Corneal Shape and Visual Performance After Keratorefractive Surgery

Pol, Corina van de

doi:10.21236/ada403623

Cited by 1 publication

(1 citation statement)

References 3 publications

(7 reference statements)

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“…This has driven a major paradigm shift in terms of defining success occupationally after refractive surgery (17)(18)(19)(20)(21)(22)(23)(24). The USAF maintains great interest in these reports because any reduction in visual performance, no matter how subtle, may seriously impact mission safety and performance.…”

Section: Introductionmentioning

confidence: 99%

Prospective Evaluation of Mesopic Night Vision and Night Vision Goggle Visual Acuity After Photorefractive Keratectomy (PRK)

Miller¹,

Thompson²,

Baldwin³

et al. 2005

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The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. SUPPLEMENTARY NOTES ABSTRACTThe US Air Force PRK Study involved 98 non-flying, active duty volunteer personnel. All study subjects underwent a comprehensive array of vision tests. Baseline and post-operative data were collected at the Ophthalmology Branch of the Clinical Sciences Division of the USAF School of Aerospace Medicine, in partnership with the Air Force Research Laboratory and Wilford Hall Medical Center. This report covers results from pre-and post-operative night vision goggle (NVG) visual acuity testing. 65 treated subjects and 15 untreated controls completed all post-op visits through 12 months, and 52 treated subjects and 14 untreated controls through 24 months. NVG acuities were collected on a high contrast letter chart (Bailey-Lovie), and custom made grating charts. There was a statistically significant loss of letter acuity at the 4-and 6-month post-op visits for treated subjects but not controls. Acuity returned to baseline levels by 12 months. Mean loss of acuity for groups was typically only a few letters; however, treated subjects were more likely to lose than gain acuity beyond that predicted from repeatability studies with controls.

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