Subjective Refraction began a long time ago using trial frames with trial lenses. Manual and automated phoropters were then developed to speed up the process at the cost of less freedom for the patient and other disadvantages. VisionFit brings subjective refraction back to the trial frames modality and well combines the advantages of both methodologies (speed of operation and maximum freedom for the patient).
VisionFitTM is an innovative electronic, tunable, all-in one, solid state, mobile and wearable system of lenses. It performs a subjective sight examination and it effectively replaces both the trial glasses and the manual/electronic phoropter functionality.
By using the VisionFit in combination with Adaptica’s 2WIN binocular handheld refractometer and vision analyzer, the operator performs an objective and subjective refraction exam in a few minutes only, with maximum mobility and flexibility.
The system provides final guidance for the production of standard and customized prescription lenses and also allows subjective refraction to be performed in association with other biomedical devices (e.g. stabilometric platform) and with other devices used by the patient.
VisionFit features a self-calibration procedure to ensure accuracy and reliability. It does not require any special installation procedure.
VisionFit includes a computer integrated control unit featuring a display screen, keyboard controller, commands and connectivity capabilities. The wearable electronic trial frame features two tunable lens sets each composed of three adaptive lenses (spherical, cylindrical and aberration) with add-on lens support.
Wearing the VisionFit electronic trial frame as a traditional trial frame, the subject looks at the eye chart or any other near or far target in any environment, either sitting or standing, thus allowing subjective refraction to be performed with the subject in his/her usual working environment and posture.
Thanks to VisionFit lens technology, the subject can also move around with no operator intervention.
The electronic trial frame comes in two solutions:
The wearable trial frame; each tunable lens set includes a stack of 4 elements:
The adaptive lenses of the stack are electronically tuned by the Control Unit without any other operator action.
Aberration lens technology: liquid lens with 32 transparent actuators on a glass surface; this improves the performance of the optical system to correct aberrations.
The Control Unit is a tabletop driver featuring a computer-integrated unit, a display, keyboard controller commands and connectivity capabilities.
VisionFit features a self-calibration procedure to ensure accuracy and reliability.