Retinal and vitreous conditions can arise from a variety of factors, including age-related changes, trauma, and underlying systemic diseases. Common causes include age-related macular degeneration, diabetic retinopathy, retinal detachment, and vitreous hemorrhage. Other contributing factors might include high myopia, inflammatory diseases, and conditions affecting blood vessels, such as hypertension or diabetes. Additionally, certain genetic predispositions can increase the risk of developing these conditions.