power 4dThe 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 (FourthOptical 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 to