A convex lens of power +4 D is brought in contact with a

power 4dSYNCHRO Construction Solution - SYNCHRO 4D Power BI Data Connector - Prerequisites Setting up Global Environments SYNCHRO Control Permissions Using Connector TableOptical 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