Aqueous humour

A. True Its crystalloid composition is not identical to that of plasma.

B. False It is much lower. Above 20 mmHg is abnormal and suggests glaucoma.

C. True Inhibitors of this enzyme reduce formation and are used in treatment of glau-coma.

D. True This area with its overlying trabeculae is referred to as the canal of Schlemm.

E. False The iris then blocks access to the canal of Schlemm.