Nystagmus
Four studies reported the outcome on nystagmus
incidence22,34,35,38, and no heterogeneity was found
(I2 = 0%). No statistically difference was found
between the primary IOL and primary aphakia group in terms of nystagmus
[OR=1.11,95%CI: (0.62, 1.98), p=0.73] (Figure 7).