presbyopia
DESCRIPTION
Prezentace o presbyopiiTRANSCRIPT
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PRESBYOPIA AND EYE EXERCISES
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Presbyopia• Eye lens loses elasticity and plasticity (the ageing of a
lens)• Defect starting up to 40 years of the age of a man• At the age of about 60 stabilizes• It affects all people• „Short arms“, postponing of work nearby
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Hypermetrop - presbyop• Start earlier• Stronger converging lenses
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Myop - presbyop• Later start• They take off distance glasses for reading
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Correction• Glasses for reading• Bifocal, trifocal lenses• Multifocal lenses• Contact lenses• Laser operation• Intraeye lens• monovision
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Glasses for reading• Only for one distance• For ametrops necessity to change glasses for different
distances
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Bifocal, trifocal lenses• Only 2 (3) distances• Jump of picture• Limited visual field• Visible divide
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Multifocal lenses• Vision in all distances• In periphery „swinging of picture“• Narrow space for middle distance • Longer accustoming time
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Contact lenses• Unsuitability for everyone• Accustoming time• High hygiene• Wrong usage can lead to eye infection• Expensive
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Laser operation• 1. Correcting of a former defect• 2. Grinding of a multifocal shape tvaru to a cornea• Intervention into an organism• Postoperative result doesn´t have to be final• Irreversible intervention
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Monovision• One eye in the distance and one eye near• The pathient doesn´t have to get used• Unaesthetic with glasses on
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Intraeye lens
• 1. an eye lens is replaced with a multifocal lens• PRELEX• Difraktion streaks• On the retina 2 pictures, in distance and nearby• From the beginning sickness• In the future an operation of katarakta won´t be in danger
• It is possible to change a lens in case of unsuitability
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Prelex
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Intraeye lens• Lens is put into eye with concentric circles• Patient can see in all distances• From the beginning sickness• He doesn´t have to acclimatize to it…next operation• If it doesn´t suit , it can be taken out
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Putting off presbyopie• American doctor William H. Bates at the turn of 19. and
20. century• Practise eye exercises for 10-15 minutes every day• Without glasses• To practise exercises as far as we manage
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Warming up• Close eyes and and nod your head• Forward and back• From side to side• All around• 15 times in every direction
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• Up and down• 10 times
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• From left to right• 10 times
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• From up left corner to down right corner• From up right corner to down left corner• Everyone 10 times
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• Circle with eyes to one side and other side• To each side 5 times
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The Alphabet• Several times circumscribe a letter H and A with your
eyes• Start on down left• End on down right
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The envelope• Circumscribe a shape of an envelope with your eyes• Up on the left, down on the right,up on the right, down on
the left
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The clock• Imagine a large clock face• Go pass single figures with your eyes• In direction of clock hands and the opposite direction.
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Focusing• Focus on the top end of a pencil• Still focus and move a pencil closer
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Focusing• Focus on a distant object (5m)• Focus on a close object (10-15cm)• 10 times
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After exercising• Lean on• Close your eyes and cover them with your palms• Relax• For 1-3 min