Why do blind eyes go blue?

Answered by Jeremy Urbaniak

Blind eyes can sometimes appear blue due to a condition called corneal edema. Corneal edema occurs when there is swelling and fluid buildup in the cornea, the transparent front part of the eye. This can happen as a result of various factors, including eye infections, eye trauma, certain medications, or underlying eye conditions.

When the cornea becomes edematous, it can cause a bluish-gray discoloration of the eye. This happens because the swelling interferes with the normal reflection and refraction of light in the eye. The cornea is responsible for focusing light onto the retina, which allows us to see. When it becomes swollen, it disrupts the normal path of light and can give the eye a blue tint.

It’s important to note that not all blind eyes will appear blue. The color of a blind eye can vary depending on the underlying cause of blindness. In some cases, the eye may appear cloudy or opaque instead of blue.

Additionally, it’s worth mentioning that not all blue eyes are indicative of blindness. Blue eyes are a result of the way light is scattered and absorbed by the iris, the colored part of the eye. The blue color is a reflection of the structure and pigmentation of the iris, rather than a sign of visual impairment.

While some blind eyes may appear blue due to corneal edema, it is not a universal characteristic of blindness. The appearance of a blue eye can vary depending on the underlying cause of blindness, and it’s important to consult with an eye care professional for a proper diagnosis and treatment.