Previous research has revealed that one of the causes of eye strain from working on a PC or using a smartphone is fatigue of a muscle called the "accommodative muscle." The "accommodative muscle" is a muscle that changes the thickness of the crystalline lens, which acts like a camera lens, to sharply focus on the retina.

It was known even before the development of EyeStretch that the ingredient "neostigmine methylsulfate" is effective in relieving stiffness in the "focusing muscles," and our company had already commercialized eye drops containing this ingredient to combat eye strain.

However, the surface of the eye is covered by the cornea, and the focusing muscles are located deep within this cornea. The cornea, which is exposed to the outside world, has a strong barrier function that protects the eye from the entry of foreign objects. However, this barrier function of the cornea has hindered conventional formulations from efficiently delivering muscle-relaxing ingredients to the focusing muscles.

We focused on the idea of "delivering even more active ingredients to the focusing muscles, just like applying a pain relief patch to stiff shoulders," and after nearly two years of research, we arrived at a formulation design that efficiently delivers the ingredients through the cornea.

We've incorporated various features, including a refreshing feel, to help relieve eye strain as quickly as possible.

For eye strain and blurred vision, try "Rohto Eye Stretch." Thank you for your consideration.