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. Author manuscript; available in PMC: 2022 Jul 1.
Published in final edited form as: Ocul Surf. 2021 May 16;21:134–144. doi: 10.1016/j.jtos.2021.05.003

Table 2:

Mandell slit lamp classification system

Classification Grade
A None 0
B Mild conjunctival hyperaemia
a) palpebral 1.1
b) palpebral and/or bulbar 1.2
C Mild circumcorneal injection 1.3
D Moderate conjunctival hyperaemia
a) palpebral 2.1
b) palpebral and/or bulbar 2.2
E Moderate circumcorneal injection 2.3
F Severe conjunctival hyperaemia
a) palpebral 3.1
b) palpebral and/or bulbar 3.2
G Severe circumcorneal injection 3.3
H Other. (Grade by severity as either 1.9, 2.9, 3.9, 4.9)