请求眼镜屈光度数正负符号的换算 屈光度换算
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-6.75/-0.75×90°绛旓細-6.75/-0.75脳90掳
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绛旓細灞堝厜搴︿笌杩戣搴︾殑鍖哄埆锛鎹㈢畻鍏崇郴锛1.00D=100搴︼紙鏍囧噯鍐欐硶鏄1.00D灏忔暟鐐瑰悗2浣嶅皬鏁帮級濡傛灉鏄繎瑙嗙溂閭ｄ箞锛300搴﹀眻鍏夊害鏄-3.00D400搴﹀眻鍏夊害鏄-4.00D300~400涔嬮棿鐨搴︽暟灞堝厜搴涓-3.00D~-4.00D鏄溂绉戝尰鐢熻繖涓瓟妗堢粷瀵规爣鍑嗙濂借繍銆傛敞锛氬鏋滄槸杩滆鐪兼妸-鏀规垚+鍗冲彲銆傝繎瑙嗗眻鍏夊害鏄眻鍏夊姏鐨勫ぇ灏忓崟浣嶏紝浠...
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绛旓細闅愬舰鐪奸暅鐨搴︽暟鏈変竴涓鎹㈢畻鍏紡锛岄殣褰㈢溂闀灞堝厜搴锛濇鏋剁溂闀滃眻鍏夊害梅锛1锛0.012脳妗嗘灦鐪奸暅灞堝厜搴︼級锛1涓眻鍏夊害鐩稿綋浜庡钩鏃舵墍璇寸殑100搴︼紝杩戣鐨勫眻鍏夊害鏄璐熸暟锛岃繙瑙嗙殑灞堝厜搴︽槸姝ｆ暟銆0.012鏄鏋剁溂闀滃拰榛鐪肩悆鏈楂樼偣鐨勮窛绂伙紝鍗曚綅鏄背銆 妗嗘灦闀滀笌闅愬舰鐪奸暅搴︽暟鏈変竴鎹㈢畻鍏紡锛 Fo=Fs/(1-dFs) Fo鈥旈殣褰...
绛旓細鏌愰忛暅灞堝厜搴澶у皬绛変簬璇ラ忛暅鐒﹁窛鐨勫掓暟锛屽嵆 D=1/f 锛屽叾涓劍璺 f 鍗曚綅涓虹背锛岃嫢鐒﹁窛 f ' =lm 鏃讹紝鍒 D=1 灞堝厜搴︼紱 f=2m 鏃讹紝 D=0.55 灞堝厜搴 ( 涔熷父鐢 m-1 琛ㄧず銆傚嚫閫忛暅鐨勫眻鍏夊姏浠モ + 鈥濆彿琛ㄧず锛屽嚬閫忛暅鐨勫眻鍏夊姏浠モ溾斺濊〃绀恒 1 灞堝厜搴︽垨 1D 绛変簬甯歌鐨 100 搴︺ 鐪肩潧鎶樺皠鍏夌嚎...
