Aggregations of retinal pigment epithelial cells on inferior retinal blood vessels, a clinical sign of early proliferative vitreoretinopathy
Article first published online: 13 NOV 2008
© 2008 The Authors. Journal compilation © 2008 Royal Australian and New Zealand College of Ophthalmologists
Clinical & Experimental Ophthalmology
Volume 36, Issue 8, pages 744–747, November 2008
How to Cite
Williamson, T. H., Laidlaw, D. A. H. and Doyle, E. (2008), Aggregations of retinal pigment epithelial cells on inferior retinal blood vessels, a clinical sign of early proliferative vitreoretinopathy. Clinical & Experimental Ophthalmology, 36: 744–747. doi: 10.1111/j.1442-9071.2008.01897.x
- Issue published online: 29 DEC 2008
- Article first published online: 13 NOV 2008
- Received 22 March 2008; accepted 14 October 2008.
- retinal detachment;
- retinal pigment;
- rhegmatogenous retinal detachments;
Purpose: To determine the relationship between ‘pigment clusters’ on blood vessels (BvRPE) on the inferior retina in patients with rhegmatogenous retinal detachment, and existing proliferative vitreoretinopathy (PVR).
Methods: A prospective observational non-comparative study of consecutive patients presenting with rhegmatogenous retinal detachment to a tertiary referral university department was performed. The retina was inspected preoperatively for the detection of BvRPE. A relationship with existing PVR was determined.
Results: A total of 103 patients were recruited, 70 men and 32 women, mean age 56.7 years, with 57 left eyes. Mean duration of follow up was 9.2 months. Nineteen patients (18.4%) had BvRPE, and 20 had RPE clusters off blood vessels (nine had both). In those with the sign of BvRPE the mean number of RPE clusters on blood vessels was 5.7 (SD 5.8). The mean number of clock hours affected was 2.32 (SD = 1.58). Eight had B grade PVR and three C grade PVR. Patients with BvRPE were more likely to have PVR grades B or C than those without the sign (P = 0.002). The mean number of operations in those with the sign was 1.32 (SD = 0.58) and was statistically similar to those without BvRPE. Visual outcome was statistically similar in those with and without the sign.
Conclusion: Patients with rhegmatogenous retinal detachment may demonstrate ‘pigment clusters’ on blood vessels in the inferior retina (BvRPE). This is likely to be a specific feature found in PVR and an early sign of activation of retinal pigment epithelial cells.