An observation device (100, 200, 300, 310, 400, 500) is provided with: a projection unit (10) equipped with a projection lens (12) and an objective lens (30, 31) for focusing light emitted from said projection unit via said projection lens onto the center of the radius of curvature of the cornea of an eye being tested. The projection lens is disposed so that light emitted from the projection unit is formed as an image on the retina of the eye being tested or near the corneal surface of the eye being tested.