FOCUSING POWER By N., Pam M.S. - May 11, 2013 the name for the degree to which a converging lens will cause parallel light rays to be refracted. A high degree causes a focal point close to the lens, low degree is further away. FOCUSING POWER: "The focusing power of a lens is measured in diopters." Related Psychology Terms SPHERICAL ABERRATION ASTIGMATISM FOCUSING MECHANISM FOCAL LENGTH ERROR OF REFRACTION SPECTRAL COLOR OBJECTIVE OPHTHALMOSCOPE MADDOX ROD TEST OPTICAL DEFECT Cite this page: N., Pam M.S., "FOCUSING POWER," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/focusing-power/ (accessed February 23, 2020).