To provide a combined multifocus torus lens combining the compensation of astigmatism with the correcting mechanism of presbyopia due to the abnormality of a corner or a lens.
One surface of a lens is a tours surface for correcting astigmatism, the same surface or the other surface is a multifocus surface for correcting presbyopia and a clear image is given by correcting astigmatism and presbyopia. One surface of the lens is preferably a combined concentric circular multifocused torus surface 12 and the other surface is a spherical surface 14 or an aspherical surface 14. As for a form other than this, one surface of the lens is a tours surface for torus compensation and the other surface is a multifocus surface for correcting presbyopia. The multifocus surface is preferably a multifocus lens composed of concentric annular segments or a presbyopia lens having two and more spherical refraction powers or aspherical refraction powers (e.g. by an a spherical surface, a segment, a progressive aspherical surface, diffraction, birefringence of other concentric circle).
TEIMOSHII EI KURATSUTAABATSUKU
YUURIN ETSUKUSU RUISU
