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Eye disease is one of the most common forms of ill health, particularly in the elderly and many severe eye 1_______ are only partially treatable. Problems with the 2_______ pathway (eye, brain, eyelids, and lacrimal system which protects the eye) keep a steady flow of patients through the surgeries of both ophthalmologists who 3_______ surgery and optometrists / opticians who prescribe optical aids like 4_______.
diseases
visual
perform
glasses