望眼欲穿

wàngyǎn-yùchuān

[gaze anxiously till one's eyes are overstrained; bore one's eyes through by gazing anxiously; eagerly look forward to meeting a dear one] 形容期盼亲人归来的迫切心情

昨日折到后, 又未接信。 澄弟近写信, 极勤且详, 而京中犹有望眼欲穿之时。 --《曾文正公》