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What is Jackson Cross Cylinder in Astigmatism about?

This document describes the Jackson Cross method for correcting astigmatism. It involves using a special lens called a Jackson Cross cylinder, which has equal and opposite cylinders at right angles to identify the axis and power of astigmatism. The method collapses the conoid of the astigmatic eye onto the retina simultaneously by first using sphere to place the circle of least confusion on the retina, then using the Jackson Cross cylinder.

Author

PAM ALVARADO

Language

EN