public function init()
{
if ($default_instrument_id = Element_OphCiExamination_IntraocularPressure::model()->getSetting('default_instrument_id')) {
$this->instrument_id = $default_instrument_id;
}
if ($default_reading_id = Element_OphCiExamination_IntraocularPressure::model()->getSetting('default_reading_id')) {
$this->reading_id = $default_reading_id;
}
$this->reading_time = date('H:i', time());
}