Skip to content

Blog

Red and Green Holiday Lights That Look the Same? How Color Vision Works, and What Color Vision Deficiency Is

The holiday season is full of reds and greens: wreaths, ribbons, string lights, wrapping paper. For most people those colors pop. For some, they blur into similar shades, and many of those people do not even realize it. That is color vision deficiency, often called color blindness. What color vision deficiency is The National Eye Institute (NEI) explains that color vision deficiency means you see… Read More »Red and Green Holiday Lights That Look the Same? How Color Vision Works, and What Color Vision Deficiency Is

Why Holiday Lights Look Starry at Night: How Your Pupil, Cornea and Lens Shape What You See

Strings of lights on rooftops, a lit tree in the window, and car headlights on a rainy night. This time of year, many people notice that bright points of light look like little stars or have soft rings around them. Some of that is normal optics. Some of it is a clue that your eyes need a checkup. Here is how the eye focuses, and… Read More »Why Holiday Lights Look Starry at Night: How Your Pupil, Cornea and Lens Shape What You See

Nearsighted, Farsighted, Astigmatism or Presbyopia? A Plain-Language Guide to Refractive Errors

Before anyone can talk about glasses, contacts or vision correction, it helps to know what is actually blurring your vision. The National Eye Institute calls these problems refractive errors, and they are the most common vision problem in the country. How a healthy eye focuses Light enters through the cornea, the clear front window of the eye, and passes through the lens behind the pupil.… Read More »Nearsighted, Farsighted, Astigmatism or Presbyopia? A Plain-Language Guide to Refractive Errors