title: Long-term trends in intraocular pressure after combined vitrectomy with sub-tenon injection of triamcinolone acetonide.
abstract: OBJECTIVE
  To evaluate the long-term effect of vitrectomy by itself and combined vitrectomy with sub-Tenon injection of triamcinolone acetonide (TA) on intraocular pressure (IOP).
  
  
  METHODS
  In a retrospective cohort study, the medical records of 56 eyes of 56 patients who underwent nonemergent vitrectomy and were followed up for at least 24 months were reviewed. Thirty-two eyes of 32 patients underwent combined vitrectomy with sub-Tenon injection of TA. Twenty-four eyes of 24 patients underwent vitrectomy only. Increased IOP of >4 mmHg from the baseline, change in IOP from the baseline, and preoperative and postoperative measured IOPs were recorded and compared between the two groups, and with fellow eyes.
  
  
  RESULTS
  Minimum follow-up period was 24 months. Except the IOP at postoperative 1 day, there were no significant differences between vitrectomized eyes and nonvitrectomized fellow eyes. There were also no differences between vitrectomized eyes and eyes that underwent combined vitrectomy with sub-Tenon injection of TA. And in the comparison of the vitrectomy-only eye group and the vitrectomy with sub-Tenon TA eye group, there was also no significant difference during the whole follow-up period.
  
  
  CONCLUSIONS
  Vitrectomy by itself or combined vitrectomy with sub-Tenon injection of TA does not seem to increase IOP in the long term.
authors.affiliation: Department of Ophthalmology and Visual Science, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
authors.forename: So-Yoon
authors.initials: SY
authors.lastname: Kim
authors.forename: Jeong Ah
authors.initials: JA
authors.lastname: Shin
authors.forename: Hae-Ri
authors.initials: HR
authors.lastname: Yum
authors.forename: Jae Hyung
authors.initials: JH
authors.lastname: Han
authors.forename: Ji-Wook
authors.initials: JW
authors.lastname: Yang
authors.forename: Young-Hoon
authors.initials: YH
authors.lastname: Park
mesh_terms: D000368:Aged; D003131:Combined Modality Therapy; D005260:Female; D005500:Follow-Up Studies; D005938:Glucocorticoids / Q000627:therapeutic use*; D006801:Humans; D056965:Injections, Intraocular; D007429:Intraocular Pressure / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D012164:Retinal Diseases / Q000601:surgery; D012189:Retrospective Studies; D058475:Tenon Capsule / Q000187:drug effects*; D014065:Tonometry, Ocular; D014222:Triamcinolone Acetonide / Q000627:therapeutic use*; D014821:Vitrectomy; D014823:Vitreous Hemorrhage / Q000601:surgery
chemical_list: D005938:Glucocorticoids; D014222:Triamcinolone Acetonide