AIM:To report the surgical results of modified viscocanalostomy for patients with primary juvenile open angle glaucoma (JOAG). METHODS:The medical records of 27 patients (totally 43 eyes) with JOAG were reviewed to learn the results of modified viscocanalostomy for their glaucoma. Gender, age at initial modified viscocanalostomy, family history, corrected visual acuity, glaucoma medication used, surgical outcome duration of postoperative observation, preoperative and postoperative intraocular pressures (IOP) were reviewed. Complete success was defined as an IOP≤21mmHg, qualified success as IOP≤21mmHg with use of glaucoma medications, and failure as IOP >21mmHg despite medical therapy. The surgical technique used to perform the modified viscocanalostomy procedures was reviewed and the absence of significant complications noted. RESULTS:Complete success was achieved in 74% of the eyes over the two years follow-up period .Mean initial measures of IOP were 35.38±7.15mmHg. On the 24 months follow-up visit, the IOP was 16.50±2.52mmHg.The reduction of IOP was 18.88mmHg (P<0.01). No significant surgical complications occurred intraoperatively and posteperatively. CONCLUSION:Modified viscocanalostomy is a potentially effective initial surgical treatment of JOAG with a higher long-term success rate and fewer risks of postoperative complications.