Abstract: An ophthalmic laser irradiation apparatus for irradiating a laser beam onto a patient's eye capable of preventing a deviation of an irradiation position of the laser beam due to a change in a pupil (iris), and performing laser irradiation within high precision. The apparatus has an irradiation optical system for irradiating the laser beam onto the eye, an illumination unit, including an illumination light source, in which light intensity of visible illumination light onto the eye is adjustable, a detection unit which detects at least one of a pupil area and a pupil diameter of the eye, a setting unit which sets a reference value of at least one of the pupil area and the pupil diameter, and an informing unit which informs at least one of a detection value of the detection unit along with the set reference value and a comparison result thereof.

Abstract: A corneal surgery apparatus capable of accurately obtaining torsion information on an eyeball or positional information on an eye even during laser irradiation or after a cornea is incised into a layer, and of accurately performing corneal surgery with a laser beam. The apparatus, for ablating a cornea of a patient's eye by irradiation of a laser beam, includes an irradiation optical system for irradiating the laser beam onto the cornea, an image-pickup device for picking up an image of an anterior-segment of the eye, a mark detection device for processing the obtained image of the anterior-segment and detecting a mark provided to the eye, a reference position setting device for setting a reference position in which the mark being detected is to be positioned, and a torsion detection device for obtaining torsion information on the eye based on the detected mark and the set reference position.

Abstract: A corneal surgery apparatus for correcting a refractive error by ablating corneal tissue with a laser beam, being capable of finding a correction pattern optimum for a patient to ensure precise correction, and a method of determining correction data. The apparatus includes units for inputting refractive power data on a trial contact lens, converting the refractive power data to obtain ablation data, controlling an ablation amount of the corneal tissue based on the ablation data, storing the refractive power data corresponding to each contact lens, and revising the refractive power data. The method includes processes for obtaining a correction value made with a contact lens based on of an ophthalmic examination, selecting a contact lens based on the value and converting the refractive power data on the selected contact lens into the ablation data for correcting the refractive error if the trial use of the contact lens results favorably.

Abstract: An ophthalmic laser irradiation apparatus for irradiating a laser beam onto a patient's eye capable of preventing a deviation of an irradiation position of the laser beam due to a change in a pupil (iris), and performing laser irradiation within high precision. The apparatus has an irradiation optical system for irradiating the laser beam onto the eye, an illumination unit, including an illumination light source, in which light intensity of visible illumination light onto the eye is adjustable, a detection unit which detects at least one of a pupil area and a pupil diameter of the eye, a setting unit which sets a reference value of at least one of the pupil area and the pupil diameter, and an informing unit which informs at least one of a detection value of the detection unit along with the set reference value and a comparison result thereof.

Abstract: A corneal surgery apparatus capable of accurately obtaining torsion information on an eyeball or positional information on an eye even during laser irradiation or after a cornea is incised into a layer, and of accurately performing corneal surgery with a laser beam. The apparatus, for ablating a cornea of a patient's eye by irradiation of a laser beam, includes an irradiation optical system for irradiating the laser beam onto the cornea, an image-pickup device for picking up an image of an anterior-segment of the eye, a mark detection device for processing the obtained image of the anterior-segment and detecting a mark provided to the eye, a reference position setting device for setting a reference position in which the mark being detected is to be positioned, and a torsion detection device for obtaining torsion information on the eye based on the detected mark and the set reference position.

Abstract: A corneal surgery apparatus for correcting a refractive error by ablating corneal tissue with a laser beam, which is capable of finding a pattern of correction optimum for a patient so as to ensure precise correction, and a method of determining correction data. The corneal surgery apparatus is provided with input means for inputting refractive power data on a contact lens used on a trial basis, calculation means for converting the refractive power data to obtain ablation data, control means for controlling an ablation amount of the corneal tissue based on the ablation data, storage means for storing the refractive power data in correspondence with each contact lens, and revising means for revising the refractive power data on the contact lens.