Difei® Diclofenac Sodium Eye Drops (single dose,1mlx5) Instill 1 drop each time, 4-6 times daily。 Eye surgeries: 1 drop at 3, 2, 1 and 0。5 hours respectively prior to surgery; instill 4 times daily beginning 24 hours after cataract surgery and continuing for 2 weeks; instill 4 times daily 15 minutes after corneal refractive surgery and coninuing for 3 days。