ABSTRACT
The possibility of YAG laser interventions on the posterior capsule of the lens with subsequent argon laser coagulation of the retina in patients with aphakia and artiphakia is studied. The optimal intervention for secondary cataract in patients with artiphakia is circular resection of the posterior capsule. Intraocular lenses prevent such complications as vitreous hernias and allow creating a larger and better shaped opening in the posterior chamber, thus providing a better access for laser coagulation of the retina.
Subject(s)
Laser Coagulation/methods , Lens Implantation, Intraocular , Ophthalmologic Surgical Procedures/methods , Aphakia, Postcataract/surgery , Humans , Postoperative Complications/surgery , Reoperation/methods , Time Factors , Vitreous Detachment/surgeryABSTRACT
A hydromonitoring exposure with a high-velocity pulsed liquid jet aimed into Schlemm's canal lumen and a similar exposure with a syringe at a 60 H pressure on piston were carried out in isolated eyes. Examinations of stained sections showed that hydromonitoring exposure at a pressure of 1 to 5 techn. atm. induced destruction of Schlemm's canal internal wall and cyclodialysis. If a higher pressure was used, corneal stratification was observed. Hydromonitoring exposure at a pressure of less than 1 techn. atm. or an exposure with a syringe induced deformation of Schlemm's canal internal wall, dilatation of intertrabecular fissures, and ruptures of individual trabecular layers.
Subject(s)
Intraocular Pressure , Monitoring, Physiologic/adverse effects , Sclera/blood supply , Aged , Anterior Chamber/injuries , Anterior Chamber/pathology , Equipment Design , Humans , Hydrostatic Pressure/adverse effects , In Vitro Techniques , Middle Aged , Monitoring, Physiologic/instrumentation , Monitoring, Physiologic/methods , Sclera/injuries , Sclera/pathology , Syringes , Venules/injuries , Venules/pathologyABSTRACT
A physical approach to the description of the motion mechanism of cilia based on the importance of hydrodynamical interactions between the intraciliary microstructures is proposed. The motion of the cilium model was investigated theoretically. A mechanism of synchronization of cilia beating in metachronal waves is proposed.