Jackson Cross Cylinder
Introduction of JCC Jackson crossed cylinder is a combination of two cylinders of equal strength but of an opposite sign placed with their axis at 90 degrees to each other and mounted in a handle. Also known as the flip…
Introduction of JCC Jackson crossed cylinder is a combination of two cylinders of equal strength but of an opposite sign placed with their axis at 90 degrees to each other and mounted in a handle. Also known as the flip…
Duochrome test is a manual procedure that is performed as part of the subjective refraction process. Duochrome test is performed using a distance visual acuity chart with black letters, and the chart is split equally into two identical halves. Left…