Retinal cells

Retinal cells represent the specialized neural and epithelial layers of the eye responsible for the initiation and processing of visual information (National Eye Institute [1]). This heterogeneous population includes photoreceptors (rods and cones) for light detection, interneurons (bipolar, horizontal, and amacrine cells) for signal modulation, and retinal ganglion cells that transmit visual data to the brain via the optic nerve (StatPearls [2]). The retinal pigment epithelium (RPE) provides essential metabolic support, maintains the blood-retinal barrier, and facilitates the visual cycle (NIH [1.3.1]). While these cells are the focus of treatments for blinding diseases like age-related macular degeneration and retinitis pigmentosa, "retinal cells" is a cellular/tissue designation rather than a single molecular target (NIH [1.3.2]). Pharmacological agents generally target specific receptors, enzymes, or growth factors within these cells, such as vascular endothelial growth factor (VEGF) or the RPE65 enzyme, to modulate function or survival (NIH [1.3.1]). Consequently, the term is often used in the context of cell-based therapies or as a target compartment for drug delivery systems (Frontiers in Pharmacology [1.3.5]).

Other names

RetinaRetinal tissueNeural retinaRetinal cell layerOcular retinal cells

Drugs typically target specific molecular pathways within retinal cells, such as inhibiting vascular endothelial growth factor (VEGF) to prevent neovascularization or providing gene therapy to replace defective proteins like RPE65 (NIH [1.3.1]).