Ophthalmic apparatus
AssigneeNidek Co., Ltd.
InventorsKazunari Shimizu, Hiroyuki Hiramatsu
Life of this patent
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Abstract
An ophthalmic apparatus for guiding positioning an intraocular lens for astigmatism correction, includes: an obtaining unit for obtaining an anterior segment image of a patient's eye and an astigmatic axis of a patient's cornea; a feature point designating unit for defining a feature point of an iris or a sclera on the anterior segment image; and a display control unit for superimposing and displaying a gauge image that models a cornea gauge and an axis that represents the astigmatic axis of the cornea on the anterior segment image.
Claims11
An ophthalmic apparatus for guiding positioning an intraocular lens for astigmatism correction, comprising:
- an obtaining unit for obtaining an anterior segment image of a patient's eye and an astigmatic axis of a patient's cornea;
- a monitor for displaying the anterior segment image obtained by the obtaining unit;
- a display control unit for superimposing a meridian obtained based on the astigmatic axis of the cornea, the meridian serving as a reference for positioning of an intraocular lens, and a reference line on the anterior segment image, to be displayed on the monitor;
- and
- an angle change unit for changing an angle of the reference line with respect to the meridian serving as a reference for positioning of an intraocular lens, the angle change unit rotating the reference line to an arbitrary rotation angle with the meridian serving as a reference and the reference line superimposed on the anterior segment image and displayed on the monitor.
An ophthalmic apparatus for guiding positioning an intraocular lens for astigmatism correction, comprising:
- an obtaining unit for obtaining a retro-illumination image of a patient's eye in which a toric intraocular lens is installed and an astigmatic axis of a patient's cornea;
- a monitor for displaying the retro-illumination image obtained by the obtaining unit;
- a feature point designating unit for defining on the monitor a mark that represents an axis of the intraocular lens included in the retro-illumination image displayed on the monitor as a feature point;
- and
- a display control unit for superimposing the axis of the intraocular lens running on the mark and an axis that represents the astigmatic axis of the cornea on the retro-illumination image to be displayed on the monitor, wherein the display control unit controls a display on the monitor so that an angle of the axis that represents the astigmatic axis with respect to the axis of the intraocular lens running on the mark can be recognized.
Dependencies are inferred from the claim text.