Telescopic ocular refraction test apparatus, system, and method

The telescopic ocular refraction test apparatus allows low-vision patients to accurately determine vision correction parameters through a focusable telescope, enhancing their visual acuity by providing precise lens prescriptions for hyperopia, myopia, and astigmatism.

WO2026111764A1PCT designated stage Publication Date: 2026-05-28DR RP HOLDINGS LLC

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
DR RP HOLDINGS LLC
Filing Date
2025-04-22
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

Existing refraction measurement technologies are inadequate for low-vision patients due to their impaired central vision, making it difficult for them to perform subjective refraction measurements, and they often have uncorrected refractive errors that further reduce their visual acuity.

Method used

A telescopic ocular refraction test apparatus and method that uses a focusable telescope with adjustable magnification to enable low-vision patients to clearly view vision testing images, allowing for accurate determination of vision correction parameters such as sphere power, cylinder power, and cylinder axis.

Benefits of technology

Enables low-vision patients to achieve improved visual acuity by providing accurate lens prescriptions, potentially improving uncorrected visual acuity from 20/1000 to 20/200, facilitating precise refractive corrections for hyperopia, myopia, and astigmatism.

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Abstract

A telescopic ocular refraction test system includes a display that displays a vision testing image. The system includes a telescope configured to be positioned in front of an eye of a patient for viewing the vision testing image through the telescope. The system also includes a control system that determines a vision correction parameter based on a position of a focus adjustment device that focuses the telescope.
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