Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) optic atrophy type 1 ?
    ### Response:
    Optic atrophy type 1 is a condition that affects vision. Individuals with this condition have progressive vision loss that typically begins within the first decade of life. The severity of the vision loss varies widely among affected people, even among members of the same family.
    