The utility model discloses a special dactylotheca formula components of a whole that can function independently eye speculum of infant, include that the first dactylotheca, the feeding that supply the thumb deepening to entangle indicate the second dactylotheca that deepening entangles, relative inboard is provided with out the eyelid hook respectively between first dactylotheca and the second dactylotheca, is provided with the barb that hooks the fissura palpebrae in the interior cambered surface of division eyelid hook, being fixed with the area of buckleing of taking the scale strip on the first dactylotheca, taking second dactylotheca department that the stiff end is relative to be equipped with the buckle with the knot, detain the area and be equipped with first rack, the buckle is equipped with the second rack with a toothed bar mesh, the free end of detaining the area inserts in the buckle. The utility model has the advantages that: this device simple structure, convenient to use, steerable fissura palpebrae size can not cause vice damage to infant's eyelid, travelling comfort when having improved it and using, and can not oppress eyeball and eyelid.