The research area of retinal focuses on studying the structure and function of the retina, which is the light-sensitive tissue at the back of the eye. Research in this area often involves investigating diseases and disorders that affect the retina, such as diabetic retinopathy, age-related macular degeneration, and retinitis pigmentosa. Researchers in this field often use techniques such as optical coherence tomography, electroretinography, and fluorescent imaging to study the retina and develop new treatments and therapies for retinal diseases.