One possibility is the word tear.
The iris is the part of the eye that is a 4-letter word and starts with the letter "i." The iris is the colored part of the eye that surrounds the pupil and controls the amount of light entering the eye.
area
uvea
Uvea
you do not need an abbreviation for a 4 letter word, so there is no abreviation
eye, see
look is another word for eye make up or make up in general. My sister is a licensed aesthetitian in New Jersey.
Vitreous humor is the part of the eye that starts with the letter "v."
Probably whatever your doctor tells you.Usually one drop per infected eye every 4 hours.But ALWAYS discuss with your doctor first.
Envy Is A 4-Letter Word
Salt is a 4 letter word for seasoning.
4 letter word for drum is "Dhol".