Comparison between Refractive Outcome of Primary Piggyback Intraocular Lens versus Secondary Lens Iris Claw Lens in Posterior Microphthalmos

Table 1

Preoperative characteristics of the included eyes (60 eyes of 30 patients divided equally into two groups).

	1ry piggyback (n = 30) mean + SD range	2ry Artisan (n = 30) mean + SD range	value
Male : female	6 : 9	8 : 7	0.464^a
Age (years)	22.7 + 4.1(18–29)	22.2 + 3.5 (19–30)	0.781^b
MRSE (D)	14.52 + 2.3 (10.5–18.25)	14.57 + 2.5 (10–18.5)	0.925^b
CDVA (log MAR)	0.43 + 0.15 (0.2–0.7)	0.45 + 0.16 (0.3–0.8)	0.638^b
AL (mm)	16.6 + 1.2 (14.9–19.3)	16.7 + 1.2 (15.1–19.0)	0.854^b
CCT (microns)	523.1 + 22.6 (499–551)	528.4 + 21.1 (502–559)	0.545^b
K readings (D)	47.5 + 2.4 (43.0–52.0)	47.3 + 2.5(43.5–51.0)	0.635^b
Corneal diameter	11.95 + 0.30 (11.50–12.20)	11.85 + 0.28 (11.40–12.25)	0.565^b
ACD (mm)	2.95 ± 0.11 (2.82–3.3)	3.01 ± 0.21 (2.85–3.4)	0.487^b

MRSE: manifest refraction spherical equivalent; CDVA: corrected distance visual acuity; AL: axial length; CCT: central corneal thickness; K: keratometry; ACD: anterior chamber depth. ^aChi-square test; ^bindependent sample t-test.