ABSTRACT
Blood circulation in the central retina was examined in 30 eyes suffering from glaucoma, using the entoptic phenomenon to count leucocytes travelling through the retinal capillaries in the macula area. Two measurements were taken for each eye at different intraocular pressure levels and the results were compared with each other. They showed that reduction of an originally high intraocular tension level significantly increased the blood flow. In a control group of healthy eyes in a similar group of patients insignificant changes in blood flow were recorded. There was thus a direct linear relationship between reduction of intraocular pressure and relative increase in blood flow with a strongly positive correlation (r = 0,74). Hence an effective autoregulation of blood flow in relation to changes in intraocular pressure could not be demonstrated.
Subject(s)
Fundus Oculi , Glaucoma/physiopathology , Intraocular Pressure , Microcirculation , Optics and Photonics/instrumentation , Retinal Vessels/physiopathology , Adolescent , Adult , Aged , Blood Pressure , Capillaries/physiopathology , Female , Glaucoma/therapy , Humans , Leukocyte Count , Male , Middle Aged , Vision, EntopticABSTRACT
The results of magnet implantation in the upper and lower eyelids of 29 patients suffering from Keratopathia due to lagophthalmos due to facial palsy as well as the surgical techniques involved are described. Contrary to a lateral tarsorrhaphy - still popular today - this method does not alter the form or the size of the palpebral fissure nor does it hinder the visual field. It is technically simple to perform and easily reversible should nerve function recover. The subjective results were also good.
Subject(s)
Eyelid Diseases/surgery , Facial Paralysis/complications , Magnetics , Eyelids/innervation , Eyelids/surgery , Facial Paralysis/surgery , Humans , Male , Methods , Middle Aged , Ophthalmic Nerve/surgeryABSTRACT
Between February, 1974, and mid-December, 1975, 43 patients with paralytic facial palsy were operated upon with lid magnets, according to a method first devised by Mühlbauer and others (1973). When 37 patients were re-examined 3 months to 2 years post-operatively, 27 had both magnets in situ functioning well. In nine patients one or both magnets had been removed because of return of 7th nerve function. Including our information about those patients not available for re-examination, the method has definitely failed in only four. Cosmetically and functionally the results are subjectively as well as objectively encouraging and appear superior to a lateral tarsorrhaphy.