Valmiki Ramayana Sundara Kanda Sarga 44 Shloka 19

रावणः Ravana, जम्बुमालिं च even Jambumali, निहतम् being klled, महाबलान् of great strength, किंकरांश्च and kinkaras also, श्रुत्वा hearing, कोपसंरक्तलोचनः bloodshot eyes, चुक्रोध got enraged.

Ravana's eyes became bloodshot in anger when he heard about the death of Jambumali and of the strong army of kinkaras.