الفهرس 
Anatomy of the crystalline lens, ciliary muscle and zonulesOnly 14 pages are availabe for public view
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Abstract
Recent trends in treatment of presbyopia
Mona Abd El-Fatah Mohamed,
M.B.B.Ch, Faculty of medicine, Ain Shams University
Presbyopia which faces many people after 40yrs is a big problem as it make patient complains from headache, strain and blurring of vision after reading small font print. The pathophysiology of presbyopia is likely to result from deterioration in structure and function of a number of inter-related tissues. Changes in crystalline lens dimensions with age, the associated change in geometry of zonular attachments, and changes in viscoelastic properties of the lens capsule and lens matrix would, however, appear to be the principal correlates for the onset of presbyopia this changes approved by many theories like Helmholtz theory, Schachar theory. The treatment is the challenge as there are 4 ways by supportive approach like using drugs which contain lutein and zeaxanthin, another way by exercise, optical non surgical approach like glasses and lenses, corneal approach like monofocal lasik and multifocal lasik , scleral approach like scleral expansion band, lenticular approach like IOL implantation.