Table 1.

Mean diffusion times and calculated diffusion coefficients for Alexa 488.

Sample	Diffusion time (μseconds)	Diffusion coefficient (m2/second)
Alexa 488 in PBS	32.5 ± 0.2	3.0 × 10−10
Alexa 488 in BSS	30.9 ± 0.1	3.1 × 10−10
Alexa 488 in liquid vitreous	29.4 ± 0.3	3.3 × 10−10
Alexa 488 in gel vitreous	31.0 ± 1.0	3.1 × 10−10

BSS, balanced salt solution; PBS, phosphate–buffered saline.