Abstract: An ophthalmic instrument for use with a subject's eye, comprising an interferometer having a test arm in which the subject's eye is to be positioned and a reference arm, the reference arm including a mirror adapted to be positioned such that the reference arm has a predetermined length, and an ophthalmic apparatus coupled to the interferometer such that, by altering a test arm length, a length between the ophthalmic apparatus and the eye is also altered. The mirror is positioned to achieve the predetermined length and a length of the test arm is adjusted such that interference between the light reflected from the eye and the light reflected from the mirror is achieved, the ophthalmic apparatus is optically aligned with the eye.

Abstract: A system and method for reshaping the cornea of an eye with a laser that also incorporates a subsequent compensation for residual vision aberrations. A diagnostic unit obtains a pre-op prescription for the eye and predicts an induced refractive shift resulting from laser treatment. Based on this data, a preview lens is selected or manufactured to evaluate the tolerance of a patient to a predicted post-op vision. Then, a laser unit is used to alter the cornea of the eye (i.e. laser treatment) to increase the depth-of-field of the eye. Subsequently, after the laser treatment has been completed, conventional vision correction is provided by spectacles, intraocular lenses or contact lenses. This conventional correction will then compensate for any remaining pre-op aberrations, as well as any residual aberrations in the patient's post-op vision that may have been induced during the laser treatment.

Abstract: An ophthalmic instrument for use with a subject's eye, comprising an interferometer having a test arm in which the subject's eye is to be positioned and a reference arm, the reference arm including a mirror adapted to be positioned such that the reference arm has a predetermined length, and an ophthalmic apparatus coupled to the interferometer such that, by altering a test arm length, a length between the ophthalmic apparatus and the eye is also altered. The mirror is positioned to achieve the predetermined length and a length of the test arm is adjusted such that interference between the light reflected from the eye and the light reflected from the mirror is achieved, the ophthalmic apparatus is optically aligned with the eye.

Abstract: The invention is directed to a system and methods for automatically determining a multiple number of viable treatment plans for correcting a patient's vision via photoablative refractive surgery. Embodiments of the invention rely on selected various diagnostic input about the patient's eye to classify the eye as being particularly suitable for treatment by several different treatment algorithms. The invention is further directed to the simultaneous presentation of various treatment plans based upon selected input data and available treatment algorithms that can be reviewed, modified, and ultimately selected for application.