A 70-year-old woman was referred because of vision deterioration of her right eye since several months. With optimal spheric correction of +2.50 in her right eye she had a vision of 0.7. The intraocular pressure was 10 mmHg. There were no abnormalities in the anterior chamber of the eye. The right eye did show a palette of coloured needle-shaped opacities in the cortex and anterior nucleus of the lens, consistent with unilateral Christmas tree cataract.