
YOUR RETINA CAN FALL OFF?????
WHAT THE FUCK

Not exactly, but it can tear leading to floaters and curtain vision. It could be due to a sudden increase of intraocular pressure such as trauma, glaucoma, high blood pressure , etc,
As the manga said the easiest method is photocoagulation (laser) where they burn the tissue to prevent the actual detachment,
If detected early it can easily be repaired, but if neglected it could lead to permanent vision loss of the affected eye

Glasses are definitely better since they are at lower risk to cause damage to the cornea.
Also , by using glasses you can eventually consider lasik as an option
Contacts leave scratches on the corneal surface which would not be ideal for a patient
Also, high risk for bacterial contamination.
As for glasses getting lost. Have you considered magnetic types that you can hang around the neck? They work great and are quite cheap online, just need to replace the lenses to your specific grade
They snap close at the nose-bridge area
im so sorry i cant stop thinking ab how his fangs are connected to his lips on this page
http://www.mangago.zone/read-manga/fangs/uu/mpn_chapter-2349942/21/
Omg looks silly