{'fraction_non_alphanumeric': 0.023734177215189875, 'fraction_numerical': 0.0, 'mean_word_length': 5.59375, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Keratoconus in USAF flying personnel.

Abstract : Despite the rigid screening of all categories of rated personnel for the ability to meet stringent visual standards, cases of keratoconus continue to occur in the USAF flying population. This paper reviews the recent experience of the USAFSAM Aeromedical Consultation Service with this disease entity. Aspects of incidence, early diagnosis, serial progression, and treatment are discussed. Two cases of keratoconus which developed after four years of corneal contact lens wear are presented, and the increasing problem of intentional corneal molding ('orthokeratology') is reviewed.