Non-mydriaticBNC¹⁴⁴⁶⁶⁴⁺³ 基本例句 免散瞳¹⁰⁰ A focusing method by adjusting two slit mark images was proposed to realize accurate focusing of a non-mydriatic fundus camera for an observed retina image in dark. 为实现免散瞳眼底相机在被观测眼底图像较暗情况下的精确调焦，提出了双光楔裂像调焦方法。 dictall