Figure 4. Comparison of the normalised optical density for corneal stromas equilibrated at 154 mm NaCl at different osmolarities.

▪, 300 mosmol l⁻¹; ▪, 600 mosmol l⁻¹ (achieved by supplementing with sorbitol). Data represent average for five corneas; averaged hydration was 3.12 for 300 mosmol l⁻¹ and 3.14 for 600 mosmol l⁻¹. Bars show s.e.m.