Table 2

Outcome of ROP treatment with IVB and laser photocoagulation in infants with posterior ROP (zone I and posterior zone II) and peripheral zone II ROP

ParameterPosterior zonePeripheral zone IIp Value
Zone IZone II
IVBIVBLaserIVBLaser
Time to complete regression (days)9 (6 to 11.5)13 (11 to 19)57 (28 to 63)25 (13.5 to 34.5)24 (12 to 45)<0.001
Visual acuity* (cycle/degree)1.45 (0.63 to 4.7)4.75 (1.6 to 4.7)4.7 (4.7 to 4.7)5.55 (1.6 to 9.6)4.6 (1.6 to 4.7)0.298
Spherical equivalent* (dioptres)1.75 (1.25 to 2.5)0.12 (−0.75 to 1.75)1.0 (−1.5 to 1.5)3.0 (2.0 to 4.0)1.5 (0.38 to 3.0)<0.001
  • Data represent n (%) or median (IQR). The p value describes the differences between the patient groups in posterior ROP (zone I and zone II pooled together) versus peripheral zone II ROP. Statistically significant p values are highlighted in bold.

  • *Pooled data of right and left eyes.

  • IVB, intravitreal bevacizumab; ROP, retinopathy of prematurity.