usually vertical to the angle you’re looking at it from, you know the thing where they become slightly blurry but stretch out in two lines? why does that happen when you squint?
In: Biology
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Those are diffraction spikes. Basically, the light entering your eye can get spread out if the entrance is small. That’s why it only happens when you squint your eyes, and it’s why the effect gets stronger the closer your eye lids get together. The smaller the slit, the more the light gets bent.
https://en.wikipedia.org/wiki/Diffraction_spike
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