Historical clue formulations

• White of the eye — 2026-09-06
• Outer layer of the eyeball — 2020-04-27
• Cornea neighbor — 2020-04-10
• Eyeball layer — 2018-10-07
• Eyeball cover — 2018-06-01
• White of the eye — 2017-08-04
• Eye part — 2016-11-27
• White of the eye — 2016-11-11
• White of the eye — 2013-09-13
• Cornea neighbor — 2010-10-03
• Eye muscles attach to it — 2010-03-20
• Eyeball covering — 2009-04-12
• Eye cover — 2004-05-19
• White of the eye — 2003-12-14
• It's continuous with the cornea — 2003-03-15
• Eye piece? — 1999-06-05
• Cornea neighbor — 1996-06-09