What term describes the condition in which both eyes have equal refractive power?

The term that accurately describes the condition in which both eyes have equal refractive power is "Homometropia." This indicates that both eyes have the same refractive error and contribute equally to vision.

In contrast, "Insometropia" typically refers to a condition where one eye is emmetropic (normal vision) and the other is not, which does not match the description of equal refractive power. "Anisometropia" identifies a situation where the eyes have unequal refractive power, leading to differing vision quality between the two. Meanwhile, "Ammetropia" is a more general term that encompasses any refractive error that deviates from emmetropia, which means that it is also not a correct choice for describing equal refractive power.

Thus, the correct term is "Homometropia," as it specifically indicates that both eyes have the same refractive characteristics.