Question: refraction defect due to irregularities of the surface of the cornea or lens
[{'answer': 'Keratoconus ( KC )', 'provenance': [{'wikipedia_id': '252630', 'title': 'Keratoconus', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '252630', 'title': 'Keratoconus', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 302, 'bleu_score': 0.959574895300321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1290113695879640322}, 'section': 'Section::::Abstract.'}]}]