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العنوان
Modifiable Intraocular Lens Technologies/
المؤلف
Noor,Mohamed Salah Aldeen Mohamed .
هيئة الاعداد
باحث / محمد صلاح الدين محمد نور
مشرف / تامـر محمــد الرجــال
مشرف / عبد الرحمن جابر سلمان
مشرف / منى كمال عبد اللطيف أمين
تاريخ النشر
2017.
عدد الصفحات
115.p;
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
طب العيون
تاريخ الإجازة
1/1/2017
مكان الإجازة
جامعة عين شمس - كلية الطب - Ophthalmology
الفهرس
Only 14 pages are availabe for public view

from 115

from 115

Abstract

Eye surgeons have long needed a solution to a commonly occurring problem, which are the residual refractive errors following cataract surgery. Thus, several IOLs were developed so that their power could be adjusted postoperatively. They are known as modifiable IOLs.
The Light-adjustable IOL is one of these modifiable IOLs. It contains phaoreactive components that react to ultraviolet (UV) waves of a certain wave length allowing changing the IOL shape and power. Another kind of modifiable IOls is the multicomponent IOL. It has a base lens component implanted in the lens capsular bag and a front lens component that can be changed several times allowing change of the IOL power with minor surgical procedure.
In the mechanical modifiable IOL the outer part of the haptic of the IOL becomes fixed in a determined position. The optic is attached to the inner part of the haptic, so that it can be moved along the optical axis. The magnetically modifiable IOL consists of a compressible and resilient base annulus and a rotatable annular lens component which is engaged in the annulus.. The New-motor driven adjustable IOL has the same principle, but in this type the axial movement of the IOL optic relative to the fixed haptic position in the capsular bag was achieved by a very small ultrasonic motor.
In conclusion, modifiable IOLs are new technologies addressing the problem of ametropic surprise which commonly occurs after cataract surgery. They are being developed to achieve accurate results for a better quality of vision and thery may possibly be the next generation in the development of IOLS.