Comprehensive Review of the Literature on Existing Punctal Plugs for the Management of Dry Eye Disease

Figure 4

Snug Plug (FCI) is a punctal plug that is preloaded in a stretched position (a) compared to its natural shape (b) after release from inserter. The plug is on stretch for insertion with the goal of eliminating the step of punctal dilation prior to insertion. The widened bulb at the plug’s base in the natural position acts to prevent the plug from falling out spontaneously. Each dash in scale represents 1 mm.

(a)

(b)