Relative hypersensitivity in healthy eye by frequency doubling perimetry in patients with severely damaged contralateral eye
- Department of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine
- Correspondence to: Naoya Fujimoto, MD, 1-8-1 Inohana, Chuoku, Chiba 260-8670, Department of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine, Chiba, Japan; fujimoto{at}ophthalm.m.chiba-u.ac.jp
- Accepted 31 October 2002
Frequency doubling technology (FDT, Humphrey-Zeiss and Welch Allyn, Dublin, CA, USA) has been developed to screen for glaucoma.1 FDT could detect abnormalities in patients with full visual fields tested by Humphrey field analyser (HFA, Humphrey-Zeiss, Dublin, CA, USA) and nerve fibre layer defects2 or normal visual fields and large disc cupping.3 Inversely, FDT did not always detect visual field loss in patients with glaucomatous visual field defects determined by HFA (Fig 1), but it was rare.4,5 That was because the ability of FDT to detect glaucomatous visual field loss was limited or for some other reasons. In this study, we presumed that patients with severe damage in one eye had relative hypersensitivity in another eye.
A 34 year old man had high intraocular pressure (29 mm Hg) and abnormal points in the right …
