MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202611113791 A) filed by Chandigarh University on September 23, 2026, for Portable Automated Retinoscope For Single-Capture Objective Determination Of Refractive Error.
Inventors include Apsara Das Shreshtha; Labishetty Sai Charan; and Tara Rani.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: A portable automated retinoscope for objective determination of refractive error includes an illumination module, a pattern encoding assembly, projection optics, an objective aperture, collection optics, an image sensor (3), a processing and control unit, and an alignment assembly having a viewing hole (1) and retinoscope sleeve (2). A predefined illumination pattern is projected into an eye and a retinal reflex is captured digitally in a fixed optical configuration. The processing and control unit preprocesses the captured reflex, extracts geometric deformation characteristics including scaling, anisotropy, ellipticity, and angular orientation, and applies a calibrated mathematical inversion model to determine spherical power, cylindrical power, and astigmatic axis from a single captured image. A display unit presents the resulting refractive parameters. An optional short-sequence mode permits differential or time-resolved analysis. The apparatus provides portable, open-view, objective refraction without mechanical scanning or lens neutralization.
Disclaimer: Curated by HT Syndication.
