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US 2021/0275012 A1Published application
A method for performing an astigmatism power test using a computing device having a screen for displaying images relating to said astigmatism power test, as well as a corresponding computing device
AssigneeEasee Health B.V.
InventorYves Franco Diano Maria PREVOO
Life of this patent
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Abstract
A method for performing an astigmatism power test using a computing having a screen for displaying images relating to the astigmatism power test. The method includes determining an angle of astigmatism, calibrating visual acuity of the user, determining amplitudes required for the astigmatism correction, and determining the needed refraction, as well as a corresponding computer system.
Claims12
A method for performing an astigmatism power test using a computing device having a screen for displaying images relating to said astigmatism power test, said method comprising:
- determining, by said device, using feedback input received from a user, a calibrated rotation of an elongated image displayed on said screen such that in a calibrated position said user perceives said displayed elongated image the most clear;
- determining, by said device, an angle of astigmatism based on said calibrated rotation of said elongated image;
- calibrating, by said device, using feedback input received from said user, a resolution acuity of said user irrespective of said astigmatism by amending a thickness of at least one first elongated image comprising one or more lines displayed at substantially +45° of said determined angle of astigmatism and/or amending a thickness of at least one second elongated image comprising one or more lines displayed at substantially −45° of said determined angle of astigmatism such that in a calibrated position said user is just able to recognize said at least one first elongated image and/or said at least one second elongated image;
- thickening and/or blurring, by said device, using feedback input received from said user, at least one first elongated image with respect to at least one second elongated image, wherein said at least one first elongated image comprises a plurality of parallel lines arranged at substantially +0° of said determined angle of astigmatism and said at least one second elongated image comprises a plurality of parallel lines arranged at substantially +90° of said determined angle of astigmatism, using said calibrated resolution acuity, such that in a calibrated position said user perceives said at least one first elongated image the same as said at least one second elongated image;
- determining, by said device, a needed refraction based on a difference in thickness and/or blurriness between said at least one first elongated image at substantially +0° and said at least one second elongated image at substantially +90°.
2 more elements
A system for performing an astigmatism power test using a method in accordance with any of the previous claims, said system comprising a computing device having a screen arranged for displaying images relating to said astigmatism power test, said computing device comprising:
- determine equipment arranged for determining, using feedback input received from a user, a calibrated rotation of an elongated image displayed on said screen such that in a calibrated position said user perceives said displayed elongated image the most clear;
- a processor arranged for determining an angle of astigmatism based on said calibrated position of said elongated image;
- calibrate equipment arranged for calibrating, using feedback input received from said user, a resolution acuity of said user irrespective of said astigmatism by amending a thickness of at least one first elongated image comprising one or more lines displayed at substantially +45° of said determined angle of astigmatism and/or amending a thickness of at least one second elongated image comprising one or more lines displayed at substantially −45° of said determined angle of astigmatism such that in a calibrated position said user is just able to recognize said at least one first elongated image and/or said at least one second elongated image;
- adjust equipment arranged for thickening and/or blurring using feedback input received from said user, at least one first elongated image with respect to at least one second elongated image, wherein said at least one first elongated image comprises a plurality of parallel lines arranged at substantially +0° of said determined angle of astigmatism and said at least one second elongated image comprises a plurality of parallel lines arranged at substantially +90° of said determined angle of astigmatism, using said calibrated resolution acuity, such that in a calibrated position said user perceives said at least one first elongated image the same as said at least one second elongated image;
- refraction equipment arranged for determining a needed refraction based on a difference in thickness and/or blurriness between said at least one first elongated image at substantially +0° and said at least one second elongated image at substantially +90°.
2 more elements
Dependencies are inferred from the claim text.