This section in the ICD-10 classification system encompasses conditions that impact the eyes and their associated structures (adnexa). It includes a wide range of conditions such as cataracts (clouding of the lens), glaucoma (damage to the optic nerve usually due to high pressure), macular degeneration (loss of central vision), and conjunctivitis (inflammation or infection of the outer membrane of the eyeball and the inner eyelid), among others. Symptoms can vary, including vision changes, pain, or redness, depending on the specific disease. Treatments can range from eye drops and glasses or contact lenses to surgical interventions. Understanding this chapter is key to diagnosing, treating, and understanding the prevalence of eye and adnexa diseases, with the aim of preserving and enhancing vision health. Read more in the help section