Welcome to the GEO-EYE SERIES!

This series consists of 45 puzzle caches.  We incorporated various difficulty levels.  All the caches that form the PUPIL of the eye (P1 to P6) will be the harder ones.  The IRIS caches (I01 to I16) will be of intermediate difficulty, and the EYE outline (E01 to E23) will be easy ones.
And then to collect the smilies, we recommend high clearance vehicles.  Especially during the rainy season, as the roads can get very muddy.  But then again, that is part of all the fun!
Each puzzle will start with an eye fact, followed by the puzzle.  There might be clues hidden in the eye fact :-)

EYE FACT

THE SCLERA

The sclera, also known as the white of the eye, is the opaque, fibrous, protective, outer layer of the eye containing mainly collagen and some elastic fiber. In humans, the whole sclera is white, contrasting with the coloured iris, but in other mammals the visible part of the sclera matches the colour of the iris, so the white part does not normally show. In the development of the embryo, the sclera is derived from the neural crest. In children, it is thinner and shows some of the underlying pigment, appearing slightly blue. In the elderly, fatty deposits on the sclera can make it appear slightly yellow.

* The cache is not at the posted coordinates. To obtain the final coordinates, you will have to solve the puzzle*

You can validate your puzzle solution with certitude.

S26 18.647 E28 18.083