结构:由聚光电筒和放大镜组成。聚光电筒:即一般袖珍型笔式小电筒。放大镜:用4倍或8倍放大镜一个。自制放大镜架:两端为环形,一端环上留三个小爪,以固定放大镜。另一端套在电筒前部,两环间的金属片,弯成乙状形,调节放大镜焦点,恰好使光斑照在被检查眼部上。(如图) Structure: By the condenser torch and magnifying glass. Spotlight flashlight: that is, the general compact pen-type flashlight. Magnifier: Magnifier with 4 times or 8 times a. Self-made magnifying frame: both ends of the ring, leaving one end of the ring three small claws to fix the magnifying glass. The other end of the set in front of the flashlight, between the two rings of metal, curved into a B-shaped, adjusting the focus of the magnifying glass, just make the spot according to the eye to be checked. (Pictured)