FIGURE 21.1 Pigmentary retinopathy vessel attenuation. FIGURE 21.2 “Waxy pallor” of optic nerve in autosomal dominant retinitis pigmentosa. Note narrowed arterioles. RP may occur in isolation or as part of a multiorgan…
This chapter deals with all tissues of the injured eye, not only the retina: even if it is not initially apparent, the posterior segment is commonly injured; consequently, it is…
cGMP, cyclic guanosine monophosphate; RPGR, retinitis pigmentosa GTPase regulator; PDE, phosphodiesterase enzyme; ATP, adenosine triphosphate. Presenting symptoms of cone–rod dystrophy include decreased central vision, dyschromatopsia, and light sensitivity (10). Patients…
FIGURE 46.1 Skin of the area of the target vein is held taut as the tip of the IV cannula enters the skin 1 to 2 mm away from the target…
FIGURE 10.1 Full-field ERG. A: ERG response to a brief (<3 ms), blue (470 nm) flash recorded from a normal dark-adapted adult subject. B: Solid lines show the first 40 ms…
FIGURE 53.1 Persistent anterior TVL vessels. These vessels are persistent and not newly developed, and therefore are best referred to as rubeosis iridis. FIGURE 53.2 Vessels extending from the lens surface to…
On the other hand, delayed surgical intervention in these children may lead to permanent structural damage to the eye, causing irreversible macular pathology and optic nerve pathology that will limit…
FIGURE 9.1 A:Visual pathways. The retinocortical pathway transfers information through the lateral geniculate body (LGN) to the primary visual cortex and through the tectal pathway via the superior colliculus (SC) to…
FIGURE 26.1 A: Hematoxylin- and eosin-stained section from an RB specimen. Region of viable tumor cells demonstrating rosette formation. A prominent Flexner-Wintersteiner rosette is indicated (arrow). A tumor vascular complex is…
