Posterior vitreous detachment
Posterior Vitreous Detachment[edit | edit source]
Introduction[edit | edit source]
Posterior Vitreous Detachment (PVD) is an eye condition where the vitreous membrane separates from the retina. It primarily occurs as a natural part of aging.
Pathophysiology[edit | edit source]
PVD involves the separation of the posterior hyaloid membrane from the retina posterior to the vitreous base, a 3-4 mm attachment to the ora serrata. The process is often due to changes in the vitreous humor consistency and volume with age.
Epidemiology[edit | edit source]
- Prevalence in Older Adults
Over 75% of individuals over the age of 65 experience PVD. The condition becomes increasingly common with advancing age.
- Occurrence in Middle-Aged Individuals
While less frequent in people in their 40s and 50s, PVD is not uncommon in this age group.
- Gender Differences
Some studies indicate a higher prevalence of PVD in women compared to men.
Clinical Features[edit | edit source]
Symptoms of PVD can include:
- Floaters
- Flashes of light
- A ring-shaped floater, indicative of a Weiss ring
Diagnosis[edit | edit source]
Diagnosis of PVD is primarily based on patient history and a comprehensive eye examination, including:
- Ophthalmoscopy
- Slit lamp examination
- OCT scans in some cases
Management and Prognosis[edit | edit source]
Most cases of PVD are benign and do not require treatment. However, patients should be monitored for complications like:
Patient Education[edit | edit source]
Patients with PVD should be educated about symptoms of retinal detachment and the importance of timely ophthalmologic evaluation if these symptoms occur.
References[edit | edit source]
- Johnson, M. W. (2010). Posterior vitreous detachment: Evolution and complications of its early stages. American Journal of Ophthalmology, 149(3), 371-382.
- Hikichi, T., Yoshida, A., & Akiba, J. (1995). Rate of posterior vitreous detachment in women with idiopathic macular hole. Archives of Ophthalmology, 113(6), 724-728.
See Also[edit | edit source]
| Posterior vitreous detachment Resources | |
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