ガン ゲン 
まなこ  
() eyeball
      
まなこ (n) (1) eye, eyeball, (2) eyesight, sight, vision, (3) look, stare, glance, (4) experience, (5) viewpoint, (6) stitch, texture, weave, (suf) (7) ordinal number suffix, (8) somewhat, -ish
(n) (1) eye, eyeball, (2) eyesight, sight, vision, (3) look, stare, glance, (4) experience, (5) viewpoint, (6) stitch, texture, weave, (suf) (7) ordinal number suffix, (8) somewhat, -ish
がんか (n,adj-no) ophthalmology
がんかい (n) ophthalmologist, eye specialist
がんきょう (n) (1) spectacles, glasses
めがね (n) (1) spectacles, glasses, (2) judgement, discrimination, discernment, insight
まなざし (n) (a) look, gaze

Links: KanjiDic: EDict : Wikimedia
Etymologies: 中文字譜 : 説文解字