title: Visual field protective effect of Erigeron breviscapus (vant.) Hand. Mazz. extract on glaucoma with controlled intraocular pressure: a randomized, double-blind, clinical trial.
abstract: OBJECTIVE
  To evaluate the visual field protective effect of Erigeron breviscapus (vant.) Hand. Mazz. (EBHM) extract on glaucoma with controlled intraocular pressure (IOP).
  
  
  METHODS
  Forty patients (40 eyes) with primary open-angle glaucoma, visual field defects and a postsurgical IOP of <18 mmHg were enrolled. The EBHM and placebo tablets were given orally according to the randomized and double-blind principle. Two tablets (of either EBHM or placebo) were taken three times a day for a period of 6 months. Patients were examined every 2 months after treatment commenced. At the end of the study, the results were given to the drug manufacturer.
  
  
  RESULTS
  All patients completed the prospective, randomized, double-blind, clinical trial. No obvious adverse effects were found in patients during the treatment period. In the placebo group, no significant difference was found in mean defect (MD) or mean sensitivity (MS) between the values at pre-treatment and after 2, 4, and 6 months of treatment. After 6 months of EBHM treatment, the MD was significantly decreased and the MS was significantly increased compared with pre-treatment (p < 0.05). In the patients with moderate and late glaucoma, the MD was significantly decreased and the MS was significantly increased after 2, 4, and 6 months of EBHM treatment compared with pre-treatment.
  
  
  CONCLUSIONS
  EBHM extract may have a partial protective effect on the visual field of glaucoma patients with controlled IOP. Further studies are needed to determine the safety and effectiveness of long-term EBHM treatment.
authors.affiliation: Department of Ophthalmology, Ruijin Hospital Affiliated Medical School, Shanghai Jiaotong University, Shanghai, China. yszhong68@yahoo.com.cn
authors.forename: Yisheng
authors.initials: Y
authors.lastname: Zhong
authors.forename: Minhong
authors.initials: M
authors.lastname: Xiang
authors.forename: Wen
authors.initials: W
authors.lastname: Ye
authors.forename: Yu
authors.initials: Y
authors.lastname: Cheng
authors.forename: Youqin
authors.initials: Y
authors.lastname: Jiang
mesh_terms: D000284:Administration, Oral; D000368:Aged; D004311:Double-Blind Method; D049919:Erigeron / Q000737:chemistry*; D005260:Female; D005500:Follow-Up Studies; D005902:Glaucoma, Open-Angle / Q000188:drug therapy* / Q000503:physiopathology; D006801:Humans; D007429:Intraocular Pressure / Q000187:drug effects; D008297:Male; D008875:Middle Aged; D008517:Phytotherapy / Q000379:methods; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology*; D011446:Prospective Studies; D013607:Tablets; D013997:Time Factors; D016896:Treatment Outcome; D014794:Visual Fields / Q000187:drug effects*
chemical_list: D010936:Plant Extracts; D013607:Tablets