Extra-thin lenses (High Index Lenses)Extra-thin lenses are available form the world's leading high-index lens manufacturer: Seiko, Japan. These lenses are thinner than normal lenses of the same power and are more cosmetically acceptable. This is a huge advantage for persons who have a lens power of -4 or above. The lightweight and thin design of the lens makes it all the more beautiful and trendy. High Index lenses are available in 1.56, 1.6, 1.67 and 1.74 varieties.
