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Van Delta biography, Van Delta discography
Write a ReviewYour TakeTell the world what you think about Van Delta!AEC One Stop Group, Inc.Chevrolet Express LT van, nice van, full load, leather and every option available but I did'nt like it, so I sold it and went back to the old 95, I still love it!Guestbook entries failed to load.When more people add tags for Van Delta, a tag cloud will appear here.Learn more about tagging on Last.If you'd like to add some events for Van Delta then you can do so on this page.Music and the eMusic logo are registered trademarks in the USA and other countries.Music Remote is a trademark of eMusic.Was Monovision Contact Lens use the Cause?There were 3 minor injuries and 60 uninjured.The airplane had struck the approach light structure and the end of the runway deck during the approach.This misperception occurred because of visual illusions produced by the approach over water in limited light conditions, the absence of visible ground features, the rain and fog, and the irregular spacing of the runway lights.There are very few, if any, documented aviation accidents where the root cause was attributed to the use of monovision contact lenses by a pilot.As we age, our visual acuity will inevitably become worse.CRT for many years), or medical problems such as diabetes.As we age, the first noticeable difference generally occurs with distant vision.We compensate for these deficiencies by using contact lenses, glasses, or perhaps laser surgery.As we continue to age, it becomes increasingly more difficult to focus on near objects, as well as distant objects.You may be familiar with bifocals.Presbyopia is the decreasing ability to accommodate as our eyes age.An old lens is very sluggish in executing even the small shape changes of which it is still capable.Compared to bifocal glasses, the results are much more satisfactory for patients as can be seen from the pictures below.Obviously, if you had a choice between the picture on the left and the picture on the right, you would choose the latter.At this time, pilots are not required to let an Aviation Medical Examiner know they are using monovision lenses when they get their medicals.However, the shift will be towards education on both sides as well as divulgence of this critical information in the future.Note the path over water, which
in itself can make this a tricky landing, particularly in bad weather or at night.Another picture of runway 13 at LaGuardia.Although this picture is very grainy, you can still discern the complexity of an approach
over water.Height judgment is the biggest problem.After the NTSB posted their findings, a few leading experts in the field countered with dissenting points of view.With all that going on, I am not sure how they focused on the pilots contact lenses since he had made hundreds of normal landings up to that time.Monovision contact lenses is the use of a lens in one eye for distant vision and the use of a near vision contact in the other eye.Under FAA regulations, it is illegal for a pilot to use monovision contacts only because when in use, the opposite eye correction is not up to visual acuity standards.Monovision pilots have no vision in one eye.If anything, I am even more convinced that the monovision lenses had nothing to do with the Delta crash.Neil Murray, another Aviation Medical Examiner and Ophthalmologist for the Civil Aviation Safety Authority in Australia says "The NTSB stance on monovision seems somewhat odd, basing their premise on the use of stereoscopic vision for approach and landing procedures.While stereopsis does need good clear vision in both eyes for the distance at which the task is done, most authorities within the vision sciences area will admit that stereopsis is not the vision ability that is used for approach and landing tasks."Retinal image flow relies on the relative angular movement of objects across the retina, with those objects further to the side from the centre of direction having a faster angular rate of movement.""Thus the NTSB comment on reduced stereopsis from Monovision seems based on incorrect and irrelevant information.""In the AvWeb article, there was one paragraph that I had submitted that was left out, and does qualify the conditions and pilots for whom monovision may be considered."This means that the monovisioned pilot is no poorer than a binocular pilot who has slightly reduced vision in one eye, but has both eyes still passing the standard."We were amazed at the different ages that presbyopia was showing up across the different nationalities.Atlanta Olympics for 3 weeks, and so ended up treating a number of patients I had seen at Atlanta, again in Sydney."Equally it negates the hundred of successful landings under all sorts of conditions...."Unfortunately, the NTSB tends to blame accidents on any misdemeanor possible.The best solution is make sure you do not have an accident and the issue will never arise!This article served two purposes: To educate pilots to the fact that monovision lenses are NOT approved for flying.Sekular, Robert, and Blake, Randolph (1994) Perception: Third Edition.Executive Summary Report on the Crash of Delta Airlines Flight 554.AvWeb Online Web Article (1998) Various Contributors.The Controversy Over "Monovision" Lenses.Human Factors training and research, and expert witness
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