97th DOG Annual Meeting 1999



M. Mathieu, M. P√ľnder, L. L.Hansen, P. Janknecht

Introduction: The literature quotes different redetachment rates after silicon oil removal. We wanted to know whether this rate depends on the primary cause of the retinal detachment.

Patients and Methods: Retrospectively we evaluated the charts of 61 consecutive patients in whom silicon oil was removed between 1/95 and 2/96. Follow-up time was at least 6 months. The patients were divided into the follwing subgroups:

1. rhegmatogenous retinal detachment without preceding cataract operation,
2. diabetic retinopathy,
3. pseudophakia without posterior lens capsule defect,
4. pseudophakia with posterior lens capsule defect,
5. contusio bulbi,
6. penetrating injury,
7. giant tear.

The redetachment rates in these groups were determined and compared.

Results: The mean follow-up time was 28.7 (6-49) months. Seven patients were lost for follow up, 2 patients died.So the charts of 52 patients were enclosed in this study. Overall, the retina remained attached in 30 cases and detached again in 22 cases. In the subgroups we found the following numbers of attached/detached retinas: rhegmatogenous retinal detachment: 9/7, diabetic retinopathy: 5/5, pseudophakia without posterior capsule defect: 5/3, pseudophakia with posterior capsule defect: 4/3, contusio bulbi: 3/1, penetrating injury: 1/2, giant tear: 1/1.

Conclusion: The redetachment rate was similar in all subgroups. Therefore, the primary cause for retinal detachment does not seem to influence the rate of retinal redetachment after silicone oil removal. The global redetachment rate was 42% in our patients.

Universitäts-Augenklinik Freiburg