Developer Builds Free Browser-Based Astigmatism Screening Tool Using Siemens Star

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A developer has created a free online astigmatism screening tool at sighthealthpro.com, designed to take under 30 seconds and require no account or signup. The tool uses a Siemens Star — a radial pattern of black and white lines — where blurry or grey lines in certain directions can indicate astigmatism. Astigmatism affects roughly one in three adults, many of whom are unaware they have the condition. The tool is intended as a screening aid, not a medical diagnosis, and users flagged by the test are advised to consult an optometrist for a proper examination.

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