An ophthalmic apparatus for computing a sensitivity value of an eye to be examined in a measurement point, the apparatus comprising a lamp and a central processing unit, and being configured for emitting a stimulus light from the lamp having one, two or more different kinds of strength onto the retina of said eye to be examined from a predetermined said measurement point as a stimulus under a predetermined background light, and obtaining a response of an examinee to said stimulus light, wherein the central processing unit is configured for gradually changing the brightness of the lamp in said one or more different kinds of strength under said predetermined background light, and for measuring a virtual sensitivity value of the eye to be examined so as to correspond to the brightness of the lamp on the basis of a response from the examinee, wherein the apparatus further comprises: a pupil diameter measuring unit for measuring a pupil diameter of said eye to be examined; a shape parameter rate computing unit for computing, as a shape parameter rate (n), the rate of a length between the measured pupil diameter and a standard pupil diameter, or the area proportion (n) of the pupil area of the eye to be examined and a standard pupil area of said standard pupil diameter; a memory storing a correction database of a volume of correction (y) as a function of the shape parameter rate (n) for correcting the virtual sensitivity value which was measured with said pupil diameter in some shape parameter rate (n) into a sensitivity value in a standard pupil diameter, wherein virtual sensitivities of many examinees with known sensitivity values in said standard pupil diameter had been measured in advance under said predetermined background light while variously changing the pupil diameter; said memory further storing, as a sensitivity database, a normal sensitivity distribution of normal sensitivity values in the standard pupil diameter by age for each measurement point and in steps of sensitivity bounds statistically computed from a perimetry database of normal healthy eyes; a correction volume computing unit for computing a volume of correction (y) by referring to said correction database from said shape parameter rate (n) of said eye to be examined; and a sensitivity step judging unit configured for correcting said measured virtual sensitivity value into said sensitivity value in said standard pupil diameter by said computed volume of correction (y), and for judging a sensitivity step by referring said corrected sensitivity value to said sensitivity database. emitting a stimulus light from the lamp having one, two or more different kinds of strength onto the retina of said eye to be examined from a predetermined said measurement point as a stimulus under a predetermined background light, and obtaining a response of an examinee to said stimulus light, a pupil diameter measuring unit for measuring a pupil diameter of said eye to be examined; a shape parameter rate computing unit for computing, as a shape parameter rate (n), the rate of a length between the measured pupil diameter and a standard pupil diameter, or the area proportion (n) of the pupil area of the eye to be examined and a standard pupil area of said standard pupil diameter; a memory storing a correction database of a volume of correction (y) as a function of the shape parameter rate (n) for correcting the virtual sensitivity value which was measured with said pupil diameter in some shape parameter rate (n) into a sensitivity value in a standard pupil diameter, wherein virtual sensitivities of many examinees with known sensitivity values in said standard pupil diameter had been measured in advance under said predetermined background light while variously changing the pupil diameter; said memory further storing, as a sensitivity database, a normal sensitivity distribution of normal sensitivity values in the standard pupil diameter by age for each measurement point and in steps of sensitivity bounds statistically computed from a perimetry database of normal healthy eyes; a correction volume computing unit for computing a volume of correction (y) by referring to said correction database from said shape parameter rate (n) of said eye to be examined; and a sensitivity step judging unit configured for correcting said measured virtual sensitivity value into said sensitivity value in said standard pupil diameter by said computed volume of correction (y), and for judging a sensitivity step by referring said corrected sensitivity value to said sensitivity database. correcting said measured virtual sensitivity value into said sensitivity value in said standard pupil diameter by said computed volume of correction (y), and for judging a sensitivity step by referring said corrected sensitivity value to said sensitivity database.