Sankan(LI3) for Blurry Vision

Sankan (LI3) again. 78 years old female patient was complaining about blurry vision of her left eye. After general treatments, I asked her to look at a picture on the wall with her sitting on the table. That was a picture of a flower and she said all the picture was blurry and she could see the leaf but couldn't see the stem. When I touch Left Sankan (LI3: located at the base of the index finger) with thicker part of a round-tip needle, she told me she could the picture clearly. She had been told by a doctor that she had cataract and needed a operation. I don't say the operation is not necessary, but it is interesting that just touching a specific acupuncture point changed the condition of the vision.