Retrospective Comparison of Intraoperative Parameters, Efficacy and Safety in Cataract Surgery Between Halogen and Light-Emitting Diode (LED) Illuminated Surgical Microscope

Figures & data

Table 1 Clinical Characteristics of Cataract Patients Between Halogen-Illuminated Microscope Group and LED-Illuminated Microscope Group, N(%)

	Halogen Group	LED Group
Age (years)	66.27±10.39^a	67.49±7.79^a
Gender
Male	45(40)	60(53)
Female	68(60)	54(47)
Laterality
Right	58(51)	63(55)
Left	55(49)	51(45)
LOCS II nuclear grading
N0	10(9)	11(10)
N1	59(52)	64(56)
N2	33(30)	29(25)
N3	5(4)	6(5)
Mature cataract	6(5)	4(4)
IOL
Preloaded IOL	69(61)	63(55)
Non-Preloaded IOL	44(39)	51(45)

Note: ^aValues presented as mean ± standard deviation.

Table 2 Comparison of Ultrasound Time Between Halogen-Illuminated Microscope Group and LED-Illuminated Microscope Group

	N (Cases)	Mean Ultrasound Time ± SD (Seconds)	Mean Difference ± SD (Seconds)	P Value^a	95% Confidence Interval
Halogen	98^b	121.29±53.60	−2.69±8.44	0.573	−19.35 to 13.97
LED	88^b	123.98±61.53

Notes: ^aIndependent samples t-test; P < 0.05 was set for significance. ^bData loss due to incomplete or incorrect record of ultrasound time data.

Table 3 Comparison of Operative Time Between Halogen-Illuminated Microscope Group and LED-Illuminated Microscope Group

	N (Cases)	Mean Operative Time ± SD (Minutes)	Mean Difference ± SD (Minutes)	P Value^a	95% Confidence Interval
Halogen	113	19.83±4.77	2.63±0.53	< 0.001	1.59 to 3.67
LED	114	17.20±3.02

Notes: ^aIndependent samples t-test; P < 0.05 was set for significance.

Table 4 Comparison of Proportion of Cases with 3-Months Best Corrected Visual Acuity (BCVA) Better Than 20/30 Tested by the Snellen Chart Between Halogen-Illuminated Microscope Group and LED-Illuminated Microscope Group

	N (Cases)	Patients with 3-Months BCVA Better Than 20/30 (Cases)	Proportion of Patients with 3-Months BCVA Better Than 20/30 (Percentage)	P Value^a
Halogen	111^b	104	93.69	0.553
LED	111^b	106	95.50

Notes: ^aPearson’s Chi-squared test; P < 0.05 was set for significance. ^bData loss due to patients lost to follow-up.

Table 5 Comparison of Proportion of Cases with Intraoperative Complications Between Halogen-Illuminated Microscope Group and LED-Illuminated Microscope Group

	N (Cases)	Patients with Intraoperative Complications (Cases)	Proportion of Patients with Intraoperative Complications (Percentage)	P Value^a
Halogen	113	4^b	3.54	0.701
LED	114	3^c	2.63

Notes: ^aPearson’s Chi-squared test; P < 0.05 was set for significance. ^bOne case with dropped nucleus and three cases with PC rupture. ^cOne case with dropped nucleus and two cases with PC rupture.