Table 1.

Mean Fluorescence Lifetimes (τ_m) for RPE and Sub-RPE Deposits in Fresh Frozen and Fixed Tissue

	Fresh Frozen	Fixed	P Value
RPE SSC	176 ± 22	178 ± 28	0.467
RPE LSC	289 ± 27	283 ± 35	0.154
Sub-RPE deposits SSC	572 ± 140	589 ± 184	0.46
Sub-RPE deposits LSC	540 ± 110	542 ± 139	0.91

Values are mean ± standard deviation. fresh frozen samples N = 117 for RPE and 98 for sub-RPE deposits, fixed samples n = 124 for RPE and 98 for sub-RPE deposits, results for the short- (SSC) and long-wavelength spectral channel (LSC) are given, statistic by unpaired Student t test.