The use of viscous and viscoelastic substances in ophthalmology

摘要: Publisher Summary This chapter discusses the criteria for selection of viscous or viscoelastic material ophthalmology. Substances suitable intraocular use should not impair visibility operation field. Transparency, therefore, is a primary prerequisite. The index refraction deviate much from that aqueous to avoid distortion and changes spatial orientation in Watery fluids differ their internal friction and, hence, velocity flow. Their action as surface space tactical tools based on relation between rate inflow outflow. higher flow, more demanding control flow system by surgeon. Conversely, slow stabilising factor surgery. Viscous are ideal layers deposited tissue implant will remain there. As tools, however, usefulness depends outflow resistance given viscosity turn size orifice.