I have no clue but I would like to know the same.

It means being real ugly and downright ratcheted.

A ratchet is a mechanical device that can rotate back and forth with the action of a cam or ball. This is much used in wrenches, jacks, come-alongs etc.

It depends on what type of strapping is used. Some straps are just pulled by hand to take out all the slack, others need tools or ratcheted tight to work.

An examination of the eye using a "slit lamp"--an intensely bright lamp shielded by a shade with a slit it it--reveals undulating, irregular, worm-like movements with a segmented or ratcheted appearance in the iris of the affected eye