Ophthalmic apparatus
AssigneeTopcon Corporation
InventorYusuke Ono
Life of this patent
Estimating the term…
Abstract
In the ophthalmic apparatus 1 of an aspect example, the image acquiring unit (the fundus camera unit 2, the OCT unit 100, the image data constructing unit 220) acquires an anterior segment image constructed based on data collected from an anterior segment of a subject's eye by OCT scanning. The part image identifying processor 231 performs identification of two or more part images respectively corresponding to two or more parts of the anterior segment from the anterior segment image acquired. The part image assessing processor 232 performs image quality assessment of each of the two or more part images. The anterior segment image assessing processor 233 performs image quality assessment of the anterior segment image based on two or more pieces of assessment data respectively obtained for the two or more part images.
Claims9
An ophthalmic apparatus comprising:
- an image acquiring unit configured to acquire an anterior segment image constructed based on data collected from an anterior segment of a subject's eye by optical coherence tomography (OCT) scanning;
- a part image identifying processor configured to perform identification of a cornea image and identification of an iris image from the anterior segment image acquired by the image acquiring unit;
- a part image assessing processor configured to perform image quality assessment of the cornea image to generate cornea assessment data and image quality assessment of the iris image to generate iris assessment data;
- an anterior segment image assessing processor configured to perform image quality assessment of the anterior segment image by applying a predetermined statistical calculation to the cornea assessment data and the iris assessment data to derive a statistic and by determining whether the statistic satisfies a predetermined condition;
- an image correcting processor configured to perform correction of a pixel aspect ratio of the anterior segment image only under a condition that the statistic is determined to satisfy the predetermined condition by the anterior segment image assessing processor;
- a corner angle analyzing processor configured to perform calculation of a predetermined corner angle parameter by analyzing the anterior segment image whose pixel aspect ratio has been corrected by the image correcting processor;
- a display device;
- and
- a controller configured to display the anterior segment image with the pixel aspect ratio corrected on the display device and display a measurement position and a measured value of the predetermined corner angle parameter over the anterior segment image displayed on the display device.
Dependencies are inferred from the claim text.