Why is SEIKO the global leader in lens production? SEIKO adheres to the highest optical quality standards and manufactures the most technologically advanced lens materials. The lenses are extremely light and thin, specially designed to suit all lifestyle choices. In Japanese, ‘SEIKO’ stands for precision and true to its name, SEIKO has delivered every time over the course of 40 years! We, at i2i Optical, are making sure you get to experience the superior SEIKO lenses that can greatly enhance your vision and enrich your life.