Vision

The Pupil: What It Is & Why We Have it

Why do Humans Cry?

Why Do We Roll Our Eyes?

The Eye Lens: What You Need to Know

What Prescription is Legally Blind?

The Phoropter: An Essential Tool for Eye Exams

How Far Can the Human Eye See?

What Is the Visible Spectrum?

The Retina: What It Is & How It Works

What Is Depth Perception & How Does It Work?

What is a Visual Acuity Test?

What Exactly Is 20/20 Vision?

What Is 20/30 Vision? (And is It Bad?)