[Skiascopy. Some reflexions on the prescription of optical correction].

The skiascopy allows determination of the objective eye refraction, but this exam should not be interpreted mechanically. The eye is a living organ and several subjective factors should be considered, mainly the accommodation and oculomotor equilibrium. Based on her own experience, the author discusses the difficulties she had in prescribing optical corrections for 7 patients, after she had done the skiascopy. Transcription of data objectively acquired using skiascopy must consider also the psycho-physiological state of the subjective patient.