An ophthalmologic apparatus configured to obtain an image of an eye to be examined, the ophthalmologic apparatus comprising: an aberration measuring means for measuring wavefront aberration of returning light reflected or scattered by the eye; a reflective optical modulation device for modulating at least one of a measurement light guided to the eye and the returning light; and a control means for controlling the reflective optical modulation device to correct the wavefront aberration of the returning light based on a measurement result of the aberration measuring means, wherein the reflective optical modulation device (159, 201) includes a reflection mirror having an effective diameter of 7.5 mm or less, and 61 or more actuators adapted to act on the reflection mirror within the effective diameter, each of the actuators having a maximum displacement of 7.5 μm or less, wherein each of the actuators of the reflective optical modulation device (159, 201) includes: a movable portion that is connected to the reflection mirror; a movable comb-shaped electrode supported by the movable portion and extending in a direction parallel to a reflection surface of the reflection mirror; a support portion that supports the movable portion; a fixed comb-shaped electrode supported by the support portion, extending in a direction parallel to the reflection surface of the reflection mirror, and disposed alternately with the movable comb-shaped electrode; and a voltage control means for applying a voltage between the movable comb-shaped electrode and the fixed comb-shaped electrode to displace the movable comb-shaped electrode and the movable portion in a direction normal to the reflection surface of the reflection mirror, and wherein the movable comb-shaped electrode and the fixed comb-shaped electrode do not overlap with each other partially along the direction normal to the reflection surface of the reflection mirror; characterized in that electrode fingers of the fixed comb-shaped electrode extend in the direction normal to the reflection surface; and electrode fingers of the movable comb-shaped electrode extend in the direction normal to the reflection surface. an aberration measuring means for measuring wavefront aberration of returning light reflected or scattered by the eye; a reflective optical modulation device for modulating at least one of a measurement light guided to the eye and the returning light; and a control means for controlling the reflective optical modulation device to correct the wavefront aberration of the returning light based on a measurement result of the aberration measuring means, wherein the reflective optical modulation device (159, 201) includes a reflection mirror having an effective diameter of 7.5 mm or less, and 61 or more actuators adapted to act on the reflection mirror within the effective diameter, each of the actuators having a maximum displacement of 7.5 μm or less, wherein each of the actuators of the reflective optical modulation device (159, 201) includes: a movable portion that is connected to the reflection mirror; a movable comb-shaped electrode supported by the movable portion and extending in a direction parallel to a reflection surface of the reflection mirror; a support portion that supports the movable portion; a fixed comb-shaped electrode supported by the support portion, extending in a direction parallel to the reflection surface of the reflection mirror, and disposed alternately with the movable comb-shaped electrode; and a voltage control means for applying a voltage between the movable comb-shaped electrode and the fixed comb-shaped electrode to displace the movable comb-shaped electrode and the movable portion in a direction normal to the reflection surface of the reflection mirror, and wherein the movable comb-shaped electrode and the fixed comb-shaped electrode do not overlap with each other partially along the direction normal to the reflection surface of the reflection mirror; characterized in that electrode fingers of the fixed comb-shaped electrode extend in the direction normal to the reflection surface; and electrode fingers of the movable comb-shaped electrode extend in the direction normal to the reflection surface. a movable portion that is connected to the reflection mirror; a movable comb-shaped electrode supported by the movable portion and extending in a direction parallel to a reflection surface of the reflection mirror; a support portion that supports the movable portion; a fixed comb-shaped electrode supported by the support portion, extending in a direction parallel to the reflection surface of the reflection mirror, and disposed alternately with the movable comb-shaped electrode; and a voltage control means for applying a voltage between the movable comb-shaped electrode and the fixed comb-shaped electrode to displace the movable comb-shaped electrode and the movable portion in a direction normal to the reflection surface of the reflection mirror, and wherein the movable comb-shaped electrode and the fixed comb-shaped electrode do not overlap with each other partially along the direction normal to the reflection surface of the reflection mirror; characterized in that electrode fingers of the fixed comb-shaped electrode extend in the direction normal to the reflection surface; and electrode fingers of the movable comb-shaped electrode extend in the direction normal to the reflection surface.