33. Pterygium - The GEC-ESTRO Handbook of Brachytherapy

Pterygium

5

THE GEC ESTROHANDBOOKOF BRACHYTHERAPY | Part II Clinical Practice Version 1 - 01/03/2023

Figure 2: A series of typical clinical presentation

Figure 3: (a) Example of Strontium-90 eye applicator type SIA-1 with a stainless-steel filter of 0.1 mm (screenage) - (b) Example of Strontium-90 eye applicator type SIA-6. (Reproduced from Cohen et al. [15]).

Figure 4: Placement of strontium ophthalmic applicator in the nasal bulbar conjunctiva as adjuvant treatment for pterygium (Courtesy of B. Pieters).

Figure 5: Rapid dose fall-off near the strontium-90 applicators, from 100% to 0.5 percent in 5 mm