Abstract
Purpose :
To compare posterior vitreous detachment identification rates from slit lamp examinations vs. optical coherence tomography in patients with retinal detachment
Methods :
Data from the Primary Retinal detachment Outcomes (PRO) study was utilized to conduct secondary analysis for this retrospective cross-sectional study. Multi-cut OCT scans were reviewed to detect separation of the posterior hyaloid face from the optic nerve to grade PVD status. Statistical analysis was performed to compare OCT identified PVD with PVD identified on clinical examination. PVD identification by imaging vs. clinical exam was then analyzed for macula on RD and macula off RD subgroups.
Results :
There was statically significant (p=0.0018) difference in PVD identification rate between clinical examination and OCT imaging in patients with RD. Of 298 eyes analyzed in this study, 165 (55.36%) had PVD on clinical examination vs. 208 (69.80%) had PVD identified on OCT. A total of 63 (21.12%) were graded not to have a PVD on clinical examination vs. 45 (15.01%) were negative for PVD on OCT. There was a higher number of patients had unknown PVD status on clinical exam vs. imaging, 70 (23.50%) vs. 45 (15.01%) respectively. In patients with macula on RD 77 (55.40%) were found to have PVD on clinical examination vs. 109 (78.41%) by imaging. Similarly, OCT imaging in macula off RD patients identified larger number of PVD 97 (61.78%) compared to clinical examination 87 (55.41%).
Conclusions :
Knowledge of the posterior hyaloid position may be beneficial in determining type of surgical procedure undertaken for RD repair. OCT imaging can better identify PVD than clinical examination in patients with retinal detachment.
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.