Fig. 1.

Photo taken during analysis. Yellow boxes identify capillaries crossing six parallel lines. The number besides each box represents capillary flow velocity category. Vessels larger than 20 μm are not included in the analyses. Black dots (*) seen in both frames are melanin aggregates. A: Frame from limbus. Avascular cornea seen in the upper left corner. B: Frame from bulbar conjunctiva. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)