You are my Destiny- the FL was blind but gets a transplant. The drama's not that great and is 178 episodes.
Faith- the FL is constantly in danger and needs the ML to save her.
The Masked Lover- the FL has to pretend to be her twin who is a mafia boss, so she's in constant danger.
Khun Mae Suam Roy- FL's twin sister is disabled and in a wheelchair, FL pretends to be her so she can find out who tried to kill her sister. The person who tried to kill her sister might be trying to kill her too.
The Princess Wei Young - the FL's life is constantly in danger (escaping the politically-motivated murder of her family, fire, deadly poison, multiple death sentences, being held hostage, withstanding a military siege, etc. --- some of these are just bad luck, the rest are risks that come up due to her hidden identity / efforts to seek revenge, political intrigue, romantic rivals, and spurned romantic interests)
Mr. Sunshine - the FL is a secret rebel agent and her life is constantly in danger
Hi! School - Love On - constantly in danger of being erased from existence