Table 2 of Versura, Mol Vis 2013; 19:1247-1257.

Table 2. DE severity grade according to DEWS guidelines modified by Asbell and Lemp [11].

Variables 1 Severity grade 4
2 3
Symptoms-OSDI score 12–15 16–30 31–45 >45
TFBUT, sec 8–15 <10 <5 immediate
Schirmer test, mm /5 min <10–15 <10 <5 <2
Corneal staining, NEI scale 0–15 0–3 1–8 9–14 14–15
Conjunctival staining, NEI scale, 0–18 0–3 1–7 8–14 15–18
Number of patients 55 105

Description of the severity grades is as follows: mild dry eye disease (DEWS severity 1 and 2), moderate-severe dry eye disease (DEWS severity 3 and 4). Clinicians classified patients of the present study as grade 1 (n=55) or grade 2 (n=105).

Versura, Mol Vis 2013; 19:1247-1257. http://www.molvis.org/molvis/v19/1247

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