PROBLEM TO BE SOLVED: To provide an ophthalmic apparatus capable of reliably protecting an eye to be inspected from an optical hazard and a method of operating the ophthalmic apparatus. An irradiation system that irradiates an eye to be inspected with light emitted from a light source, and a driving condition acquisition unit that acquires driving conditions of a light source related to the intensity of light emitted from the light source, and the driving conditions are changed. If possible, a drive condition acquisition unit that acquires the drive condition at least every time the drive condition is changed, an irradiation time measurement unit that continuously measures the integrated irradiation time of light to the eye to be inspected, and a drive condition acquisition unit. It is provided with an irradiation light amount estimation unit that continuously estimates the irradiation light amount of the light irradiated to the eye to be inspected based on the acquisition result of the above and the measurement result of the irradiation time measurement unit. [Selection diagram] Fig. 3【課題】被検眼を光ハザードから確実に保護することができる眼科装置及びその作動方法を提供する。【解決手段】光源から出射された光を被検眼へ照射する照射系と、光源から出射される光の強度に係る光源の駆動条件を取得する駆動条件取得部であって、且つ駆動条件が変更可能である場合には少なくとも駆動条件が変更されるごとに駆動条件を取得する駆動条件取得部と、被検眼に対する光の積算照射時間を継続的に測定する照射時間測定部と、駆動条件取得部の取得結果と照射時間測定部の測定結果とに基づき、被検眼に照射される光の照射光量を継続的に推定する照射光量推定部と、を備える。【選択図】図３
