Patent ID: 7423807

Claim:
A microscope comprising: a main objective having an optical axis, the main objective being focused at an object plane corresponding to a front portion of a patient's eye during non-intraocular ophthalmic surgery; a supplementary optical system supplemental to the main objective for carrying out intraocular ophthalmic surgery, the supplementary optical system including an ophthalmoscopical lens located before the main objective externally from a housing of the microscope and a correction component located after the main objective internally within the housing of the microscope; wherein the externally located ophthalmoscopical lens and the internally located correction component are inserted together into the optical axis during intraocular ophthalmic surgery and removed together from the optical axis during non-intraocular ophthalmic surgery; wherein the ophthalmoscopical lens forms an intermediate image at a plane located between the ophthalmoscopical lens and the main objective, and the correction component reduces the focal length of the microscope to focus at the intermediate image plane without focus adjustment of the main objective, the correction component being independently movable along the optical axis relative to the main objective; and a magnification system after the ophthalmoscopical lens, the main objective and the correction component, the magnification system having an optical axis extending substantially perpendicularly to the optical axis of the main objective.