Clinical Features and Systemic Background of Low-Tension Glaucoma

Low-tension glaucoma (LTG) is defined as a disease characterized by glaucomatous disc and visual field changes with intraocular pressure (IOP) constantly below 21 mmHg. Despite the above definition LTG does not always refer to a single clinical entity, but encompasses various etiologic disorders with unknown causes [7]. The pathogenesis of LTG is poorly understood, however, discrimination of cases may be possible from their clinical course; namely, progressive and stationary [5].