瞳孔缩小是指瞳孔直径小于2mm。（)

A.2.5mm

B.2mm

C.4mm

D.3.5mm

E.3mm

A.直径为2-5mm

B.瞳孔缩小是指瞳孔直径小于3mm，瞳孔散大指瞳孔直径大于6mm

C.直径小于2mm称为针尖样瞳孔

D.单侧瞳孔缩小见于对侧小脑幕裂孔疝早期

E.单侧瞳孔扩大、固定、常提示对侧颅内血肿或脑肿瘤等颅内病变所致的小脑幕裂孔疝的发生

A.1mm

B.2mm

C.3mm

D.5mm

A.5mm

B.4mm

C.3mm

D.2mm

A.3mm；5mm

B.2mm；4mm

C.2mm；5mm

D.3mm；4mm

E.2mm；6mm

A.正常直径3-5mm

B.大于5mm时为散大

C.小于2mm为缩小

D.左右瞳孔直径相差小于0.5mm为不正常

A.4mm

B.3mm

C.2mm

D.1mm

A.2mm

B.2.5mm

C.3mm

D.1mm

E.4mm