منابع مشابه
Surgical management of presbyopia
Presbyopia, the gradual loss of accommodation that becomes clinically significant during the fifth decade of life, is a physiologic inevitability. Different technologies are being pursued to achieve surgical correction of this disability; however, a number of limitations have prevented widespread acceptance of surgical presbyopia correction, such as optical and visual distortion, induced cornea...
متن کاملOptics of conductive keratoplasty: implications for presbyopia management.
PURPOSE To define the corneal optics of conductive keratoplasty (CK) and assess the clinical implications for hyperopia and presbyopia management. METHODS Four analyses were done. (1) Multifocal effects: In a prospective study of CK, uncorrected visual acuity (UCVA) for a given refractive error in 72 postoperative eyes was compared to control eyes. (2) Surgically induced astigmatism (SIA): 20...
متن کاملPrandial presbyopia.
Loss of accommodation amplitude during eating (prandial presbyopia) is a rare phenomenon that has been reported in only 1 patient who had had head trauma. We report 2 patients who had not had head trauma and whose accommodative amplitudes, measured by dynamic retinoscopy, became markedly diminished within 1 minute of starting a meal and did not recover for 55-60 minutes. Apart from this abnorma...
متن کاملCurrent understanding in diagnosis and management of factor XIII deficiency
Factor XIII or "fibrin-stabilizing factor," is a transglutaminase circulates in the blood circulation as a hetero tetramer with two catalytic A subunits and two carrier B subunits. This important coagulation factor has a crucial role in clotting cascade and produces strong covalent bonds between soluble formed fibrin monomers during coagulation. This stable cross linked fibrin strands are resis...
متن کاملGender differences in presbyopia
is the loss of lens accommodation with age that results in an inability to focus at near distances. It is receiving growing attention because of the recognition that good near vision is needed to accomplish a broad range of tasks, not only reading and writing. Research shows that there are differences between men and women in the prevalence, age of onset, and severity of presbyopia, 1 in the ty...
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ژورنال
عنوان ژورنال: Middle East African Journal of Ophthalmology
سال: 2014
ISSN: 0974-9233
DOI: 10.4103/0974-9233.124080