periods of time.Product PropertiesMagnifying rulers only magnify in one direction, the height of the letters is therefore increased but the width remains the same.PXM® lightweight lens for a distortion-free

periods of time.Product PropertiesMagnifying rulers only magnify in one direction, the height of the letters is therefore increased but the width remains the same.PXM® lightweight lens for a distortion-free

periods of time.Product PropertiesMagnifying rulers only magnify in one direction, the height of the letters is therefore increased but the width remains the same.PXM® lightweight lens for a distortion-free

symbols are used by ophthalmologists and opticians. In addition to Landolt rings, Snellen charts, letters and numbers, symbols can also be used which are displayed at a specified distance via charts or test

visual angle of around 5 degrees in total. A reading angle is necessary as our eyes do not read letter by letter, but through the recognition of whole syllables. What are the special benefits of cera-tec®