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  • Articles  (3)
  • Glare  (2)
  • Blue-yellow perimetry  (1)
  • substance P
  • 1990-1994  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Documenta ophthalmologica 78 (1991), S. 177-181 
    ISSN: 1573-2622
    Keywords: Glare ; straylight ; contrast sensitivity ; light scatter ; disability glare ; discomfort glare
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An overview is given of the basic phenomena that may lead to glare complaints in patients. Prominent among them is increased intraocular straylight; this can be measured. Other causes may include: increased sensitivity to normal straylight, the length of (increased) light and dark adaptation times, (small angle) neuronal lateral interaction. Distinction must be made between disability glare and discomfort glare. Tests have been proposed to determine glare-induced loss of various visual functions. Often the test results are thought to be directly related to straylight but this may be untrue.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-2622
    Keywords: Blue-yellow perimetry ; general sensitivity loss ; corrected sensitivity loss ; cataract
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A perimetric method using blue stimuli on a yellow background was compared with perimetry using white stimulion on a white background as a method of detecting glaucomatous damage. Meridian perimetry was used with an adapted Tübinger perimeter. The difference between the blue-on-yellow meridian and the white-on-white meridian was subdivided into two parts: the general blue sensitivity loss (GBSL), probably due to optical factors, and the corrected blue sensitivity loss (CBSL), probably due to glaucoma. Nine normals, fourteen primary open angle glaucoma (POAG) patients and nine ocular hypertensives (OHT) were tested. All POAG patients and some of the OHT group showed higher CBSL values than the controls. The blue-yellow meridian showed broader and deeper defects than the white-white meridian in all of the POAG group; some of the OHT group had defects in the blue-yellow meridian that were not present in the white-white meridian.In conclusion, blue on yellow perimetry shows promise as a method for more sensitive detection of early glaucomatous damage.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-2622
    Keywords: Corneal dystrophy ; Glare ; Straylight
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The direct compensation method allows for an accurate determination of intraocular light scattering between 3.5 and 25 degrees of scattering angle and is suitable for untrained subjects. The method was used to study light scattering in four forms of hereditary corneal dystrophies. Light scattering is the basis of glare complaints and was compared with visual acuity loss. The findings corresponded to the complaint patterns: in central crystalline dystrophy light scattering can be much increased with relatively well preserved visual acuity. In posterior polymorphous dystrophy the reverse is true. In macular dystrophy (Groenouw II) and lattice dystrophy the situation is more or less intermediate between these two extremes.
    Type of Medium: Electronic Resource
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