Frequency-doubling perimetry (FDP) is a new, out-of-the-ordinary, visual fi
eld testing method. Its sensitivity and reliability was tested in 16 patien
ts (32 eyes) with ocular hypertension and 21 patients (37 eyes) with early
chronic glaucoma. Significant defects were found in almost 10% of hypertens
ive eyes and in 67.7% of glaucomatous eyes.
FDP is an effective and sensitive technique for glaucoma functional loss as
sessment.