public function getLatestIOP($patient, $api = null)
{
$result = array();
$api = $api ? $api : new OphCiExamination_API();
$result['leftIOP'] = $api->getIOPReadingLeft($patient);
$result['rightIOP'] = $api->getIOPReadingRight($patient);
if ($result['leftIOP'] || $result['rightIOP']) {
return $result;
}
return;
}