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  • 1985-1989  (4)
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Graefe's archive for clinical and experimental ophthalmology 222 (1985), S. 263-265 
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In 59 patients (94 eyes) who underwent penetrating keratoplasty, the aqueous-cornea transfer coefficient,k c ⋅ ac, and the distribution ratio between the aqueous and the cornea,r ac, of fluorescein were determined by means of the oral fluorescein method. The thickness of the graft was also measured. In the early postoperative period,k c ⋅ ac was significantly increased and the graft was thick. During the next several months, both parameters became almost normal. A significantly positive correlation was found betweenk c ⋅ ac and graft thickness. On the other hand, no significant correlation was found betweenr ac and postoperative period,k c ⋅ ac or graft thickness. It was concluded that the endothelial barrier function was damaged at the time of surgery and was gradually repaired postoperatively.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Graefe's archive for clinical and experimental ophthalmology 224 (1986), S. 110-112 
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A method for isolating fluorescein glucuronide from the urine using silica gel chromatography and preparative high-performance liquid chromatography is described. The product obtained was free from significant fluorescent impurity on thin-layer chromatography and analytical high-performance liquid chromatography.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Graefe's archive for clinical and experimental ophthalmology 222 (1985), S. 259-262 
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects of S-596 and coarteolol, new beta-adrenergic blockers, were studied by means of the oral fluorescein method. Transfer coefficients by diffusion,k d ⋅ pa, and by flow,k fa, were estimated in a total of 11 normal young volunteers, in whom the drug was instilled in one eye and the placebo in the fellow eye. With 0.5% dl-S-596,k d ⋅ pa increased to 124 ± 9% (mean ± SD) andk fa decreased to 67 ± 10% of the control eye. With 1% dl-carteolol,k d ⋅ pa increased to 121 ± 4%, andk fa decreased to 84 ± 11% of the control eye. Both S-596 and carteolol increased iris permeability and decreased the aqueous flow rate significantly. In a group of 13 cases, intracapsular extraction of senile cataract was carried out with postoperative routine instillations, and in another group of 7 cases, it was carried out with additional topical flurbiprofen, a new nonsteroidal anti-inflammatory drug. Flurbiprofen ophthalmic solution (0.1%) was instilled 3, 2, 1, and 0.5 h before the surgery and 4 times a day postoperatively. On the 6th postoperative day, a fluorophotometric study was carried out using oral fluorescein, and a coefficient that reflects the permeability of the blood-aqueous barrier after the cataract surgery was calculated. It was found that additional topical flurbiprofen considerably suppresses the disruption of the blood-aqueous barrier.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Graefe's archive for clinical and experimental ophthalmology 224 (1986), S. 113-117 
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Comparative studies of fluorescein and fluorescein glucuronide were carried out. Binding to human serum protein was studied using an Amicon MPS-3 ultrafiltration unit; it averaged 63% for fluorescein glucuronide and 85% for fluorescein. Intracameral penetration of both compounds was studied in the human eye, and the concentration changes of both compounds in the plasma ultrafiltrate and in the anterior chamber were analyzed, based on Davson's equation. The coefficient of entry into the anterior chamber (k i ) was 0.018 ± 0.007 h−1 (mean ± SD,n = 10) for fluorescein glucuronide and 0.054 ± 0.033 h−1 for fluorescein, and the former was significantly lower than the latter (P 〈 0.005). The rate of loss from the vitreous (k v ) was studied by injecting each compund into the vitreous of the pigmented rabbit and following the fluorescein intensity changes in it. It was 0.042 ± 0.008 h−1 (mean ± SD,n = 8) for fluorescein glucuronide and 0.17 ± 0.01 h−1 for fluorescein, and the former was significantly smaller than the latter (P 〈 0.001). Intraperitoneal injection of probenecid significantly decreased thek v of fluorescein but had little effection that of fluorescein glucuronide. It was suggested that fluorescein glucuronide is lost from the vitreous mainly by a passive mechanism.
    Type of Medium: Electronic Resource
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