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Take and document patients' medical histories.
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Measure visual acuity, including near, distance, pinhole, or dynamic visual acuity, using appropriate tests.
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Measure corneal curvature with keratometers or ophthalmometers to aid in the diagnosis of conditions, such as astigmatism.
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Measure and record lens power, using lensometers.
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Perform slit lamp biomicroscopy procedures to diagnose disorders of the eye, such as retinitis, presbyopia, cataracts, or retinal detachment.
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Collect ophthalmic measurements or other diagnostic information, using ultrasound equipment, such as A-scan ultrasound biometry or B-scan ultrasonography equipment.
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Conduct tests, such as the Amsler Grid test, to measure central visual field used in the early diagnosis of macular degeneration, glaucoma, or diseases of the eye.
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Clean or sterilize ophthalmic or surgical instruments.
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Call patients to inquire about their post-operative status or recovery.
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Perform advanced ophthalmic procedures, including electrophysiological, electrophysical, or microbial procedures.
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Take anatomical or functional ocular measurements, such as axial length measurements, of the eye or surrounding tissue.
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Assess abnormalities of color vision, such as amblyopia.
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Assess refractive condition of eyes, using retinoscope.
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Assist physicians in performing ophthalmic procedures, including surgery.
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Supervise or instruct ophthalmic staff.
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Conduct binocular disparity tests to assess depth perception.
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Perform ophthalmic triage, in the office or by phone, to assess severity of patients' conditions.
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Instruct patients in the care and use of contact lenses.
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Conduct ocular motility tests to measure function of eye muscles.
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Photograph patients' eye areas, using clinical photography techniques, to document retinal or corneal defects.
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Create three-dimensional images of the eye, using computed tomography (CT).
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Conduct low vision blindness tests.
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Administer topical ophthalmic or oral medications.
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Maintain ophthalmic instruments or equipment.
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Measure the thickness of the retinal nerve, using scanning laser polarimetry techniques to aid in diagnosis of glaucoma.
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Measure corneal thickness, using pachymeter or contact ultrasound methods.
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Educate patients on ophthalmic medical procedures, conditions of the eye, and appropriate use of medications.
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Conduct visual field tests to measure field of vision.
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Calculate corrections for refractive errors.
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Conduct tonometry or tonography tests to measure intraocular pressure.
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Perform fluorescein angiography of the eye.