorbed by the Kanten Filter.
Indications for which the Kanten Filter can be useful:
– increased sensitivity to reflection,
– for eye diseases, such as macular degeneration, diabetic retinopathy, glaucoma, retinitis pigmentosa, albinism,
achromatopsia, aphakia,
– after cataract surgery,
– with increased sensitivity to reflection and reduced contrast vision,
– pronounced sensitivity to light (for migraines, headaches).
Winter Sun
Block 450nm
87% Transmission
— Night blindness
— Macular degeneration
— Retinitis Pigmentosa
— Preoperative period of cataract
— Forensic experts
— Seasonal affective disorder
Orange
Block 500nm
68% Transmission
— Macular degeneration
— Retinitis Pigmentosa
— Cataract postoperative period
— Aphakia/Pseudophakia
— Forensic experts
— Dentists
Brown
Block 540nm
38% Transmission
— Macular degeneration
— Cataract postoperative period
— RK-PRK
— Primarily for external use
Chocolate Brown
Block 480nm
28% Transmission
— Macular degeneration
— Retinitis Pigmentosa
— Preoperative period of cataract
— Forensic experts
Intense Red
Block 550nm
56% Transmission
— Achromatopsia
— Retinitis Pigmentosa
— Albinism
— Cataract postoperative period
— Forensic experts
Ryby Red
Block 600nm
37% Transmission
— Achromatopsia
— Color blindness
— Dark room filter
— Nyctalopia
Indian RED
Block 550nm
50% Transmission
— Asthenopia (tension)
— Headache
— Migraine
Marine Blue
Block 600nm
16% Transmission
— Photosensitive epilepsy
