Effects of a New Eyelid Shampoo on Lid Hygiene and Eyelash Length in Patients with Meibomian Gland Dysfunction: A Comparative Open Study

Table 5

Grading scales for signs of meibomian gland dysfunction.

Eyelash contamination
0	Clear
1	Slight contamination
2	Mild
3	Moderate
4	Severe
Meibomian orifice obstruction
0	Clear liquid
1	Yellowish liquid
2	Opaque and toothpaste-like consistency
3	Thickened white material
4	Not possible
Meibomian gland blockage
0	None
1	<25% blocked glands
2	25% to <50%
3	50% to <75%
4	75% or more
Lid margin foam
0	Clear
1	At the canthus
2	Lower or upper
3	Lower and upper
4	Lower and upper or at the canthus