Table 5

Finger classification of radiation retinopathy

Stage	Sign	Symptom	Location	Best viewed by	Risk of vision loss
DA, disc areas.
Vision loss must be related to associated sign(s).
1	Cottonwool spots	None	Extramacular	Ophthalmoscopy	Mild
	Retinal haemorrhages	None	Extramacular	Ophthalmoscopy	Mild
	Retinal micro-aneurysms	None	Extramacular	Ophthalmoscopy	Mild
	Ghost vessels	None	Extramacular	Ophthalmoscopy	Mild
	Exudate	None	Extramacular	Ophthalmoscopy	Mild
	Uveal effusion	None	Extramacular	Ophthalmoscopy	Mild
	Chorioretinal atrophy	None	Extramacular	Ophthalmoscopy	Mild
	Choroidopathy	None	Extramacular	Angiography	Mild
	Retinal ischaemia (<5 DA)	None	Extramacular	Angiography	Mild
2	Above findings	None	Macular	Both	Moderate
3	Any combination of the above plus
	Retinal neovascularisation	Vision loss	Extramacular	Angiography	Severe
	Macular oedema—new onset	Vision loss	Macular	Angiography	Severe
4	Any combination of the above plus
	Vitreous haemorrhage	Vision loss	Vitreous	Ophthalmoscopy	Severe
	Retinal ischaemia (> or = 5 DA)	Vision loss	Extramacular and macular	Angiography	Severe