Table 3. Statistics of the optical absorption spectral parameters derived with 3^rd order polynomial.

	Retinoblastoma		Uveal melanoma		p-values in two-tailed t-test
	Mean	Standard deviation	Mean	Standard deviation
a3	38	192	-29	149	0.57
b3	-0.11	0.69	0.11	0.55	0.63
c3	9.3×10−5	8.2×10−4	1.2×10−4	6.8×10−4	0.68
d3	-3.1×10−8	3.2×10−7	4.4×10−8	2.8×10−7	0.72