Short-term intraocular pressure changes immediately after intravitreal injections of anti-vascular endothelial growth factor agents

Am J Ophthalmol. 2008 Dec;146(6):930-4.e1. doi: 10.1016/j.ajo.2008.07.007. Epub 2008 Sep 5.

Abstract

Purpose: To assess short-term trends and the need to monitor intraocular pressure (IOP) changes immediately after intravitreal injections of ranibizumab, bevacizumab, pegaptanib, and triamcinolone acetonide.

Design: Retrospective, interventional case series.

Methods: Charts of 213 consecutive injections to 120 eyes of 112 patients were reviewed. Pressures were measured before injection, immediately after injection (T0), and at five-minute intervals until IOP was less than 30 mm Hg. Optic nerve perfusion was assessed by testing for hand movement vision and by indirect ophthalmoscopic examination. Kaplan-Meier and Chi-square analyses of IOP after injections and correlation of IOP spikes to drug, needle bore size, injection volume, and history of glaucoma were performed.

Results: Mean preinjection IOP was 14 mm Hg (range, 7 to 22 mm Hg). Mean IOP at T0 was 44 mm Hg (range, 4 to 87 mm Hg). All but one eye had at least hand movement vision and a perfused optic nerve at T0. IOP was reduced to less than 30 mm Hg in 96% of injections by 15 minutes and in 100% by 30 minutes. Eyes with a history of glaucoma took longer to normalize the IOP (P = .002). Statistically significant IOP spikes were observed with a smaller needle bore size (P < .0001) and in eyes with a history of glaucoma (P = .001).

Conclusions: Elevations in IOP immediately after intravitreal injections are common, but are transient. Prolonged monitoring of IOP may not be necessary on the day of injection in most cases if hand movement vision, optic nerve perfusion, and lack of intraocular complications have been verified. However, cautious monitoring should be considered in select cases.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Angiogenesis Inhibitors / administration & dosage*
  • Antibodies, Monoclonal / administration & dosage
  • Antibodies, Monoclonal, Humanized
  • Aptamers, Nucleotide / administration & dosage
  • Bevacizumab
  • Drug Monitoring
  • Female
  • Humans
  • Injections
  • Intraocular Pressure / drug effects*
  • Male
  • Middle Aged
  • Ranibizumab
  • Retinal Diseases / drug therapy
  • Retrospective Studies
  • Time Factors
  • Tonometry, Ocular
  • Triamcinolone Acetonide / administration & dosage
  • Vascular Endothelial Growth Factor A / antagonists & inhibitors*
  • Vitreous Body

Substances

  • Angiogenesis Inhibitors
  • Antibodies, Monoclonal
  • Antibodies, Monoclonal, Humanized
  • Aptamers, Nucleotide
  • Vascular Endothelial Growth Factor A
  • pegaptanib
  • Bevacizumab
  • Triamcinolone Acetonide
  • Ranibizumab