Relaxed Vision Terminal (RVT)
Standard spectacle lenses perform best at their centre, but they tend to distort towards their edges. This can be seen when you look through the sides of your own lenses (away from the centre)
The challenge of lens designers is to improve lens performance over the largest possible area. As a result lenses are increasingly more sophisticated, becoming lighter, thinner and clearer.
Any spectacle lens, standard or sophisticated, that does not fit optimally may cause the wearer unnecessary discomfort, eye strain and headaches.
Modern lens designs require far more measurements to achieve higher levels of comfort and clarity. Accurate measurement is also critical for the angle and position of the frame on the face.
Leading German optical manufacturer Carl Zeiss has developed a highly advanced instrument, which measures these values with phenomenal accuracy. This unit is called a ‘Relaxed Vision Terminal’ (RVT). Spectrum Eyecare have recently invested in an RVT to offer our patients unrivalled accuracy & comfort from their new spectacles.
The RVT instrument measures to within one 10th mm. The effect of fine tuning these lens / frame parameters is to reduce and often eliminate much of the distortion spectacle lenses create. Visual comfort is improved and in turn you and your eyes feel less tired after a hard days work.
The Zeiss Relaxed Vision Terminal for spectacle wearers who demand the best that technology can offer in pursuit of visual comfort.
