一名10岁女孩因每天拼豆三四小时，眼轴在3个月内增长了0.15毫米，增长速度为正常情况的两倍[1]。浙江省眼科医院杭州院区视光诊疗中心主治医师鲁伟聪指出，长时间盯着拼豆会使眼睛处于紧张状态，无法得到调节放松，从而加速远视储备消耗[1]。
医生强调，拼豆对身体的伤害不仅限于视力[1]。长期保持低头久坐姿态会使颈椎承压约为正常姿势的3倍[1]，同时可能对腰椎和呼吸道造成系统性损害[1]。此外，劣质拼豆加热时会释放甲醛等有毒物质[1]。
为保护健康，专家建议选用安全材质、在通风环境中操作，并严格控制每天拼豆时间不超过2小时[1]。同时推荐遵循"20-20-20"护眼法则：每隔20分钟，看向6米外的物体20秒[1]。
A 10-year-old girl's eye axis expanded by 0.15 millimeters over three months—double the normal growth rate—due to spending three to four hours daily on a bead-crafting hobby.[1] Dr. Lu Weicong, a supervising physician at the Optometry and Vision Therapy Center of Zhejiang Eye Hospital's Hangzhou branch, explained that prolonged near-focus on the craft keeps the eyes in constant tension without adequate relaxation, which accelerates the depletion of hyperopic reserve and worsens myopia progression.[1]
The risks extend beyond vision impairment.[1] When maintaining a hunched posture during extended bead crafting sessions, cervical vertebrae experience approximately three times the pressure compared to proper upright posture.[1] Additionally, low-quality beads can release formaldehyde and other toxic substances when heated, posing respiratory hazards.[1] Medical experts recommend the "20-20-20" eye care rule: every 20 minutes, look at an object 20 feet (6 meters) away for 20 seconds.[1] To minimize cumulative harm, daily bead crafting should ideally not exceed two hours, and activities should be conducted with safe materials in well-ventilated environments.[1]