Historical clue formulations

• Necessity for a teacher — 2020-11-09
• It gets bigger in the dark — 2019-04-17
• Star ___ — 2019-03-28
• Dilating eye part — 2018-11-27
• It grows in the dark — 2017-10-19
• It grows in the dark — 2017-03-24
• Person at a desk — 2017-02-22
• It shrinks in the light — 2014-12-28
• Eliza, to Henry Higgins — 2013-06-10
• Part of the eye — 2013-03-11
• Tutee — 2008-12-29
• Trainee — 2005-05-15
• Iris's center — 2002-07-03
• Student of optometry? — 1994-05-17