Table 3. Square-root of the CRB for Fringe Zernike coefficients {α_n, n = 2,…, 9, 16} in the exit pupil of the highly aberrated test lens at λ = 0.6328 μm. Units are in waves λ.

Index	(CRB)1/2 [λ]	Index	(CRB)1/2 [λ]
2	6.6 × 10−10	7	3.6 × 10−10
3	6.6 × 10−10	8	3.6 × 10−10
4	1.2 × 10−10	9	2.2 × 10−9
5	6.8 × 10−10	16	1.5 × 10−10
6	1.5 × 10−9