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Table 1 Demographics of the patients before IOL implantation

From: Trifocal diffractive intraocular lens implantation in patients after previous corneal refractive laser surgery for myopia

Item

Number or Mean ± SD (range)

Number of eyes (N)

21

Number of patients (n)

16

Sex (male/female, n/n)

5/11

Years after refractive surgery

13.2 ± 4.3 (3, 21)

Refractive surgery procedures (numbers of eyes), (percentage)

 PRK

7 (33.3%)

 LASIK

14 (66.7%)

Symptoms (numbers of patients), (percentage)

 Bilateral

5 (31.3%)

 Unilateral

11 (68.7%)

Eyes with modified aphakic refraction technique

11 (52.4%)

Mean age (Years) ± SD (range)

48.5 ± 8.9 (36, 66)

Mean pre-UDVA (logMAR) ± SD (range)

0.83 ± 0.48 (0.22, 1.70)

Mean pre-CDVA (logMAR) ± SD (range)

0.37 ± 0.30 (0.00, 1.00)

Mean pre-SE (D) ± SD (range)

−5.49 ± 5.75 (−18.75, + 1.37)

Mean axial length (mm) ± SD (range)

27.70 ± 2.20 (25.13, 33.00)

Mean keratometry (D) ± SD (range)

38.36 ± 2.27 (34.34, 41.94)

Mean power implanted IOL (D) ± SD (range)

17.64 ± 3.87 (8.0, 23.00)

  1. IOL intraocular lens, LASIK laser in situ keratomileusis, PRK photorefractive keratectomy, UDVA uncorrected distance visual acuity, SE spherical equivalent, pre- preoperative