Bar chart showing reported symptoms of retinoblastoma in 39 UK children diagnosed during 2025. White eye not visible in a photo was the most common symptom at 64%, followed by squint at 28%, white eye visible in a photo at 21%, other symptoms and roaming eye/eyes not focusing both at 15%, redness or swelling at 8%, loss of vision at 3%, and absence of red eye and change in iris colour both at 0%. Source: Childhood Eye Cancer Trust, www.chect.org.uk