Figure 2. Grading of central lens vault.

Different grades of lens vault noted at the centre of cornea from slit lamp imaging (a) and AS-OCT imaging (b). The thickness of the tear reservoir (marked in green after instillation of sodium fluorescein) indicates the magnitude of lens vault. From left to right (panels A to E) are arranged in an ascending order of lens vault. The corresponding grades are mentioned at the bottom of each panel. Grade '0' in the middle (panel C) indicates an optimum central lens vault. Grade -1 and +1 (panels B and D) indicates central vault still within "acceptable" range. However, grade -2 and +2 (panels A and E) indicates central vault that is "not acceptable" and needs immediate attention for modification.