The theory likely stems from the principles of acupuncture and acupressure, where specific points on the body are believed to be connected to different organs and systems. Some believe that piercing certain points on the ear could inadvertently affect eyesight. However, this is not supported by mainstream medical science.
In short: Ear piercing is not a recognized risk factor for vision problems.
If you're experiencing changes in your vision, it's essential to consult an ophthalmologist or other qualified healthcare professional for a proper diagnosis and treatment. Don't rely on unfounded beliefs about ear piercing affecting eyesight.