Meanings

firstly vision, secondly footwork, thirdly courage, fourthly technique (the most important aspects of kendo)

regular square mesh pattern

axial length (of the eye)

geometrical axis (of the eye)

ocular micrometer

to (be able to) read between the lines

to (be able to) read between the lines

ruptured eye

digital single-lens reflex camera

mirrorless camera

cyclopia

insight

four-eyes

one-eyed hero

ophthalmology

blinkers (horse tack)

blinkers (horse tack)

blonde hair and blue eyes

aqueous humor

to fasten one's eye on (a person)