Postoperative irradiation of pterygium with 90Sr eye applicator

Ocular complications following I-125 brachytherapy for choroidal melanoma

“…[60][61][62] Petrovich et al 63 described the histologic appearance of enucleated eyes with choroidal melanoma that had been treated with plaque brachytherapy. Scleral atrophy was seen in 33% of post-plaque eyes.…”

Soft X-Ray Therapy of Recurrent Pterygium – an Alternative to 90Sr Eye Applicators

“…The proliferating tissue is characterized by chronic inflammation, proliferating cells, connective tissue remodeling and angiogenesis [5]. The initial treatment of choice was until a few years ago microsurgical (so-called bare sclera) excision but the recurrence rate after excision alone has been reported to be up to 40% [9]. New surgical procedures like free conjunctival autograft are used to reduce the local recurrence rate [4,19].…”

NCS Report 14: Quality control of sealed beta sources in brachytherapy

“…Pterygium is a benign disease, treated by excision of the affected part of the sclera. Postoperative irradiation of this area reduces the recurrence from 20-40% to less than 5% [25]. In the Netherlands and Belgium this indication most frequently occurs in patients who have been exposed to a large amount of UV radiation (often during presence close to the equator).…”

“…A change of 0.1 mm in radial source positioning causes dose differences in the order of 10%. 2) Relatively little is known about the minimum absorbed dose needed to achieve local control in the three applications of beta sources: in-stent restenosis [16], pterygium [25] and eye melanoma. The clinical results, however, show relatively high local control rates.…”

“…The film color darkens during the first days after irradiation. At [25][26][27][28][29][30] o C are estimated to be no more than a few percent when a 24 hours post-irradiation time is used.…”