. Author manuscript; available in PMC: 2010 Apr 8.

Published in final edited form as: Ophthalmology. 2009 Jan 22;116(3):504–512. doi: 10.1016/j.ophtha.2008.10.017

Table 4.

E-ETDRS Visual Acuity Letter Score and OCT-Measured Center Point Thickness by Categories

E-ETDRS visual Acuity Letter Score	OCT-Measured Center Point Thick ness (microns)
	CRVO (% of row total)			Total CRVO	BRVO (% of row total)			Total BRVO
	≤325	326–725	>725	Total CRVO	≤325	326–725	>725	Total BRVO
59–73 (20/40–20/63)	12%	64%	24%	99	16%	78%	7%	212
49–58 (20/80–20/100)	4%	57%	39%	56	7%	81%	11%	96
19–48 (20/125–20/400)	7%	47%	47%	107	5%	65%	29%	95
Total	8%	55%	37%	262	11%	76%	13%	403

DRS = electronic Early Treatment Diabetic Retinopathy Study; OCT = optical coherence tomography; CRVO = central retinal vein occlusion; BRVO = branch retinal vein occlusion.