Table 1.

Scale of severity.

Grade	Cornea signs	Conjunctiva signs	Symptoms
0	Clear	White	None
0.5	Very mild punctate keratopathy (localized fluorescein staining)	Mild bulbar redness and small tarsus papillae	Mild itchiness
1.0	Mild punctate keratopathy affecting the whole cornea	Moderate bulbar redness and moderate bulbar pappilae and/or mild Trantas nodules	Mild ichiness, burning sensation, no photophobia, normal UCVA
1.5	Moderate punctate keratopathy	Moderate bulbar redness and moderate bulbar pappilae and/or moderate Trantas nodules	No photophobia, moderate itchiness
2.0	Severe punctate keratopathy	Giant tarsal papillae and moderate bulbar redness, limbal involvement but not 360 degrees	Mild photophobia, moderate itchiness, normal UCVA
2.5	Severe punctate keratopathy with continuous epithelial defects	Giant tarsal papillae and severe bulbar redness with 360 degrees limbal involvement	Moderate photophobia, severe itchiness, fluctuation of UCVA
3.0	Shield ulcer with Severe punctate keratopathy	Cobblestone papillae with mucus, discharge and severe bulbar redness	Severe photophobia, severe itchiness, reduced UCVA