CORNEAL ENDOTHELIAL PROTECTION BY DIFFERENT VISCOELASTICS DURING PHACOEMULSIFICATION
YASER ABDEL MAGEED MOHAMED EL TAHER;
Abstract
The corneal endothelium is the lining of the back surface of the cornea. It is a precious layer for corneal deterguesence.
During phacoemulsification, the corneal endothelium can be damaged by intraocular mechanical trauma, by instruments, lens fragments, intraocular lens contact, irrigation fluid turbulence and cavitation air bubbles. \
I
- Several viscoelastic substances are developed, in
order to protect the corneal endothelium during phacoemulsification.
The efficacy of viscoelastic substances is dependent upon their rheological function and their physical and chemical properties.
Viscoelastic substances are classified into two
<.:ntcgoril:s:
1-cohesive. Which subdivided m cohesive, supercoheisve.
2-dispersive viscoelastics.
The cohesive viscoelastic substances have higher molecular weight; higher viscosity at low shear rate and their viscosity drop rapidly as shear rate increases, so they provide good maintenance of the
During phacoemulsification, the corneal endothelium can be damaged by intraocular mechanical trauma, by instruments, lens fragments, intraocular lens contact, irrigation fluid turbulence and cavitation air bubbles. \
I
- Several viscoelastic substances are developed, in
order to protect the corneal endothelium during phacoemulsification.
The efficacy of viscoelastic substances is dependent upon their rheological function and their physical and chemical properties.
Viscoelastic substances are classified into two
<.:ntcgoril:s:
1-cohesive. Which subdivided m cohesive, supercoheisve.
2-dispersive viscoelastics.
The cohesive viscoelastic substances have higher molecular weight; higher viscosity at low shear rate and their viscosity drop rapidly as shear rate increases, so they provide good maintenance of the
Other data
| Title | CORNEAL ENDOTHELIAL PROTECTION BY DIFFERENT VISCOELASTICS DURING PHACOEMULSIFICATION | Other Titles | وقاية الخلايا البطانية للقرنية بواسطة الانواع المتعددة للمواد الهلامية خلال عملية استحلاب العدسة بالموجات فوق الصوتيه | Authors | YASER ABDEL MAGEED MOHAMED EL TAHER | Keywords | CORNEAL , VISCOELASTICS, corneal endothelium | Issue Date | 2001 |
Attached Files
| File | Size | Format | |
|---|---|---|---|
| YASER ABDEL MAGEED MOHAMED EL TAHER.pdf | 1.54 MB | Adobe PDF | View/Open |
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