Parental Awareness of the Preschool Orthoptics Visual Screening in Brunei-Muara District and Factors Contributing to Defaulters.

Background: The preschool orthoptics visual screening program began in Brunei Darussalam in 2004 to detect amblyopia, a common cause of treatable visual disorders in children. Amblyopia can be asymptomatic, easily missed, and cause permanent adverse visual consequences; hence, it is necessary to be screened. The parental role in ensuring timely visual screening is pivotal to their child's visual well-being and educational success.

Insights for mfVEPs from perimetry using large spatial frequency-doubling and near frequency-doubling stimuli in glaucoma.

Purpose: To compare two forms of perimetry that use large contrast-modulated grating stimuli in terms of: their relative diagnostic power, their independent diagnostic information about glaucoma and their utility for mfVEPs. We evaluated a contrast-threshold mfVEP in normal controls using the same stimuli as one of the tests.

Methods: We measured psychophysical contrast thresholds in one eye of 16 control subjects and 19 patients aged 67.

Visual evoked potential and psychophysical contrast thresholds in glaucoma.

Purpose: We compared the diagnostic power of electrophysiologically and psychophysically measured contrast thresholds for the diagnosis of glaucoma. Additionally, we investigated whether combining results from the two methods improved diagnostic power.

Methods: Seven-eight subjects between 40 and 88 years formed the main study group: 21 normal controls (9 males) and 57 glaucoma patients (30 males) were tested.