Comparison of Risk Factors for Bilateral and Unilateral Eye Involvement in Normal-Tension Glaucoma

Abstract

Besides being an indicator of disease severity (worse mean deviation), diabetes mellitus, previous cerebrovascular accident, and IOP were associated with bilateral eye involvement. These data suggest that systemic vascular factors and IOP play significant roles in the pathogenesis of NTG. It appears that although systemic vascular factors increase the susceptibility of the optic nerve, a certain level of pressure-induced stress is also required to cause glaucomatous optic neuropathy.