Astigmatism causes Christmas tree lights to appear like twinkling stars

buzzfeed.com (Japanese)

A TikTok video showing how Christmas tree lights appear to people with astigmatism has gone viral, sparking widespread discussion. The user, who has astigmatism, described the lights as appearing like "twinkling stars," a beautiful effect they prefer. This contrasts with the typical view of non-astigmatic individuals. The post has garnered over 8 million views, with many astigmatic viewers sharing their own positive experiences and comparing it to the less dazzling view of those with normal vision.


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