power 4dOptical power is also referred to as dioptric power, convergence power, refractive power, or refractive power. It is equal to P = 1 f. Dioptre Formula . The Dioptre formula is used toThe power to be a 4th-dimensional entity. Variation of Dimensional Entity. Not to be confused with Temporal Entity. 4D Physiology Fourth Dimensional Physiology New God Physiology (Fourth