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Kuivasilmäisyyden
toteaminen käytännössä
    Osmolaarisuusmittarista apua
  kuivasilmäisyyden diagnosointiin?
Kuivasilmäisyyden mittaus
Vaihtoehdot
Vaihtoehdot
  • Schirmerin testi
  • Tear-film breakup time (TBUT)
  • Visus
  • Fluoresiiniliuska
  • Interferometria
  • Osmolaarisuus
Schirmerin testi
• Epämukava, hankala, hidas
• Epäluotettava (pseudoepiphora)
• Ei kerro lievästä silmien
  kuivuudesta
• PPV 31%

(Definition and Classification of Dry Eye. Report of the Diagnosis and Classification
Subcommittee of the Dry Eye Workshop (DEWS). The Ocular Surface 5(2): 75-92, 2007)
Tear Film Breakup Time
• Nopea, yksinkertainen
• Ei anna riittävää informaatiota
• TBUT PPV 25%
(Definition and Classification of Dry Eye. Report of the Diagnosis and Classification Subcommittee of the
Dry Eye Workshop (DEWS). The Ocular Surface 5(2): 75-92, 2007)
Fluoresiinivärjäys
• Refleksinomainen kyyneleritys
• Kyynelnesteen ominaisuudet voivat muuttua
• PPV 31 %

(Definition and Classification of Dry Eye. Report of the Diagnosis and Classification
Subcommittee of the Dry Eye Workshop (DEWS). The Ocular Surface 5(2): 75-92, 2007)

(Rose Bengal, Lissamiini)
Meniskin korkeuden arviointi
               • PPV 31 %




(Definition and Classification of Dry Eye. Report of the Diagnosis and
Classification Subcommittee of the Dry Eye Workshop (DEWS). The
Ocular Surface 5(2): 75-92, 2007)
Meniskin korkeuden arviointi
               • PPV 31 %




(Definition and Classification of Dry Eye. Report of the Diagnosis and
Classification Subcommittee of the Dry Eye Workshop (DEWS). The
Ocular Surface 5(2): 75-92, 2007)
Interferometria
•   Uusi teknologia
•   ERITTÄIN tarkka
•   Paljon dataa
•   Hintava
QuickTime™ and a
          decompressor
are needed to see this picture.




                                  9
Osmolaarisuuden mittaus
• PPV 87%, 95% sensitiivisyys vaikeassa
  kuivasilmäisyydessä
• Paras ja nopein menetelmä kyynelnesteen
  koostumuksen analysoimiseksi
• Toistettavuus, luotettavuus, analysoitavuus
• Aiemmin ongelmana on ollut hinta,
  kyynelnesteen suuri tarve ja laboratorio-
  olosuhteet.
Osmolaarisuuden mittaus
Tearlab
Osmolaarisuusmittari
Osmolaarisuusmittari
•   Kyynelnesteen tarve 50 nl
•   Luotettava tulos 30 sekunnissa
•   Pieni, edullinen laitteisto
•   Selkeä tulos, joka kertoo
    kuivasilmäisyyden laadun
    yksiselitteisesti
Tearlab platform
• Elektroninen analysaattori, joka
  kerää kyynelnesteen
  kapillaarisesti suoraan silmästä
  analysointia varten
• Hyvin toimintavarma mittaustapa
Ennustettavuus, Schirmerin testi
Ennustettavuus,
Ocular Surface Disease Index
Ocular Surface Disease Index
Ennustettavuus, fluoresiinivärjäys
Ennustettavuus, osmolaarisuus
Osmolaarisuusindeksi
Yhteenvetona
• TearLab osmolaarisuustesti on tarkin ja
  objektiivisin tapa määritellä kuivasilmäisyys
   – Mikäli > 308 mOsms/L, aihetta lisätutkimuksiin
• TearLab korreloi täysin taudin vakavuuden kanssa
• TearLab mahdollistaa potilaan tilan seurannan
• Auttaa havainnollistamaan tilanteen potilaalle


                                                      19
Ota yhteyttä
   iogen@iogen.fi
   040 52 89 866



                    20

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Tearlab - kuivasilmäisyyden kvantitatiivinen mittaus