eye holes are pretty big..
i make them like VERTICAL buttonholes.
knit to eye hole point. bind off X (1 inch? more? a double hole (ie a single hole for both eyes? maybe 4 inches?)
IF Knitting in rounds
R2: knit to bind off (begining of eye hole)
turn work as if knitting flat. work to other edge
turn work and knit back to eye hole edge
NOW cast on (use simple, (aka backward loop) or twisted backwards loop or knit cast on X (as many as you bound off.
IF there is a space (ie 2 eye holes and not 1 double with 1)
at the space take some scrap yarn and Knit 1 row, purl 1 row, knit 1 row drop yarn, and KNIT across those stitches,
then cast on for second eye hole..
continue to work in the round