专业连锁板块1月15日跌1.04%，博士眼镜领跌，主力资金净流出1.61亿元

Group 1 - The professional chain sector experienced a decline of 1.04% on January 15, with Doctor Glasses leading the drop [1] - The Shanghai Composite Index closed at 4112.6, down 0.33%, while the Shenzhen Component Index closed at 14306.73, up 0.41% [1] - Key stocks in the professional chain sector showed varied performance, with Jifeng Technology rising by 2.07% and Doctor Glasses falling by 3.68% [1] Group 2 - The net outflow of main funds in the professional chain sector was 161 million yuan, while retail investors saw a net inflow of 212 million yuan [1] - Detailed fund flow data indicates that Jifeng Technology had a main fund net inflow of 14.14 million yuan, while Doctor Glasses had a significant outflow of 13.57 million yuan [2] - Retail investors contributed positively to several stocks, with Doctor Glasses seeing a retail net inflow of 17.5 million yuan despite overall negative trends [2]