VII: Diseases of the eye and adnexa

H30-H36: Disorders of choroid and retina

Disorders of the choroid and retina are a group of conditions that impact the back of the eye. The choroid is a delicate, thin tissue filled with blood vessels that supplies the retina with nutrients and oxygen. The retina is a layer of tissue that allows us to see by sensing light and color and sending visual signals to the brain. When these two parts of the eye are affected by disorders, vision can be dramatically impacted. These conditions can be caused by a variety of factors, including genetics, aging, exposure to sunlight, blood pressure problems, and certain diseases like diabetes. Symptoms can range from slight visual disturbances to major vision loss and blindness. Early stages may not show signs, but as the conditions progress, individuals might experience blurry or distorted vision, a decrease in color perception, and dark or empty areas in their visual field. These disorders often worsen over time and can affect one or both eyes.