ABSTRACT
PURPOSE: An increase in corneal temperature has been implicated in subepithelial haze after surface photorefractive keratectomy. We aimed to determine if cooling the cornea by means of hydration between ablations and immediately after final surface ablation in PRK reduces haze. METHODS: One hundred five eyes of 61 patients with myopia ranging from -6.00 to -9.75 D were included. One of the surgeons irrigated with cool balanced salt solution between ablation passes and immediately at the end of the surface ablation while two others did not. Results of haze grading were analyzed at the end of 3 and 6 months and 1 year after PRK by an independent examiner. RESULTS: Haze was significantly reduced in those eyes in which irrigation (cooling) with balanced salt solution was performed intraoperatively and immediately after ablation. CONCLUSION: Cooling and rehydration of the cornea with chilled balanced salt solution between passes during PRK significantly reduces haze in patients with baseline myopia between -6.00 and -9.75 D.
Subject(s)
Cornea/surgery , Corneal Opacity/prevention & control , Fluid Therapy , Hypothermia, Induced , Myopia/surgery , Photorefractive Keratectomy/methods , Adult , Body Temperature , Corneal Opacity/pathology , Follow-Up Studies , Humans , Lasers, Excimer , Middle Aged , Retrospective Studies , Treatment OutcomeABSTRACT
PURPOSE: To determine whether removing the corneal epithelium by dilute alcohol is equal to other epithelial removal techniques. SETTING: The Bochner Eye Institute, Toronto, Ontario, Canada. METHODS: Epithelium was removed using 25% alcohol placed on a circular pledget; the alcohol remained on the cornea for 3 minutes. Irrigation was performed with cold balanced salt solution. The epithelium was then lifted with forceps and removed. Ninety-one eyes having photorefractive keratectomy for low myopia (less than 8.00 diopters) were treated; 41 eyes were followed between 4 and 10 months (mean 6 months). Complications such as haze and loss of best corrected visual acuity (BCVA) were recorded. RESULTS: All alcohol-treated eyes achieved a BCVA of 20/40 or better, 65.9% had 20/20 and 92.7%, 20/25 or better. There were no complications or adverse effects. CONCLUSIONS: Epithelial removal using 25% alcohol did not adversely affect the algorithms used with the VISX 20/20 excimer laser, indicating the technique is safe, predictable, and effective. There was no significant loss of BCVA, toxic effects, or stromal hydration.
Subject(s)
Debridement/methods , Epithelium, Corneal/surgery , Ethanol/administration & dosage , Photorefractive Keratectomy , Solvents/administration & dosage , Adult , Cornea/surgery , Epithelium, Corneal/drug effects , Female , Humans , Lasers, Excimer , Male , Middle Aged , Myopia/surgery , Treatment Outcome , Visual AcuityABSTRACT
Powdered and powder-free gloves were compared during ophthalmic surgery. It was found that powder may reappear on well-rinsed gloves by the end of intraocular surgery and be implanted inadvertently into the eye or in the stromal interface during laser in situ keratomileusis. Powder-free gloves, therefore, make surgery significantly safer.
Subject(s)
Cornea/surgery , Gloves, Surgical , Talc , Gloves, Surgical/adverse effects , Granuloma, Foreign-Body/etiology , Granuloma, Foreign-Body/prevention & control , Humans , Microscopy, Electron, Scanning , Safety , Talc/adverse effectsSubject(s)
Cornea/surgery , Pain, Postoperative/drug therapy , Refractive Surgical Procedures , Cyclooxygenase Inhibitors/therapeutic use , Dexamethasone/therapeutic use , Drug Combinations , Drug Therapy, Combination , Humans , Ketorolac Tromethamine , Laser Therapy , Ophthalmic Solutions , Pain Measurement , Pain, Postoperative/physiopathology , Premedication , Prospective Studies , Tobramycin/therapeutic use , Tolmetin/analogs & derivatives , Tolmetin/therapeutic use , Tromethamine/therapeutic useABSTRACT
Any needle passing through a rubber stopper can aspirate a core of rubber. This rubber may then be injected into the eye or into the retrobulbar or peribulbar space. Aspirates from a number of syringes were spun down in a centrifuge and examined for microscopic particles. All specimens contained microscopic particles even from half-used bottles of Xylocaine.
