2nd order laboratory parameters – depending on the results of the history, physical examination and obligatory laboratory parameters – for differential diagnostic clarification.
- Eyelid margin swab for bacteriologic examination.
- “In cases of purulent inflammation of the eyelid, a swab should be made from the inflamed area by swabbing or rolling the swab over the affected upper or lower edge of the eyelid. The same should be done with a separate swab on the uninvolved eye.” [see below guideline: microbiological diagnosis of infections of the eye.]
- Impression cytology – non-invasive, simple examination method of the conjunctiva (conjunctiva) to assess morphological changes.
