Duochrome Test in Optometry: Everything You Need to Know

🌈 Duochrome Test in Optometry The Duochrome Test is an essential and simple subjective refraction test used to fine-tune spherical correction in an eye examination. It utilizes the chromatic aberration of the eye to determine whether the patient is overcorrected or undercorrected. In this blog post, we will cover everything about the Duochrome Test, including its definition, purpose, required equipment, step-by-step procedure, interpretation, advantages, limitations, and frequently asked interview questions. 📌 What is the Duochrome Test? The Duochrome Test , also known as the Red-Green Test , is a binocular or monocular subjective test that helps to refine the spherical power during refraction. It is based on the principle of chromatic aberration , where different wavelengths of light focus at different points in the eye. Red light (long wavelength) focuses behind the retina. Green light (short wavelength) focuses in front of the retina. This test helps determine whether the patient is focus…