Table 2. Comparative analysis of three purification protocols for RGCs.

Various	TIP	TIPM	FC
Yield(*104)	24.60±15.98	5.28±4.42	0.54±0.27
RGCs/retina cell (%)	5.91±3.38	1.31±0.94	0.05–0.35
Purity (%)	80.97±5.45	95.41±3.23	Controlled, up to 100
viability	+++	++	-
Longevity (days)	>20	≤9	-
operation time (hour)	3–4	2–3	3–4
stability	+	++	+++
cost	+	++	+++

+:low, ++: medium, +++:maximum -:we did not get.