Pterygium as an early indicator of ultraviolet insolation: a hypothesis.
نویسنده
چکیده
منابع مشابه
Ultraviolet light and pterygium.
The purpose of this study was to evaluate the contribution of ultraviolet light (UV) as a causal factor of primary and pterygium recurrence. A conjuctival autograft transplantation was a surgical method of pterygium treatment. In the first group (38 eyes) were patients with primary and recurrent pterygium exposed to sun (worked outdoors), evaluating geodemographic status, and in the second grou...
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This paper will discuss the different approaches to the surgical management of pterygium, emphasizing the conjunctival autograft technique and the use of antimetabolites. HISTORICAL PERSPECTIVE Clinically, a pterygium is a wing-shaped fibrovascular growth arising from the bulbar conjunctiva onto the superficial cornea.1 It is composed of a body, which overlies the sclera, and a head, which conf...
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Photocatalytic reduction of carbon dioxide to formaldehyde was investigated on four semiconductor photocatalysts (FeS, FeS/FeS2, NiO and TiO2). The reaction was carried out in continues flow of CO2 gas bubbled into the reactor. Semiconductor photocatalysts were characterized by X-Ray diffraction (XRD) and Diffuse Reflectance Spectroscopic (DRS) methods. Sulfide ion was used as hole scavenger. T...
متن کاملPterygium in welders.
Pterygium is thought to be hyperaemia of fibrovascular tissue on to the cornea caused by ultraviolet radiation of sunlight. We observed a significantly high incidence of pterygia in welders who were exposed occupationally to excess ultraviolet radiation and found a close relationship between the incidence and the length of employment as a welder (r = 0.975, p less than 0.05). This study attempt...
متن کاملLocal pro-inflammatory cytokine and nitric oxide responses are elevated in patients with pterygium
Pterygium is a common ocular surface disease observed in humans. Chronic ultraviolet (UV) exposure is extensively recognized as an aetiological factor in the pathogenesis of this disease. This hypothesis is sustained by epidemiological and histopathological data in relation to UV injured skin. Although some findings have indicated that genetic factors, anti-apoptotic and immunological mechanism...
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عنوان ژورنال:
- The British journal of ophthalmology
دوره 77 11 شماره
صفحات -
تاریخ انتشار 1993