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Improved ocular aberrometer system and method

An aberration and measurement system technology, applied in neural learning methods, calculations, computer components, etc., to solve problems such as suboptimal results of patients' surgery or visual acuity, and inaccurate surgical planning

Pending Publication Date: 2022-04-01
ALCON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Conventional ocular aberrometers often suffer from various measurement errors associated with eye movement and / or misalignment and optical aberrations of the aberrometer itself, which can lead to inaccurate surgical planning and suboptimal surgical or visual outcomes for patients

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  • Improved ocular aberrometer system and method
  • Improved ocular aberrometer system and method
  • Improved ocular aberrometer system and method

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Embodiment Construction

[0019] According to various embodiments of the present disclosure, ocular aberration measurement systems and methods provide substantially real-time measurement and monitoring of aberrations of a patient's eye, reducing systematic and measurement errors typical of conventional systems. For example, when a patient's eye is fixed during an ocular aberration measurement or examination, the eye will naturally drift. This gaze drift includes rolling, squinting, twisting, and changes in x, y, and z position of the eyes. These alignment deviations lead to errors in the calculation of the wavefront-characterizing aberrations of the eye. If the average of these misalignment deviations is close to zero, then averaging the wavefront aberration measurements across frames of the inspected image stream is sufficient to remove most of the misalignment-induced errors. When it is known that the mean value of the alignment deviation of the inspection sequence is not close to zero, or it cannot...

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Abstract

Techniques for systems and methods to provide improved ocular aberration measurements are disclosed. An ocular aberration measurement system (100) includes a wavefront sensor (120) configured to provide wavefront sensor data associated with an optical target (102) monitored by the ocular aberration measurement system (100) and a logic device (140) configured to communicate with the wavefront sensor (120). The logic device (140) is configured to receive (502) eye aberration measurement output data comprising at least wavefront sensor data provided by the wavefront sensor (120), determining (504) an estimated eye alignment deviation corresponding to the relative position and / or orientation of the optical target (102) monitored by the eye aberration measurement system (100) based at least in part on the received eye aberration measurement output data, and generating (508) user feedback corresponding to the received eye aberration measurement output data based at least in part on the estimated eye alignment deviation.

Description

technical field [0001] One or more embodiments of the present disclosure relate generally to ocular aberration measurement, and more specifically, for example, to systems and methods for improving clinical or intraoperative ocular aberration measurement. Background technique [0002] Eye surgery may include reshaping the cornea and / or surfaces of the eye, inserting and / or replacing intraocular devices and / or artificial intraocular lenses (IOLs), and / or other surgical manipulations of the eye's active optical components. For optimal postoperative visual outcomes, good preoperative clinical assessment and surgical planning, as well as intraoperative monitoring of the execution of the surgical plan, are critical. [0003] Ocular aberration measurements performed by ocular aberrometers are typically a common method for characterizing the eye prior to surgery, monitoring surgical progress, and assessing surgical success. Conventional ocular aberrometers often suffer from various...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/00A61B3/10A61B3/103A61B3/113G06V40/18G06V10/82G06N3/04G06N3/08
CPCA61B3/1015A61B3/152G16H50/50G16H50/30A61B3/0025A61B3/0041A61B2505/05A61B3/103
Inventor M·霍尔T·帕德瑞克E·J·萨弗尔
Owner ALCON INC
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