Document ID: chunk:federal_register_of_legislation:F2015L01674:reg:9
Version: federal_register_of_legislation:F2015L01674
Segment Type: reg
Provision Reference: reg 9
Character Range: 3739–4695

9               Factors that must exist
At least one of the following factors must exist before it can be said that, on the balance of probabilities, pterygium or death from pterygium is connected with the circumstances of a person's relevant service:
(1)          having sunlight exposure to the unprotected eye for at least 4 500 hours while in a tropical area, or having equivalent sunlight exposure in other latitude zones, before the clinical onset of pterygium;
Note: equivalent sunlight exposure in other latitude zones, tropical area and unprotected eye are defined in the Schedule 1 – Dictionary.
(2)          having heavy exposure of the affected eye to dust, for an average of at least 20 hours per week, for at least the four years before the clinical onset of pterygium;
Note: heavy exposure of the affected eye to dust is defined in the Schedule 1 – Dictionary.
(3)          inability to obtain appropriate clinical management for pterygium.