[Epiretinal gliosis (macular pucker)--indications for vitrectomy in relation to the retinometer value].

The prognostic value of preoperative examination with the retinometer (Rodenstock) in cases of macular pucker with many different causes was studied on the basis of 17 cases. The authors found that the visual acuity after membrane peeling correlated with the preoperative test with the laser interference instrument in most cases. Therefore, this examination can be helpful in deciding whether or not surgery is necessary.