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Explain the implications of the Council of Nicaea.
Proctoscope
A medical instrument used to examine the interior of the rectal cavity.
Jaeger System
A chart used in optometry and ophthalmology to measure near vision acuity, consisting of texts of various sizes printed on a card.
Visual Acuity
The clearness or acuteness of sight, usually determined by how well one can identify letters or numbers from a set distance.
Flexible Sigmoidoscopy
A medical procedure involving the examination of the lower part of the colon using a flexible tube-like instrument.
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