Optical Illusion: Are these lines straight or do they bend

The cafe wall optical illusion posted on Twitter challenges people to figure out if the lines are straight or bend at an angle.  | Trending

Viral optical illusion: Are these lines straight or curved? Mind-bending optical illusion will leave you shocked! - Times of India

These circles change colours depending on where you look

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Line Illusions

This Bizarre Optical Illusion Shows if You Have 'Curvature Blindness' : ScienceAlert

Optical illusion lines hi-res stock photography and images - Alamy

Can you make your brain *not* see this circle illusion?

Illusion - Optical, Perception, Phenomena

Optical illusion stock vector. Illustration of brain - 72442052

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