👉 The term "choroidal" refers to a type of retinal pigment epithelium (RPE) that is located in the central portion of the retina, including the macula and the choroid. The RPE plays an important role in maintaining vision by absorbing light and transmitting visual information from the eye's sensory receptors to the brain. Choroidal cells are characterized by their ability to form a network of interconnected filaments, which helps to transmit signals between the RPE cells and other parts