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

Table 4

Specialized and nonspecialized tests for meibomian gland dysfunction, dry eye, and eyelash length.

Category	Test
Symptoms	Original questionnaires
Signs
Meibomian function	Eye lash contamination
	Meibomian gland blockage
	Eyelid margin foam
	Decreased meibum secretion
Ocular surface	Tear breakup time
	Superficial punctate keratopathy
	Lipid layer thickness
Eyelash	Length

See Table 5 for grading scales.