Many species of millipedes, including the entire order Polydesmida and cave-dwelling millipedes such as Causeyella and Trichopetalum, had ancestors that could see but have subsequently lost their eyes and are blind.
Moitas especies de milpés, incluíndo a orde completa dos Polydesmida e milpés moradores de covas como Causeyella e Trichopetalum, terían antepasados que poderían ver pero que perderon despois os ollos e convertéronse en cegos.