The first step is to inject bevacizumab into the anterior chamber 48 to 72 hours before repair surgery. Corneal paracentesis is performed, immediately followed by anterior chamber washout. Then, trypan blue is injected into the anterior chamber under air to stain the fibrovascular tissue. This is followed by viscosurgery to mechanically separate the fibrotic tissue from the iris stroma. With alternating unimanual and bimanual techniques, de Smet forceps and scissors are used to extract fibrovascular tissue from the surface of the iris, the angle, and the pupil area. Finally, the viscoelastic is removed from the anterior chamber and 0.05 mL of bevacizumab is again injected.
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