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RT technique

o

The whole orbit may be treated with 3D conformal or IMRT

techniques

o

The conjunctival sac and lacrimal gland may be treated with en face

electrons

o

Bolus should be used in all cases of conjunctival/superficial

involvement or definite or suspected extension

o

Lens shielding may be used for disease limited to

conjunctiva/eyelid, if appropriate and only if there is confidence that

disease will not be shielded