Ophthalmic lens, method for designing the same, method for manufacturing the same, and ophthalmic lens set

A method for designing an ophthalmic lens comprising:

• an optical portion having:
• a near portion with a near dioptric power for viewing near distance;
• and
• a distance portion with a distance dioptric for viewing a distance further than the near distance;
• with the near portion or the distance portion being centrally disposed,
• wherein a portion that is not centrally disposed is annularly disposed at an outer edge of the near portion or the distance portion,
• and the near portion or the distance portion centrally disposed in the optical portion has a portion A in which power is intensified and then weakened when viewed in X direction from a center to a periphery, and has a portion A′ in which power is intensified and then weakened when viewed in X′ direction from the center to the periphery, which is an opposite direction to the X direction.

An ophthalmic lens set including a plurality of ophthalmic lenses each including:

• an optical portion having:
• a near portion with a near dioptric power for viewing near distance;
• and
• a distance portion with a distance dioptric for viewing a distance farther than the near distance;
• with the near portion or the distance portion being centrally disposed,
• wherein a portion that is not centrally disposed is annularly disposed at an outer edge of the near portion or the distance portion, and
• the near portion or the distance portion centrally disposed in the optical portion has a portion A in which power is intensified and then weakened when viewed in X direction from a center to a periphery, and having a portion A′ in which power is intensified and then weakened when viewed in X′ direction from the center to the periphery, which is an opposite direction to the X direction.