Table 2. Quantitative measurements of key features during OFC progression using flat mounted WT and mem-GFP fissures.

Total OFM length includes optic nerve and pecten. * Fused fissures observed were too small to measure accurately (<0.1 mm).

HH stage	Mean total OFM length (mm)	± SD	Mean length of fused seam (mm)	± SD
27	2.20	0.15	-	-
28	2.92	0.33	*	*
29	3.58	0.28	0.56	0.12
30	4.38	0.17	0.93	0.09
31	4.50	0.25	1.09	0.13
32	4.77	0.16	1.15	0.10
33	5.31	0.23	1.39	0.10
34	5.67	0.16	1.70	0.07