The PCI (Precise Coverage Index) expands on the traditional Coverage Index used by foreskin restorers. It separates flaccid and erect milestones so progress can be tracked more accurately for both growers and showers. Many restorers experience long plateaus where flaccid coverage improves but erect coverage has not yet reached its next milestone. The PCI scale helps make those transitions easier to understand.
The Coverage Index (CI) measures how much foreskin covers the glans while flaccid. Early stages focus on gaining skin mobility and glide. Later stages involve rollover and eventually full coverage.
Erect coverage is tracked separately because erection length varies dramatically between individuals. Growers often reach full flaccid coverage long before erect coverage begins. The ECI stages track this second phase of restoration.
Most restorers encounter two major plateaus during progress.
The first hump occurs around CI-3. Skin begins to gather near the corona but does not yet roll over it consistently. This stage can take time because the shaft skin must lengthen enough to allow natural rollover.
The second hump occurs when erect coverage begins. Even after reaching CI-7 or CI-8 while flaccid, erections may still retract the skin completely. Eventually a crease forms during erection, signaling the beginning of erect coverage progress.
Understanding these two transition stages helps restorers stay patient and recognize that progress is still occurring even during long plateaus.