JP2018033807A5 - - Google Patents

Claims (5)

An intraocular lens power determination device that determines the power of an intraocular lens to be inserted into a subject's eye,
Cross-sectional imaging means for imaging an anterior segment cross-sectional image of the eye to be examined;
Calculation control means for calculating the power of the intraocular lens,
The arithmetic control means obtains the capsule diameter of the crystalline lens of the eye to be examined by analyzing the cross-sectional image of the anterior eye part, estimates the expected postoperative anterior chamber depth of the intraocular lens using the capsule diameter, An intraocular lens power determining apparatus that calculates the power of the intraocular lens based on the expected postoperative anterior chamber depth.   2. The intraocular lens power determination device according to claim 1, wherein the arithmetic control unit estimates the predicted postoperative anterior chamber depth based on the capsule diameter and a characteristic parameter of the intraocular lens. The characteristic parameter includes at least the total length of the intraocular lens;
The intraocular lens power according to claim 2 or 3, wherein the arithmetic control unit corrects the predicted value of the predicted postoperative anterior chamber depth to the posterior capsule side as the capsule diameter is smaller than the full length. Decision device. The characteristic parameter includes at least the total length of the intraocular lens;
The calculation control means compares the total length with the size of the sac diameter, and determines whether or not the intraocular lens is suitable for the eye to be examined based on the comparison result. Intraocular lens power determination device. An intraocular lens power determination program that is executed in an intraocular lens power determination device that determines the power of an intraocular lens to be inserted into a subject's eye, and is executed by a processor of the intraocular lens power determination device,
A cross-sectional imaging step of capturing an anterior segment cross-sectional image of the eye to be examined;
A capsule diameter acquisition step of acquiring a capsule diameter of the crystalline lens of the eye to be examined by analyzing the cross-sectional image of the anterior segment imaged in the cross-section imaging step;
An estimation step for estimating a postoperative predicted anterior chamber depth of the intraocular lens using the sac diameter acquired in the sac diameter acquisition step;
An intraocular lens power determination program that causes the intraocular lens power determination device to execute a calculation step of calculating the power of the intraocular lens based on the postoperative predicted anterior chamber depth estimated in the estimation step. .