Uni-ball Eye rollerball pen

The Uni-ball Eye (also known as the Vision in some regions) is a world-renowned rollerball pen known for its smooth ink flow and 'Uni-flow' system. It was developed by the Mitsubishi Pencil Company, which is headquartered in Tokyo, Japan.

Since its introduction in 1994, the Eye series has become a staple in office and stationary supplies globally. The brand is currently owned and managed by the Mitsubishi Pencil Co., Ltd., which operates independently and is distinct from the Mitsubishi Group conglomerate. Most Uni-ball writing instruments, including the Eye series, are primarily manufactured in Japan, maintaining a reputation for high-quality engineering and reliability.