Method for determining a single vision ophthalmic lens

A method implemented by computer for determining a single vision ophthalmic lens, the single vision ophthalmic lens being adapted to a wearer, the method comprising:

• a wearer prescription data providing step of providing wearer prescription data indicative at least of a prescribed optical power of the wearer;
• a wearing data providing step of providing wearing data indicative of a wearing parameters of the single vision ophthalmic lens by the wearer;
• and
• a single vision ophthalmic lens determining step of determining the single vision ophthalmic lens so that in wearing conditions corresponding to the wearing parameters, the single vision ophthalmic lens provides to the wearer the prescribed optical power in at least a first gazing direction when gazing at a first distance and a second gazing direction when gazing at a second distance,
• wherein the first and second distances are different and the first and second gazing directions are different, and
• wherein the single vision ophthalmic lens is configured so that for any gazing direction comprised in an elliptical cone of half major axis at 8 deg and half minor axis at 4 deg, an orientation of the major axis being horizontal in standard wearing conditions, the elliptical cone being centered at the second gazing direction, an optical power difference measured at said any gazing direction and an optical power prescription is smaller than or equal to 0.15 D.