Fig 1.
Boxplot indicating the root mean squared wavefront error WFE (row 1), the root mean squared ray scatter RMSS (row 2), the mean absolute ray scatter MAS (row 3), and the total spot size TSD (row 4).
Best focal planes BFP-WF, BFP-RMS, BFP-MA, and BFP-TSD refer to the focal plane with the lowest RMS wavefront error, the lowest RMS ray scatter, the lowest mean absolute scatter, and the lowest total spot diameter respectively. This means that the optimisation was performed for the situations shown on the diagonal of the plot (row 1 / column 1 to row 4 / column 4).
Table 1.
Descriptive statistics of the input data with mean, standard deviation (SD), median, minimum and maximum, 0.5%, 5%, 95% and 99.5% quantiles (90% and 99% confidence intervals).
Table 2.
Descriptive statistics of the locations of the 4 best focus planes (zF) together with the respective corneal power CP referenced to the corneal front apex plane.
Fig 2.
RMS wavefront error referenced to RMS wavefront error at BFP-WF, RMS ray scatter referenced to RMS ray scatter at BFP-RMS, MA ray scatter referenced to MA ray scatter at BFP-MA, and total spot diameter TSD referenced to TSD at BFP-TSD.
Best focal planes BFP-WF, BFP-RMS, BFP-MA, and BFP-TSD refer to the focal plane with the lowest RMS wavefront error, the lowest RMS ray scatter, the lowest mean absolute scatter, and the lowest total spot diameter respectively.
Table 3.
Descriptive statistics of the spherical aberration (Zernike coefficient Z40, considered at corneal front apex plane with a diameter of 6 mm) and the keratometer index derived from corneal power CP for the 4 best focus planes indicating lowest RMS WF error (BFP-WF), lowest RMS spot size (BFP-RMS), lowest mean absolute scatter (BFP-MA), and lowest overall spot diameter (BFP-TSD).
Fig 3.
Difference of corneal power referenced to corneal front apex plane derived from best focus planes BFP-WF, BFP-RMS, BFP-MA, and BFP-TSD and keratometric power.
Keratometric power was calculated using (nK-1)/Rf with nK optimised for best focus planes 1: nK = 1.3317, 2: nK = 1.3309, 3: nK = 1.3308, 4: nK = 1.3311. Best focal planes BFP-WF, BFP-RMS, BFP-MA, and BFP-TSD refer to the focal plane with the lowest RMS wavefront error, the lowest RMS ray scatter, the lowest mean absolute scatter, and the lowest total spot diameter respectively.
Table 4.
Descriptive statistics of the difference between corneal power and keratometric power.