title: [Tyndallometry with the laser flare cell meter and biochemical protein determination in the aqueous humor of eyes with pseudoexfoliation syndrome].
abstract: Slit-lamp examination and flare measurement in eyes with pseudoexfoliation (PSX) syndrome frequently reveal signs of impairment of the blood-aqueous barrier. We studied both aqueous flare and aqueous protein concentration in PSX eyes to verify and quantify these alterations.
  
  
  METHODS
  Aqueous flare was measured using the Laser Flare-Cell Meter Kowa FC-1000 in 158 normal control eyes (age 56.0 +/- 12.0 years), in 60 PSX eyes (age 72.5 +/- 9.4 years), and in 84 eyes with primary chronic open-angle glaucoma (PCOAG) (age 56.3 +/- 12.4 years). Total aqueous protein concentration was determined biochemically in 12 "normal" control eyes with senile cataracts (age 57.6 +/- 20.4 years), in 27 PSX eyes (age 72.6 +/- 9.1 years), and in 25 PCOAG eyes (age 63.3 +/- 13.5 years). After the primary aqueous humor was aspirated during cataract extraction or trabeculectomy, a modified BCA-Peirce method was employed.
  
  
  RESULTS
  In PSX eyes, both aqueous flare (12.3 +/- 8.2 photon counts/ms) and aqueous protein concentration (0.42 +/- 0.16 mg/ml total protein) were significantly increased in comparison with normal control eyes (4.3 +/- 1.1 photon counts/ms and 0.22 +/- 0.08 mg/ml) and with PCOAG eyes (4.7 +/- 1.6 photon counts/ms and 0.26 +/- 0.09 mg/ml) (P < 0.0001). Differences between normal control eyes and PCOAG eyes were not significant (P > 0.05). There was a high correlation between aqueous flare measurements and aqueous protein concentration in eyes with PSX (y = 0.27x + 0.29, r = 0.65, P = 0.0006, n = 24).
  
  
  CONCLUSIONS
  Our results indicate that impairment of the blood-aqueous barrier with an increase in aqueous protein concentration is a feature of PSX and may be quantified both by flare measurement and biochemical protein determination. These alterations should be considered in the pharmacological and surgical treatment of PSX eyes.
authors: Augenklinik mit Poliklinik, Universität Erlangen-Nürnberg.
authors: M
authors: M
authors: Küchle
authors: N X
authors: NX
authors: Nguyen
authors: E
authors: E
authors: Hannappel
authors: W
authors: W
authors: Beck
authors: S T
authors: ST
authors: Ho
authors: G O
authors: GO
authors: Naumann
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001082:Aqueous Humor / Q000502:physiology*; D001813:Blood-Retinal Barrier / Q000502:physiology; D002386:Cataract / Q000175:diagnosis / Q000503:physiopathology; D002387:Cataract Extraction; D017889:Exfoliation Syndrome / Q000175:diagnosis / Q000503:physiopathology*; D005136:Eye Proteins / Q000378:metabolism*; D005260:Female; D005902:Glaucoma, Open-Angle / Q000175:diagnosis / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009887:Ophthalmoscopy / Q000379:methods; D011183:Postoperative Complications / Q000175:diagnosis / Q000503:physiopathology; D012016:Reference Values; D014130:Trabeculectomy
chemical_list: D005136:Eye Proteins
vernacular_title: Tyndallometrie mit dem Laser-flare-cell-Meter und biochemische Proteinbestimmung im Kammerwasser bei Augen mit Pseudoexfoliationssyndrom.