Optical illusions are the tricksters of the puzzle world; they are designed in such a way that they fool our brains and eyes.

Are you ready to test your observation skills? In today’s puzzle series, you can see an inverted 49-number series. With this ...

Fundus photography involves taking a photo of the back of the eye to detect signs of diabetic retinopathy. It is also possible to capture an image of the retina using a smartphone. Diabetic ...