public function getLetterMaxCRTForSide($patient, $side)
{
if ($episode = $patient->getEpisodeForCurrentSubspecialty()) {
if ($el = $this->getElementForLatestEventInEpisode($episode, 'models\\Element_OphCiExamination_OCT')) {
return $el->{$side . '_crt'} . 'um';
}
}
}