[Filtering lenses in retinopathy].

Many patients with retinopathies and tapetoretinal hereditary degenerations complain about symptoms varying from blinding to intense photophobia or from diminished contrast sensitivity to blurred vision or lowered visual acuity. Protecting optic filters, blocking the blue spectrum of light, may reduce these symptoms. There is no evidence at this time that such filtering glasses would delay or slow down the evolution of the disease.