NEW DEVICE AND METHOD FOR DETERMINING ABERRATIONS AND OPTICAL CHARACTERISTICS IN LENSES

he fundamental task of the optician-optometrist is to obtain a suitable optical prescription for each user. For this purpose, the most widespread devices currently used in optometric cabinets are lensmeters, which can be manual or automatic. In conventional manual lensmeters, it is the observer who manually acts on the adjustable dioptric power wheel. This procedure can present a number of problems as it is a completely manual process, such as possible confusion when annotating the orientation of the measured meridians, its high subjectivity and average time, as well as the dependence of the result on the observer's ametropia and, therefore, less precision. Automatic lensmeters are based on significantly more complex technologies, using wave sensors, aberrometers, etc., and consequently have a higher economic cost than manual versions, which are larger and less portable. Therefore, there is a need to develop new solutions for determining aberrations or measuring optical characteristics in optical and ophthalmic lenses that avoid the high influence of the professional handling the device, that are smaller than current options and that increase their accuracy without increasing their complexity and cost.