English: Calculating EZ ratio: This is a side view of the right eye. The purple line is a tangential line drawn at the limbus. The blue line passes through the limbus, pupil centre and cornea and represents the direction of gaze. L is the limbus point, P is the pupil centre point, and C is the corneal point. The more forward the pupil is located, the higher the ratio between E (LP) and Z (LC) and the shallower the anterior chamber.
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