A third benefit is the increased sensitivity to weak reflections that results from the larger pupil afforded by AO and that captures more of the retinal reflectance. Examples include the bundles within the RNFL; retinal microvasculature such as the capillaries that form the rim of the foveal avacular zone (FAZ); microstructures in the ganglion cell layer and Henle's fiber layer; the 3D photoreceptor mosaic; retinal pigment epithelium; and the tiny pores of the lamina cribrosa of the optical nerve. AO is being used for studying a number of clinical conditions, including ARMD, hereditary retinal dystrophies, retinopathy of prematurity,26 and optic neuropathies.27, 28.Thursday over the Minnesota Bluegrass OldTime Music Festival at El Rancho Maana near Richmond, according to the Stearns County Sheriff's Office. The pilot, a 28yearold man from Biwabik, Minn., was arrested upon landing at a campground north of the stage. Festival executive director Jed Malischke was on the scene and said