A sixty-year-old female presented for a routine eye checkup. Her best corrected visual acuity was 6/6 in both eyes. Slit lamp examination after pupillary dilatation displayed vivid multi-coloured glistening opacities in the otherwise clear lens of her left eye (Fig. 1A). A magnified view using direct focal illumination revealed a spectacular array of polychromatic needle shaped crystals traversing all directions and cutting across the natural limits of the lens fibres, located in the deep cortex and anterior nucleus of the lens, giving the appearance of coloured lights decorating the branches as on a Christmas tree (Fig. 1B). The colours of the crystals varied according to the angle of the incident light. In retroillumination only a dim outline of the cataract was seen. The right eye examination was unremarkable. The patient had no other notable ocular or systemic abnormality. A diagnosis of uniocular ‘‘Christmas tree’’ cataract was made. In view of the excellent visual acuity, the patient was advised regular follow-up. Comment