FIELD: medicine.
SUBSTANCE: method involves determining total amount of final metabolites of nitrogen oxide (NO-
2
/NO-
3
). NO-
2
/NO-
3
concentration in lacrimal fluid being found above 1.0 mcmole/l, disease development course is estimated as favorable. NO-
2
/NO-
3
concentration in lacrimal fluid being found below 1.0 mcmole/l, disease development course is estimated as unfavorable.
EFFECT: high accuracy of early stage prognosis.
