13th February 2025

A 50-year-old lady presenting with chronic bilateral ptosis and diplopia sees her GP for “feeling tired all the time”.

A 50-year-old lady presenting with chronic bilateral ptosis and diplopia sees her GP for “feeling tired all the time”. Her past medical history includes hyperthyroidism, which is currently well controlled.

Examination reveals 3 mm ptosis in both eyes and significant bilateral restriction of eye movements, which do not follow any particular pattern. When assessing and treating this condition, which of the following is true?

Select the SINGLE most appropriate option from the list below. Select ONE option only.