The inner diameter of the optic disc pit decreases with pars plana vitrectomy.

To report a patient with optic disc pit who showed decreased inner diameter of the optic disc pit along with resolution of recurrent macular detachment after pars plana vitrectomy. Pneumatic retinopexy and peripapillary laser photocoagulation was performed in a 28-year-old female with optic disc pit and serous macular detachment. Two months after the initial therapy, serous macular detachment recurred. Then, pars plana vitrectomy with removal of the posterior hyaloid was performed, and intraocular perfluoro-octane (C3F8) tamponade was used. Fundus photography and ocular coherence tomography were obtained at each visit. The patient was followed up for 1 year. Visual acuity was 20/400 (Snellen) at first presentation, improved to 20/40 at 2 weeks after pneumatic retinopexy and peripapillary laser treatment. Then, 2 months later visual acuity decreased to 20/200, improved to 20/40 at 2 weeks after the vitreoretinal surgery, and stayed stable during the 1-year follow-up. It was also noticed on clinical examinations as well as fundus photographs that the inner diameter of the optic disc pit had decreased significantly. Vitreous traction plays an important role in the formation of serous macular detachments with optic disc pits. In these patients, pars plana vitrectomy and posterior hyaloid removal may be an effective treatment for reduction of the inner diameter of the optic pit and resolution of the serous macular detachments.