A retrospective randomized study to compare the energy delivered using CDE with different techniques and OZil^® settings by different surgeons in phacoemulsification

Figures & data

Figure 1 CDE for all cataract patients.

Notes: The exclusion of all cataracts but nuclear sclerosis shows increase in CDE time for all surgeons except #1. Also the burst mode showed lower energy in #1 and #2. Again, #3 shows significantly higher energy by CDE.
Abbreviation: CDE, cumulative dissipated energy.

Figure 2 CDE for nuclear sclerosis patients.

Abbreviation: CDE, cumulative dissipated energy.

Table 1 Cohort, all cataracts

Surgeon	Technique	N total	Seconds mean (SD)
1	Supracapsular/OZil^®-burst	24	8.05 (7.25)
2	Chop/OZil^®-burst	39	9.29 (8.27)
3	Divide–Conquer/OZil^®-continuous	22	31.33 (19.45)
4	Divide–Conquer/OZil^®-continuous	55	14.41 (11.07)

Table 2 Comparisons between individual groups

Surgeon	Technique	Surgeon	Technique	p-value
1	Supracapsular/OZil^®-burst versus	2	Chop/OZil^®-burst	p = 0.548
3	Divide–Conquer/OZil^®-continuous	1	Supracapsular/OZil^®-burst versus	p < 0.001
3	Divide–Conquer/OZil^®-continuous	2	Chop/OZil^®-burst	p < 0.001
3	Divide–Conquer/OZil^®-continuous	4	Divide–Conquer/OZil^®-continuous	p < 0.001
4	Divide–Conquer/OZil^®-continuous	1	Supracapsular2/OZil^®-burst versus	p = 0.012
4	Divide–Conquer/OZil^®-continuous	2	Chop/OZil^®-burst	p < 0.001
4	Divide–Conquer/OZil^®-continuous	3	Divide–Conquer/OZil^®-continuous	p < 0.001

Notes: Dependant variable, seconds; independent variable, strata.