What does a cobalt blue eye ophthalmologist do?

After a few moments, the dye will feel like normal liquid on the eye and will no longer be uncomfortable. Your eye surface may have a light yellow appearance. Your ophthalmologist will then shine a cobalt-blue light onto your eye through a tool made for examining eyes. This tool is called a slit-lamp or ophthalmoscope.

How does cobalt blue eye dye work?

You may feel a slight stinging sensation when the dye is first applied. After a few moments, the dye will feel like normal liquid on the eye and will no longer be uncomfortable. Your eye surface may have a light yellow appearance. Your ophthalmologist will then shine a cobalt-blue light onto your eye through a tool made for examining eyes.

What is cobalt blue?

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Cobalt blue is a blue pigment made by sintering cobalt (II) oxide with aluminum (III) oxide (alumina) at 1200 °C. Chemically, cobalt blue pigment is cobalt (II) oxide-aluminium oxide, or cobalt (II) aluminate, CoAl 2 O 4.

Are blue eyes a risk factor for cataracts?

A cataract is a clouding of the eye's lens. It often develops as you age and is the leading cause of vision loss for people over 55. If you have a darker iris color, you are at a greater risk of developing this eye disease. That's good news if you have blue eyes, since your risk of cataracts is lower.