ABSTRACT
The purpose of the present study is to evaluate the iridial microcirculation by fluorescent iridial angiography after laser cataract extraction by using a new extraction device, i.e. "RAKOT", based on the Nd:YAG-laser with wave length of 1.44 mcm. 25 eyes (21 patients) aged 71 to 87 with mature senile cataract were examined. The method of laser cataract extraction was used in 14 cases. These eyes made up the main examination group. As for the controls (11 eyes), the manual technic of cataract extraction was used for them. The results in the main group show that the degree of the response of the iridial microvessels to surgery is insignificant and the microcirculation restores completely in 1.5-2 months after surgery provided there are no initial pathological changes in the iridial microcirculation (3 eyes). A short-time intensification of permeability of the iridial microcirculation is possible in eyes with a pronounced initial pathology in the iris (11 cases), however it restores to the original level during 3-3.5 months after surgery. The iridial microcirculation restores in the controls during 3 months after surgery. The described data demonstrate that the laser cataract extraction does not lead to pronounced iridial vascular disorders. A comparison with the controls is indicative of a lower trauma in case of laser method versus the manual technic of lens extraction.
Subject(s)
Cataract Extraction , Fluorescein Angiography , Iris/blood supply , Laser Therapy , Age Factors , Aged , Aged, 80 and over , Female , Follow-Up Studies , Humans , Male , Microcirculation , Time FactorsABSTRACT
The authors analyze the results of fluorescent angiography of the iris in 41 children operated on for congenital (n = 11) and traumatic (n = 30) cataracts. Iris clips-lenses with iridointra- and iridocapsular fixation and the posterior-chamber lenses with fixation in the capsular sac and sulcus ciliaris were implanted. The time parameters of iridal microcirculation normalized in 3 months after surgery in children with congenital cataracts. Increased permeability of the iridal vessels was detected before surgery in 50% of the children with traumatic cataracts. Iridal microcirculation recovery after surgery occurred later in the majority of patients: in 6 months, whatever the type of intraocular lens and the mode of its fixation. In some children with manifest posttraumatic abnormalities concomitant with the cataract increased permeability of the iridal vessels persisted a year after surgery despite the clinically fair status of the eye.
Subject(s)
Cataract Extraction , Cataract/congenital , Cataract/diagnosis , Fluorescein Angiography , Iris , Lenses, Intraocular , Adolescent , Cataract/epidemiology , Cataract/etiology , Child , Follow-Up Studies , Humans , Iris/blood supply , Microcirculation , Time FactorsABSTRACT
Seventeen patients (17 eyes) with anterior recurrent uveitis, aged 18 to 58, were examined by fluorescent iris angiography before and after surgery, extracapsular cataract extraction with vitrectomy. The findings evidence disordered microcirculation in the iris in anterior recurrent uveitis. The severity of the micro-circulatory shifts depended on the disease standing and the period elapsed since the last uveitis recurrence. Surgical treatment of the condition promoted recovery of the iris angioarchitectonics and the time parameters of the vascular system microcirculation.
Subject(s)
Fluorescein Angiography , Iris , Uveitis, Anterior/surgery , Adolescent , Adult , Cataract Extraction , Humans , Iris/blood supply , Microcirculation , Middle Aged , Postoperative Period , Recurrence , Uveitis, Anterior/diagnosis , VitrectomyABSTRACT
Clinical and angiographic assessment of the status of 28 patients with sclerotic central chorioretinal dystrophy, carried out before and after surgery, has revealed a discrepancy between the improved hemodynamics in the orbital artery and vascular coating and the clinical results of the operation. Analysis of the fluorescent angiograms of the fundus oculi has helped detect the patients with the 'dry' and pseudotumorous forms of the disease, for whom crossing the superficial temporal artery is indicated.
Subject(s)
Choroid Diseases/surgery , Retinal Degeneration/surgery , Temporal Arteries/surgery , Adult , Female , Fluorescein Angiography , Follow-Up Studies , Humans , Male , Middle Aged , Time Factors , Visual Acuity , Visual FieldsABSTRACT
Rheo-ophthalmography has been employed in examinations of the hemodynamics in 42 patients with proliferative diabetic retinopathy, aged 21 to 78; in 16 of these patients with sufficiently transparent media the fundus oculi has been examined by fluorescent angiography. The examinations have revealed an impaired hemodynamic balance, manifesting by a low rheographic coefficient (1.55 +/- 0.12%) and a considerably longer time of the venous circulation (18.8 +/- 0.5 s). Vitrectomy not only removes neovascularization, proliferates, and changed vitreous, but also normalizes the hemodynamic parameters at the expense of shortening the venous system and removing the venous congestion.
