they are not physical eyelets per se. they are plated as the traces are etched after the bare board is drilled.
you can probably add jumper wires to the underside of the pcb to make the fixes.
most switches you can jumper to the connecting row or column to get them working again.
- figuring out how the pcb's rows and columns are wired is usually pretty straight forward. though some production (store bought) keyboards can make some really strange choices for how their rows & columns are wired.
- if you don't have one, get a multimeter that has a continuity check. it will beep or make a noise if the two probes can make a connection. then you can poke around and figure out how it's wired, and plan where to add your jumpers to get it working again (to fix the broken traces)
circled in the picture below, you can see a couple jumpers i have on my old viterbi (well used, abused & LOVED)
- i used the clipped legs off of diodes or resistors, but any small wire will work as well.
and if the pad pulled the whole way off, you'll solder a jumper from the swtich leg to the next pad that the trace is supposed to connect to (usually a diode or the next switch, depends on if it's the row leg or the column leg of the switch that's missing a trace)
what keyboard are we talking about?