Look back on Time, with kindly eyes — Eye Disorder

Look back on Time, with kindly eyes－1
He doubtless did his best－
How softly sinks that trembling sun
In Human Nature's West－
(F.1251/J.1478)
[1] Time:: the clock hanging on the wall. kindly:: that belongs to one by birth; native; hereditary (OED 2). eyes:: a hint on eye disorder.
[2] his best:: his best to see the clock.
[3] sun:: sun-blind, a shutter-blind.
[4] West:: an inflammatory swelling on the eyelid (OED n.2).