What does PTR stand for?
PTR stands for "Photo Thermo Refractive"
How to abbreviate "Photo Thermo Refractive"?
"Photo Thermo Refractive" can be abbreviated as PTR
What is the meaning of PTR abbreviation?
The meaning of PTR abbreviation is "Photo Thermo Refractive"
What does PTR mean?
PTR as abbreviation means "Photo Thermo Refractive"
