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Query: UMLS:C0086543 (cataract)
 29,165 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Four cases of epithelial downgrowth following cataract surgery were studied by electron microscopy. The invading epithelium was excised by posterior keratectomy, iridectomy, and vitrectomy. Diagnostic photocoagulation on the iris was performed before the operations in all cases. Multilayered epithelium on these tissues showed ultrastructural features similar to conjunctival epithelium, and in the cornea no intact endothelial cells were identified. A subepithelial connective tissue of varying grades of development was present between the downgrowth epithelium and Descemet's membrane. The basal epithelial cells on the vitreous contained numerous dense granules, and a thick basement membrane-like layer was found underneath. Changes attributable to photocoagulation included partial replacement of the iris pigment epithelium with macrophages, degeneration of blood vessels, and marked swelling and dissociation of collagen fibrils in the iris stroma due to splitting into longitudinal filamentous components. Identical changes of collagen fibrils could be reproduced in the rabbits iris after experimental photocoagulation.
Ann Ophthalmol 1977 Sep
PMID:Electron microscopy of epithelial downgrowth. 90 Jul 28

Gauge 7-0 DEXON polyglycolic acid sutures were used in 25 cataract extractions. The suture material handled well, formed small knots, and gave excellent results in all cases. The fine gauge suture is well suited for use in intraocular surgery.
Ann Ophthalmol 1977 Sep
PMID:Evaluation of DEXON suture in cataract surgery: a study using a finer gauge material. 90 Jul 36

The employment of the intraocular lens is an acceptable procedure in selected cases. It has great optical and practical advantages over conventional treatment. In the evaluation of suitable cases, clinical considerations, indications and contraindications are of major importance. The extraction of the opaque cataractous lens from the human eye is an eternally new, ever exciting operation which always has challenged the skill of the ophthalmic surgeon. It is not easy and it always involves a risk. The additional demands of technique incurrent in the insertion of the intraocular pupillary lens render the operation still more difficult and increase the risks. The results presented and the advantages achieved justify, in my opinion, the use of an intraocular lens in selected cases of cataract extraction.
Klin Monbl Augenheilkd 1977 Sep
PMID:[Twenty-two year's experience with intraocular lenses (author's transl)]. 92 37

A report of 3 cases is given. Following a photocoagulation because of a retinal tear a rapidly maturing cataract developed. The same occured in a patient after treatment with equatorial transconjunctival cryotherapy (according to Haut) because of dense vitreous turbidities. Though the vitreous cleared, 6 weeks after surgery a mature cataract had developed which had to be removed. In the third case a peripheral retinal hole was surrounded by dryo applications. 6 weeks later a severe proliferative macular detachment developed. Brief case reports and a discussion follow.
Klin Monbl Augenheilkd 1977 Sep
PMID:[Complications after photocoagulation and cryotherapy (author's transl)]. 92 38

This study reports on the favourable influence of lens extraction alone on intraocular pressure levels in different kinds of glaucoma (wide angle, angleclosure, secondary). Out of 2000 eyes undergoing cataract surgery 162 had medically treated glaucoma prior to surgery. Follow-up examinations of the intraocular pressure could be carried out in 118 eyes over a year. There resulted from this study no certain indications for a combined operation, whose value is discussed.
Klin Monbl Augenheilkd 1977 Sep
PMID:[Cataract operations and glaucoma - a study (author's transl)]. 92 39

In 8 patients rupture of nylon sutures in the cornea occurred spontaneously. This happened four times after a corneal cataract extraction, three times after a perforating keratoplasty and once after a perforating corneal injury. The rupture appeared three times 6 1/2 to 7 months after the operation, once after 1 1/2 months. In the other 4 cases the time of rupture is not known. The examination of the nylon sutures with a microscope showed a lamellar-concentric reduction in the straight parts of the sutures and superficial and deep sagittal in the curved parts of the sutures.
Klin Monbl Augenheilkd 1977 Sep
PMID:[Spontaneous rupture of nylon sutures in the cornea spontaneously (author's transl)]. 92 42

I have discussed five aspects of lens metabolism and their possible relationship to cataract in man, and this has left me with five fundamental questions to be answered. 1. Are the fluorescent tryptophan derivatives, found only in the lens of man and higher primates, involved in the development of brown nuclear cataract? 2. Is naphthalene cataract in rabbits a model for any type of cataract in man--i.e., are quinones ever formed in the human eye? 3. Is diabetes the only cataract in which osmotic swelling is important? 4. Does self-digestion of protein in the human lens contribute to cataract development? 5. Are the consequences of the abnormal maturation of lens fibers, which occurs in tryptophan deficiency cataract in rats, ever seen in man?
Invest Ophthalmol Vis Sci 1976 Sep
PMID:Experimental studies on cataract. 96 16

The present study tested the assertion that there exists exclusively in persons with senile cataracts a serum factor capable of precipitating with gamma crystallin extract from bovine lens. The results of this work do not support this assertion without the imposition of rigid specifications regarding test solution concentrations and observation time. Among the 84 subjects tested, 2 individuals had posterior subcapsular cataracts. The precipitates resulting from incubation with serum from these individuals were similar to those resulting from incubations with serum from senile cataract patients. The present study did not confirm the existence of exclusive serum factors capable of precipitating with gamma crystallin extract in patients with senile cataracts.
Ann Ophthalmol 1976 Sep
PMID:Serum factors precipitating with bovine lens extract in cataract patients and noncataract patients. 97 Aug 59

The visual results, stereopsis, and complications have been assessed on 50 patients in a presenile age group treated for uniocular aphakia. Twenty-five patients received a Binkhorst four-loop lens implant at the time of cataract surgery and 25 were offered a conventional hard contact lens trial postoperatively. The period of follow-up ranged from one to three years.
Br J Ophthalmol 1976 Sep
PMID:Treatment of uniocular aphakia. A comparison of iris clip lenses with hard corneal contact lenses. 99 Feb 34

Slit-lamp examination of the lens of 80 normal controls aged between 17 and 36 years has shown that the opacities are very common (91.5%). The total opacities count (TOC) varies between 0 and 109, with a mean value of 14.65 and a standard deviation of 18.43. The study of 10 families of myotonic dystrophy supports the value of such a test in early diagnosis of this condition. The value of the TOC in carrier detection of Lowe's syndrome and in the diagnosis of "formes frustes" of hereditary cataract is discussed. The possible application of this test in genetic counselling is stressed.
J Genet Hum 1976 Sep
PMID:[The importance of biomicroscopic examination of the lens in the detection of heterozygotes for certain hereditary diseases, in particular, myotonic dystrophy]. 100 75


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