Summary of Eye Symptom Improvement Agent and Method for Improving Eye Symptoms

(Patent No. 7007770)”

In this invention, it is possible to improve symptoms related to eye fatigue or blurred vision, as well as myopia, astigmatism, or presbyopia. Among these, it is preferable to be able to improve myopia, astigmatism, or presbyopia, with an even stronger preference for the improvement of myopia or presbyopia.

In the context of this invention, the scope of “improvement” includes not only treatment to cure the condition but also temporary treatment or recovery of the condition, stopping the progression of the condition, or delaying it compared to not receiving treatment. Therefore, “improvement of eye symptoms” in this invention encompasses not only the restoration of visual acuity but also the temporary correction of visual acuity, the recovery of visual acuity, visual field, and focusing function temporarily worsened due to eye fatigue or blurred vision, and even temporary improvement in astigmatism degree. For example, if eye symptoms (especially visual acuity or astigmatism degree) temporarily improve from the period of administration or after the administration of the eye symptom improvement agent for a certain duration, and then the eye symptoms return to their original state, it is also considered as part of “improvement of eye symptoms.