Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 10/22/2025

Age-Related Etiologies of Vitreous Hemorrhage

Adult Population (Ages 18-65)

Middle-Aged Adults (40-65 Years)

  • Posterior vitreous detachment (PVD) becomes the dominant mechanism in this age group, typically occurring between ages 45-65, with 8-22% of patients with acute PVD symptoms having a retinal tear at initial examination, according to the American Academy of Ophthalmology 2, 3, 4
  • Two-thirds of patients presenting with PVD-associated vitreous hemorrhage have at least one retinal break, with approximately 88% of breaks occurring in the superior quadrants, as reported by the American Academy of Ophthalmology 2

Diabetic Retinopathy in Adults Over 40

  • Proliferative diabetic retinopathy affects 28.5-40.3% of diabetic patients over age 40, representing the general population prevalence of 3.4% for diabetic retinopathy in those over 40, according to the American Diabetes Association 1
  • Hispanic populations show higher rates (46.9% in diabetic patients over 40) of proliferative diabetic retinopathy, as reported by the American Diabetes Association 1

Factors Accelerating PVD Onset

  • Myopia causes earlier PVD onset regardless of age, according to the American Academy of Ophthalmology 2, 3, 4
  • Trauma precipitates PVD at younger ages than typical, as reported by the American Academy of Ophthalmology 2, 5
  • Ophthalmic surgical procedures (cataract surgery, intravitreal injections) can trigger PVD, according to the American Academy of Ophthalmology 2, 6, 5

Gender Differences

  • PVD occurs earlier in men than women across all age groups, as reported by the American Academy of Ophthalmology 3, 4

Long-Term Follow-Up

  • Between 5-14% of patients with initial retinal breaks develop additional breaks during long-term follow-up, emphasizing the need for continued surveillance regardless of age, according to the American Academy of Ophthalmology 3