It was previously believed that our pupil size was only affected by three things: light, focusing on nearby objects and cognitive effects.

We may be more likely to see snakes this time of year, as the weather warms. Use this information to make encounters less ...

Learn about when to start wearing reading glasses depending on age and vision changes, and explore the top five brands to ...

Scientists at MIT have created a new kind of artificial muscle that can flex and move in multiple directions, much like real ...

Start with the basic shape of the eye, sketching the outline with light pencil strokes. Add the iris and pupil, paying attention to their proportions. Shade the sclera lightly to give it depth ...

As the weather gets warmer, snakes will begin to appear. In Louisiana, there are seven venomous snake species. What they are ...

Encountering a snake in the wild can be startling, but knowing how to quickly identify a venomous one could be lifesaving.

A 49-year-old white woman was referred by an outside eye provider to the glaucoma service at Tufts Medical Center for ...

Look for its eyes. Another tip is to check out the snake’s pupil shape. Venomous snakes have been said to have oblong pupils that look like a slit in the center of the eye, whereas nonvenomous ...