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Updated: Jan 31, 2026

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Published on: April 7, 2014
Prechoroidal Cleft in Type 3 Neovascularization: Incidence, Timing, and Its Association with Visual Outcome
Jae Hui Kim1, Young Suk Chang2, Jong Woo Kim1
1Department of Ophthalmology, Kim's Eye Hospital, Konyang University College of Medicine, Daejeon, Republic of Korea.
Purpose:
To investigate the incidence and timing of prechoroidal cleft development and its association with visual prognosis in type 3 neovascularization.
Methods:
This retrospective study included 166 eyes that were diagnosed with type 3 neovascularization. All eyes were treated with antivascular endothelial growth factor therapy. The incidence and timing of prechoroidal cleft development were evaluated. Best-corrected visual acuity (BCVA) at diagnosis and at final follow-up was compared between eyes with (cleft group) and without (no-cleft group) prechoroidal cleft. The incidence of retinal pigment epithelium (RPE) tear and subretinal hemorrhage was also compared between the two groups.
Results:
During the mean 39.7 ± 18.5 months of follow-up, prechoroidal cleft developed in 37 eyes (22.3%) at an average of 14.6 ± 10.4 months. The BCVA at final follow-up was significantly worse in the cleft group than in the no-cleft group (P=0.024), whereas the difference was not significant at diagnosis (P=0.969). The incidence of RPE tear (P=0.002) and subretinal hemorrhage (P < 0.001) was significantly higher in the cleft group.
Conclusions:
Prechoroidal cleft is a frequently observed finding during the treatment course of type 3 neovascularization. Eyes with prechoroidal cleft are at high risk of RPE tear or subretinal hemorrhage and subsequently associated with poor prognosis.
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