Fig. 30. Scatter diagrams showing the relationship between inner wall sheath-derived (SD) plaques and age in normal eyes (A) and in different forms of glaucoma (B and C). ( Lütjen-Drecoll E, Shimizu T, Rohrbach M, Rohen JW: Quantitative analysis of “plaque material” in the inner and outer wall of Schlemm's canal in normal and glaucomatous eyes. Exp Eye Res 42:443, 1986)