Review of Intravitreal Implants for Extended Drug Delivery to the Posterior Segment of the Eye
Author(s):
Abstract:
Intravitreal injection is the most common approach for drug delivery to the posterior segment in humans. However, following the injection, drugs are rapidly eliminated from the vitreous, with half-lives up to a few days. Depending on the rate of clearance from the vitreous, large boluses and frequent administrations may be required to ensure therapeutic levels over an extended period of time. Multiple intraocular injections canlead to an increased likelihood of complications, such as vitreous hemorrhage, retinal detachment, endophthalmitis and cataract. In order to decrease the occurrence of complications associated with intravitreal injections, sustained-release drug delivery systems are desired to provide drug release into the posterior segment for a longer period of time (months or even years) compared to direct injection. This article reviews the current status of various intravitreal implants, both approved and in clinicaldevelopment. These implants are: Vitraset, Retisert, Ozurdex (Posurdex), I-vation, Iluvien (Medidur) and NT-501. A search of the English language PubMed database was conducted with keywords of “intraocular implant”, “intravitreal implant”, “sustained-release” and “intravitreal drug delivery”.
Language:
Persian
Published:
Journal of Ophthalmology Bina, Volume:16 Issue: 4, 2011
Page:
351
magiran.com/p884483
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یکساله به مبلغ 1,390,000ريال میتوانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.
In order to view content subscription is required
Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!