| http://www.w3.org/ns/prov#value | - Category III: Conditions that Require InterventionFor a patient with ophthalmic or refractive abnormalities, the ophthalmologist prescribes glasses, contact lenses, or other optical devices; treats with medications; arranges for additional evaluation, testing, and follow-up as appropriate; and performs nonsurgical or surgical procedures including laser surgery when indicated.
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