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Acanfora F., La Rocca V.
Aim. Proliferative vitreoretinopathy (PVR), a complication of regmatogenous detached retina (DR), is the prime cause of the failure of surgery in retina detachment carried out with the traditional technique. The purpose of the present paper is to assess the clinical and surgical risk factors involved in the development of PVR.
Methods. The present paper is a retrospective study carried out on 323 consecutive cases of DR operated on with the traditional technique from 1988 to 1996 at the Eye Clinic of Naples University (Federico II). The following parameters were considered in the assessment: age, sex, ametropia, retinal rupture characteristics (type, extent and site), clinical characteristics of DR, state of the macula, state of the vitreal gel and surgical parameters.
Results. Of the 323 patients operated on with ab externo tecnique, 27 developed PVR at varying times after the operation (average 3 months). Six patients presented grade C1 PRV; 8 grade C2 PVR, 6 grade D1 PRV, 4 grade D2 PVR, and 3 grade D3 PVR. Of the 27 patients who had developed DR, 6 presented total DR, 3 a DR involving 1 sector, 11 presented a DR involving 2 sectors and 7 a DR involving 3 sectors. The data presented show that the greader the extent of the retina detachment, the higher the incidence of PVR.
Conclusion. In our retrospective study we observed that the incidence of postoperative PVR was particularly associated with DR with horseshoe laceration of various extent; this finding is valid in particular for those patients suffering from giant laceration and horseshoe lacerations in more than 1 sector.