Subject(s)
Cataract Extraction , Eye Foreign Bodies/etiology , Injections/adverse effects , Needles , Drug Packaging , Humans , Lidocaine , RubberSubject(s)
Contact Lenses , Presbyopia/therapy , Contact Lenses/classification , Eyeglasses , Humans , Patients , Vision, MonocularABSTRACT
Although presbyopes represent a large and growing fraction of the population, only 2% of them have tried bifocal contact lens correction. Bifocal contact lenses have in the past been notorious for the chair time they required and for low success rates. But now the picture is beginning to change. The growing number of new and innovative lens designs is expanding the fitter's options and greatly increasing the chances of success. Success, however, depends on the fitter being able to select an appropriate lens for each patient. This paper reviews contact lens options available for presbyopic patients and discusses the patients for whom specific lens designs are most advantageous.
Subject(s)
Contact Lenses , Presbyopia/therapy , Humans , Methods , Optics and Photonics , Vision ScreeningABSTRACT
A nomogram for fitting fluorosilicone acrylate contact lenses is presented. Using this nomogram to fit 814 patients (1,578 eyes), we obtained a first-fit success rate of 90%.
Subject(s)
Acrylates , Contact Lenses , Silicones , Humans , Refractive Errors/therapyABSTRACT
Results of a multicentre, controlled, comparative study of two daily care regimens for rigid gas-permeable contact lenses are described. Whereas both regimens were generally effective and safe for the 69 patients wearing the Boston Lens, the Barnes-Hind regimen showed clinically and statistically significant advantages over the Boston Lens regimen: the proportions of patients in the Barnes-Hind group with corneal staining or palpebral conjunctival injection were reduced during the study and were lower on several occasions than the proportions of the Boston group.
Subject(s)
Contact Lenses , Detergents , Ophthalmic Solutions , Surface-Active Agents , Clinical Trials as Topic , Conjunctiva/drug effects , Consumer Behavior , Cornea/drug effects , Detergents/adverse effects , Female , Humans , In Vitro Techniques , Ophthalmic Solutions/adverse effects , Surface-Active Agents/adverse effects , Visual AcuityABSTRACT
In November 1982 146 persons became ill within a few days with trichinosis in Bitburg (GFR). Prompt epidemiological and immunodiagnostic investigations demonstrated the high likelihood of infection by ingestion of raw sausage produced at a butcher's near Bitburg. The diagnosis of trichinosis could be ascertained still in the acute phase of disease by demonstration of the Trichinella larvae in peripheral blood. Retrospective analysis of earlier disease from the same area showed that the same infection source had led to a smaller epidemic already in August/September of 1982. This investigation confirms that epidemic trichinosis may occur in the GFR despite law-enforced assessment of meat for Trichinella. However, by combination of epidemiological and immunodiagnostic methods the mode and source of infection can be established promptly and reliably.
Subject(s)
Disease Outbreaks/epidemiology , Trichinellosis/epidemiology , Germany, West , Humans , Meat Products/adverse effects , Retrospective Studies , Seasons , Trichinellosis/diagnosis , Trichinellosis/etiologySubject(s)
Disease Outbreaks/epidemiology , Trichinellosis/epidemiology , Adolescent , Adult , Aged , Animals , Child , Child, Preschool , Female , Food Contamination , Germany, West , Humans , Male , Meat , Middle Aged , Swine , Trichinellosis/etiologySubject(s)
Aphakia, Postcataract/therapy , Contact Lenses , Eyeglasses , Lenses, Intraocular , Adult , Age Factors , Aged , Contact Lenses, Hydrophilic/adverse effects , Female , Humans , Male , Middle Aged , Time FactorsABSTRACT
A 30-year-old man with progressive dysphagia and pain on alcohol ingestion was shown to have a mass lesion confined to the esophageal wall. The mass proved to be Hodgkin's disease. It was treated by surgical excision and radiotherapy and the patient remains well, five years after onset. While Hodgkin's disease presenting in the esophagus is rare, it warrants inclusion in the differential diagnosis of esophageal mass lesions.