Thermal study of bare tips with various system parameters and incision sizes

Abstract

Microincision lens removal can be performed at safe temperatures with the knowledgeable selection of surgeon-controlled parameters.

Histomorphological and immunofluorescence evaluation of bimanual and coaxial phacoemulsification incisions in rabbits

“…To compensate for these limitations, bimanual phacoemulsification incisions use tighter wound geometry, which may cause oar locking and, thus, difficult intraocular manipulations. 5 Tsuneoka et al 12 suggest small incisions pose a greater risk that phaco tip movement will produce corneal deformation, excessive stromal hydration, and clouding around the incision. Although theoretically smaller wounds intuitively self-seal more easily, this holds true only if the wound morphology and integrity are maintained.…”

“…These techniques use tighter wound geometry, which may give rise to ''oar locking'' and thus lead to difficulties in intraocular manipulations. 5 At times, such geometry adds stress to the incision, leading to wound distortion, corneal hydration, and thermal injury. Furthermore, a hard nucleus, excessive phaco energy, reduced irrigation, and blockage of flow due to ophthalmic viscosurgical devices increase the probability of damage to the incision.…”

Microcoaxial phacoemulsification

“…Studies have evaluated the thermal impact of a vibrating needle. [1][2][3][4][5] Several assessed incision temperature using a bare ultrasound tip. [6][7] Others show the benefits of reducing delivered thermal energy by using various surgical techniques.…”

Fluid Temperature at the Corneal Endothelium during Phacoemulsification: Comparison of an Ophthalmic Viscosurgical Device and Balanced Salt Solution Using the Finite Element Method

“…All of the studies revealed that the phaco needle generates heat along its entire length [6][7][8][9] ( fig. 1 ).…”