PROBLEM TO BE SOLVED: To provide an ophthalmic system which calculates the accumulated light quantity on both coherent light and incoherent light to generally heighten safety on the eye of a subject. SOLUTION: This ophthalmologic unit has a light source 24 for measurement to irradiate coherent light to a subjects eye E, a light source 26 for tracking, a light source 13 for observation to irradiate noncoherent light to the subjects eye E, and a system control part 41 to control the whole movement. Irradiating times of the coherent light irradiating means and the incoherent light irradiating means are measured by the timer function equipped on the system control part 41 which calculates accumulated light quantity by the coherent light irradiating means and the incoherent light to the subjects eye.
