望眼欲穿　

◎ 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] 形容期盼親人歸來的迫切心情

昨日折到后,又未接信。澄弟近寫信,極勤且詳,而京中猶有望眼欲穿之時。——《曾文正公》