ABSTRACT
This chapter refers to visual acuity as the size of a single bar of a minimum resolvable grating. One aspect of vision that has intrigued many investigators and that they have attempted to relate to structural properties of the eye is visual acuity, the capacity to resolve fine details. Measures of visual acuity in various animals have shown that there is a wide range of acuity capacities among different animals. One puzzling aspect of visual acuity measurements in various animals is that many animals appear to possess acuity much greater than may be guessed necessary in their natural environment. Comparisons are made between visual acuity and the actual retinal image width of a stripe that a minimal resolvable grating cast on the retina, taking into account the different eyeball sizes. One aspect of the structural organization of the retina that has not received its fair share of attention is the ganglion cell destiny of the retina.
