Method and apparatus for prediction of post-operative perceived iris color

a technology of perception and iris color, applied in laser surgery, eye surgery, computer-aided planning/modelling, etc., can solve the problems of complex prediction and unlikely to provide an accurate prediction

Inactive Publication Date: 2022-08-25
STROMA MEDICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables accurate pre-procedure prediction of iris color, managing patient expectations and avoiding permanent discoloration by providing a reliable aesthetic outcome prediction.

Problems solved by technology

In the case of laser eye-color change, prediction is complicated by the occlusion of the stromal fibers by the stroma pigment.
Unfortunately, this is unlikely to provide an accurate prediction of post-operative color because a relatively large area of stromal fiber exposure is required to generate backscatter sufficient for a reasonably accurate prediction.

Method used

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  • Method and apparatus for prediction of post-operative perceived iris color
  • Method and apparatus for prediction of post-operative perceived iris color

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Embodiment Construction

[0009]The mechanisms behind iris color are surprising for at least a couple of reasons. First, under every brown iris is a blue or green iris. If the brown pigment is removed, the underlying green or blue iris is revealed. Second, a green or blue iris is not actually green or blue. Instead, the visible light entering the iris is scattered by the gray iris fibers into the light's various wavelengths (i.e., colors or, more specifically, hues). The shorter wavelengths (blue and, in some cases, green) bend and backscatter, mixing to varying degrees with the reflected light of the gray iris fibers, and creating the appearance of a blue or green iris. The longer wavelengths (red, orange, yellow, and, in some cases, green) are absorbed by the thick layer of pigment on the back of the iris (known as the Iris pigment epithelium or “IPE”) before they have the opportunity to bend and backscatter. As a result, only the blue or green light is visible.

[0010]U.S. Pat. Nos. 6,306,127 and 8,206,379 ...

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Abstract

The present invention predicts prior to a laser iris color-change procedure what a patient's iris color will be after the procedure. The present invention does so by identifying and measuring a variety of anatomical features of the patient's eye that affect or are otherwise relevant to predicting the patient's post-operative iris color, translating these measurements into a post-operative iris color prediction, and communicating this prediction to the patient in a manner sufficient to manage the patient's expectations with respect to the aesthetic outcome of the procedure.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. patent application Ser. No. 16 / 631,435, filed Jan. 15, 2020, which is the national phase entry of PCT Application No. PCT / GB2017 / 052410, filed on Aug. 16, 2017, which is a continuation-in-part of PCT Application No. PCT / IB2016 / 054907, filed Aug. 16, 2016. The content of the foregoing applications is incorporated herein in its entirety by reference.BACKGROUND OF THE INVENTION[0002]The mechanisms behind iris color are surprising for at least a couple of reasons. First, under every brown iris is a blue or green iris. If the brown pigment is removed, the underlying green or blue iris is revealed. Second, a green or blue iris is not actually green or blue. Instead, the visible light entering the iris is scattered by the gray iris fibers into the light's various wavelengths (i.e., colors or, more specifically, hues). The shorter wavelengths (blue and, in some cases, green) bend and backscatter, mixing ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): A61F9/008G16H20/40G16H50/20
CPCA61F9/008G16H20/40G16H50/20A61F2009/00851A61F2009/00876A61F2009/00878A61B34/10A61B2034/104G06T7/90G06F16/5838G06T7/0014G06T11/001G06T11/206G06T13/00G06T2207/10024G06T2207/30041
InventorHOMER, GREGG
OwnerSTROMA MEDICAL CORP