Does Bead Stringing Therapy Help Correct Astigmatism?

Can珠 training—often referred to in English as “bead stringing” or “bead threading”—is a visual-motor activity sometimes promoted in alternative or complementary vision therapy settings. However, there is no credible scientific evidence supporting its use for correcting or improving astigmatism.

Astigmatism is a refractive error caused by an irregular curvature of the cornea or lens, resulting in blurred or distorted vision at all distances. It is not related to eye muscle function, visual processing speed, or hand-eye coordination—factors that bead-stringing exercises may nominally target. Clinical guidelines from major ophthalmologic and optometric bodies—including the American Academy of Ophthalmology (AAO) and the American Optometric Association (AOA)—state unequivocally that refractive errors like astigmatism cannot be altered through behavioral or perceptual training.

Effective, evidence-based management of astigmatism includes corrective lenses (spectacles or toric contact lenses) and, for eligible adults, refractive surgery such as LASIK or SMILE. These interventions directly address the optical imperfection by compensating for or reshaping the corneal surface.

While bead-stringing activities may offer modest benefits for fine motor skill development or visual attention in certain pediatric or neurorehabilitation contexts, they should never be substituted for comprehensive eye examination and appropriate optical correction. Patients with uncorrected or undercorrected astigmatism—especially children—are at risk for amblyopia, visual fatigue, headaches, and academic difficulties.

Clinicians and patients alike should rely on peer-reviewed research and standardized clinical protocols—not anecdotal claims—to guide vision care decisions.