Table 1

Study protocol for silicone versus PVP perforated punctum plugs (PPP)

Selection D-30 to D-8Inclusion D1D60D180
• punctum size• punctum size• plug lumen, secretions• punctum size or plug lumen
• prior washing• epiphora score• tolerance• epiphora score
• lacrimal scintigraphy• epiphora score• washing
• PPP implantation• lacrimal scintigraphy
• removal of PPP according tolerance
  • Perforated plugs were removed in case of mediocre tolerance: 20/20 for silicone, 10/20 for PVP.