drainage

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6) It presents as white dandruff- like material accumulated on the anterior lens surface (Figure 3), at the pupil margin, and in the anterior drainage angle (seen on gonioscopy as a pigmented band anterior to the trabecular meshwork).
The iridectomy often cures the glaucoma but if the drainage angle was damaged by the attack, drug treatment may be needed to control the pressure after surgery.
As slurries settle-out quickly once sprayed, flat surfaces and slurry traps have been designed-out and care has been taken in the engineering to ensure that all surfaces have proper drainage angles.