Obtaining and Displaying Histogram and/or Confidence of Intra-Operative Refraction and/or IOL Power Recommendation

US20170290502A1Inactive Publication Date: 2017-10-12CLARITY MEDICAL SYST

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$Obtaining and Displaying Histogram and/or Confidence of Intra-Operative Refraction and/or IOL Power Recommendation$
$Obtaining and Displaying Histogram and/or Confidence of Intra-Operative Refraction and/or IOL Power Recommendation$
$Obtaining and Displaying Histogram and/or Confidence of Intra-Operative Refraction and/or IOL Power Recommendation$

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Embodiment Construction

[0017]Intra-operative refraction of a patient eye (or alternatively, a subject eye) undergoing a refractive cataract surgery using an intra-operative refraction measurement device such as a wavefront aberrometer or auto-refractor has been shown to improve the refractive surgical outcome. Traditionally, ophthalmic refraction measurements are done in a snap-shot or single measurement manner (although such a single measurement can involve the averaging of a number of snap shots of measurements). When such a measurement is transferred to intra-operative refraction of a patient eye undergoing a refractive cataract surgery, it tends to hide the variability of the measurement result as the refraction of an eye undergoing a surgery is dependent on a number of dynamic surgical factors, including the alignment of the eye relative to the intra-operative refraction device, the condition of the cornea as well as the condition of the anterior chamber of the eye. In fact, even with the use of a sn...

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Abstract

In order to take advantage of the real time nature of intra-operative refraction or wavefront aberrometry, and visually make the history of the measurements apparent to a surgeon, a histogram of frequency vs IOL results calculated from an IOL formula is computed and IOL suggestions being accumulated are displayed in a histogram. One embodiment is a means to present to a surgeon a histogram of intra-operative refractions. Another embodiment is to automatically and intra-operatively detect the aphakic phase of a cataract surgery to display a histogram of a recommended IOL power.

Description

TECHNICAL FIELD OF THE INVENTION[0001]One or more embodiments of the present invention relate generally to intra-operative refraction or wavefront aberrometry. In particular, one embodiment is related to means to present to a surgeon the histogram and / or confidence level of intra-operative refraction or wavefront aberrometry measurement during a cataract surgery, especially the histogram, and / or confidence level of aphakic refraction and / or the associated intra-ocular lens (IOL) power recommendation.BACKGROUND OF THE INVENTION[0002]A need has been identified in recent years in terms of providing real time intra-operative refraction or wavefront measurement feedback to a surgeon performing a refractive cataract surgery or other vision correction procedures on the eye of a patient. The intra-operative refraction or wavefront measurement, especially one obtained from an aphakic eye when the natural lens of the eye is removed, can help to guide a surgeon better determine the optical pow...

Claims

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Application Information

Patent Timeline

12 Oct 2017

Publication

US20170290502A1

IPC: A61B3/00; A61B3/15; A61B3/10

CPC: A61B3/0025; A61B3/0058; A61B3/152; A61B3/1015; A61B3/103; A61F9/00736; A61F9/008; A61F9/00825

Inventors: LINDER, BARRY; ZHOU, YAN