The plusoptix is a binocular hand-held photorefractor specially designed  for infants & children

The Plusoptix device measures both eyes simultaneously and provides reliable measurement values of refraction, pupil diameter, interpupillary distance and symmetry of corneal reflexes. With the binocular measurement  anisometropia and anisocoria can be detected immediately. Used in undilated pupils, measurements of hyperopia, myopia, astigmatism and anisometropia provide valuable data for a quick vision examination. Results can additionally be used as a starting point for retinoscopy or to confirm retinoscopic results.

If retinoscopy under cycloplegia is required, the process is faster because of the pre-existing measurement values, especially cylinder and axis. Furthermore you have a baseline to compare with.