Evaluating Eye Drop Instillation Technique and Its Determinants in Glaucoma Patients

Table 1

Scheme used to grade eye drop instillation technique.

Description of technique	Score
Good technique, on target, and no contamination	5
Awkward technique, on target, and no contamination	4
On target but contaminates by touching the bottle tip to the lashes or lid	3
On target but contaminates by touching the bottle tip to bulbar conjunctiva or cornea	2
Not on target, and no contamination	1
Not on target and contaminates the bottle tip by touching the eye, eyelid, or lashes	0

On target: delivered the eye drop to the eye or conjunctiva sac; Added risk of trauma to ocular surface.