Comparing Visual Acuity, Low Contrast Acuity and Contrast Sensitivity After Trifocal Toric and Extended Depth of Focus Toric Intraocular Lens Implantation

Figures & data

Table 1 Subject Demographics and Preoperative Biometry

	EDOF	Trifocal	p
n (subjects/eyes)	25/50	25/50
Female/male	16/9	16/9
Cataract surgery/RLE	15/10	9/16	0.08
Age (years)	61.5 ± 7.4 (48 to 75)	59.0 ± 8.3 (50 to 81)	0.26
IOL sphere power (D)	19.41 ± 5.25 (8.0 to 30.5)	22.16 ± 4.35 (12.0 to 29.0)	0.01
Average keratometry (D)	43.48 ± 1.46 (39.90 to 46.17)	43.30 ± 1.92 (38.88 to 47.28)	0.60
Keratometric cylinder (D)	1.65 ± 0.53 (0.72 to 3.08)	1.71 ± 1.02 (0.16 to 4.83)	0.74

Abbreviations: EDOF, extended depth of focus; RLE, refractive lens exchange; IOL, intraocular lens; D, diopter.

Table 2 Postoperative Refractive Data by Group

	EDOF	Trifocal	p
n	50	50
Manifest sphere (D)	0.06 ± 0.31 (−1.00 to 0.75)	0.29 ± 0.35 (−0.75 to 1.25)	< 0.01
Manifest cylinder (D)	0.27 ± 0.31 (0.00 to 1.25)	0.29 ± 0.27 (0.00 to 1.25)	0.73
MRSE (D)	−0.08 ± 0.31 (−1.13 to 0.50)	0.15 ± 0.37 (−0.88 to 1.00)	< 0.01
Eyes with absolute MRSE ≤ 0.50D	47 (94%)	43 (86%)	0.18
Eyes with ≤ 0.50D of cylinder	45 (90%)	46 (92%)	0.75

Abbreviations: EDOF, extended depth of focus; MRSE, mean refraction spherical equivalent; IOL, intraocular lens; D, diopter.

Table 3 Subjects with a Given Binocular VA at the Reported Distance(s) and Correction

Criterion	Distance	Correction	EDOF (n = 25)	Trifocal (n = 25)	p
0.1 logMAR (20/25)	40 cm	Uncorrected	13 (52%)	22 (88%)	0.006
		Best distance-corrected	15 (60%)	22 (88%)	0.02
	All distances	Uncorrected	13 (52%)	22 (88%)	0.006
		Best distance-corrected	15 (60%)	22 (88%)	0.02
0.0 logMAR (20/20)	40 cm	Uncorrected	3 (12%)	9 (28%)	0.047
		Best distance-corrected	4 (16%)	12 (48%)	0.015
	All distances	Uncorrected	3 (12%)	5 (20%)	0.44
		Best distance-corrected	4 (16%)	11 (44%)	0.03

Abbreviations: VA, visual acuity; EDOF, extended depth of focus; logMAR, log of the minimum angle of resolution; cm, centimeters.

Figure 1 Binocular visual acuity by IOL group and viewing distance.

Abbreviations: EDOF, extended depth of focus; logMAR, log of the minimum angle of resolution; m, meters; cm, centimeters; IOL, intraocular lens.

Figure 2 Low contrast (10%) visual acuity in photopic and mesopic conditions by the IOL group.

Abbreviations: EDOF, extended depth of focus; logMAR, log of the minimum angle of resolution; m, meters; cm, centimeters; Min, minimum; Max, maximum; IOL, intraocular lens.

Figure 3 Contrast sensitivity by IOL group and illumination condition.

Abbreviations: EDOF, extended depth of focus; cpd, cycles per degree; IOL, intraocular lens.