Association of Blue-on-Yellow Visual Field with Optic Disc and Retinal Nerve Fiber Layer

Glaucoma is a progressive optic neuropathy with characteristic changes of optic nerve head (ONH), retinal nerve fiber layer (RNFL) and visual field. The anatomic loss of neural tissue goes along with deterioration of function, and any of these three may be the first to reach the threshold of clinical recognition. However, the detectable RNFL and optic disc abnormalities usually precede criteria referred to as typical glaucomatous field loss in conventional perimetry (Sommer et al. 1991; Tuulonen et al. 1993). However, over the past 10 years, there has been a large accumulation of evidence that short-wavelength automated perimetry (SWAP) or blue-on-yellow (B/Y) perimetry is superior to standard achromatic (white-on-white, W/W) automated perimetry for assessing early functional glaucomatous damage (Johnson 1996). On these bases we evaluated the relationship between quantitative ONH, semi-quantitative RNFL and B/Y visual-field test results in normal individuals and patients with glaucoma and ocular hypertension.