Bladder cancer patients with colour vision deficiency have lower survival rates than those without this visual impairment
People with colour vision deficiency and bladder cancer have lower survival rates than patients with the same cancer who have not been diagnosed with this visual condition, according to an analysis of medical records between 2004 and 2025 comparing a group of 135 people with both diagnoses and another group of 135 with bladder cancer without visual impairment. In a study published in Nature Health, the authors suggest that this difference could be due to these patients not detecting the presence of blood in their urine, which delays the seeking of medical care and cancer diagnosis.
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