Hemifield pattern electroretinogram, frequency doubling technology and optical coherence tomography for detection of early glaucomatous optic neuropathy in ocular hypertensive patients

Purpose To assess which is the most sensitive and specific exam for detecting early glaucomatous damage in ocular hypertensive patients (OH) among hemifield test pattern electroretinogram (PERG HF), frequency doubling technology (FDT) and optical coherence tomography retinal nerve fiber layer (OCT RNFL). Methods Fifty-two OH patients (mean age of 56±9.6 yrs) with an intraocular pressure (IOP)>21mmHg and 52 healthy controls (mean age of 54.8±10.4 yrs) with IOP