Prevalence Comparison of posterior vitreous detachment and its types based on patients' demographic characteristics at Razi Clinic in Birjand City

Posterior vitreous detachment (PVD) is a disorder in which, mostly following the physiological process of aging, by itself causes annoying eye symptoms.. If it is not treated early, it can lead to irreversible complications such as retinal tears and detachment. The present study was conducted to investigate the prevalence and characteristics of acute PVD and its complications.

60 patients (men and women) was selected among patients referring to Razi Ophthalmology Clinic in Birjand City. A detailed ophthalmic examination was performed including optical coherence tomography (OCT). Incomplete PVD was differentiated into stage 1 (shallow PVD with circular perifoveal vitreous attachment), stage 2 (PVD reaching fovea but not foveola), stage 3 (shallow PVD with pinpoint vitreous attachment at the foveola), and stage 4 (PVD completely detached from the macula,not attached to the optic disc).The current study includes 60 patients with a mean age of 62.42 ± 10.47 years consisting of 34 females (56.7%) and 26 (43.3%) males. Stage 1 PVD was seen in 20 (38.3%) eyes, Stage 2 PVD in 8 (11.7%) eyes, Stage 3 PVD in 14 (20%) eyes, and Stage 4 PVD in 18 (30%) eyes. Females were more likely to have complete PVD (p = 0.04). The stage of PVD after a sudden occurrence of posterior vitreous detachment can be used as a prognostic factor to predict the prognosis of acute PVD patients. Age and female gender are independently associated with complete PVD occurrence.