Fermentor growth of Bacteroides fragilis under controlled conditions in a complex medium containing 1% glucose and 10% fetal calf serum resulted in high yields of bacteria. After hot phenol-water extraction of the organisms, capsular polysaccharide was isolated from the aqueous phase and purified by Sephacryl S-300 chromatography in a buffer with 3% sodium deoxycholate. Lipopolysaccharide was i...

Lancefield et al. (1) have clearly demonstrated that the capsular polysaccharides of group B streptococci are antigenic and that the antibodies are protective in mice except with type III, where no mouse-virulent strain is available. However, a chicken embryo model has been established for type III and the antibody found to be specifically protective (2). Recently, emphasis has been centered on...

AIM To determine whether anterior capsule polishing during cataract surgery done by phacoemulsification has any effect on the rate of posterior capsule opacification. MATERIALS AND METHODS We conducted a 3 year retrospective analytical study at our hospital. The medical records of patients who underwent cataract extraction by phacoemulsification with foldable square edge hydrophilic PCIOL bet...

Materials and Methods: Sixty patients undergoing cataract surgery (thirty eyes using phacoemulsicification and thirty eyes with extra capsular cataract extraction technique) were included in the study. All patients received topical anesthesia with proparacain (Alcain) eye drops combined with sponge socked in Alcain eye drops in superior conjuctival sac, which remained there till the end of surg...

Cataract surgery in an eye with absent or weak zonules presents unique challenges for the anterior segment surgeon. With the introduction of the capsular tension ring (CTR), and its several modified versions, the ability to perform safe cataract extraction with the implantation of a stable and well-centered intraocular lens (IOL) within the capsular bag has increased substantially. In order to ...

A case of posterior lens capsular abscess occurring many months after an extracapsular cataract extraction is presented. This was caused by a mixed infection involving Propionibacterium acnes and Staphylococcus epidermidis. The significance of Staph epidermidis after such a long postoperative period is uncertain, but the case shows features typical of secondary endophthalmitis due to P acnes, i...

Posterior chamber intraocular lens (PC-IOL) subluxation is uncommon but represents one of the most serious complications following phacoemulsification. Late spontaneous IOL-capsular bag complex dislocation is defined as occurring three months or later following cataract surgery. Unlike early IOL dislocation, late spontaneous IOL dislocation is due to a progressive zonular dehiscence and contrac...

PURPOSE To investigate the optimal strategy for surgical management of traumatic cataract with posterior capsular rupture. METHODS We describe four cases of traumatic cataract with posterior capsular rupture and an in vitro model built to evaluate the optimal infusion pressure during surgery. RESULTS All patients underwent cataract surgery. By using an anterior chamber maintainer to elevate...

Pasteurella multocida is known as one of the main organisms causing pneumonia in sheep. As immunity in pasteurellosis is serogroup specific, identification of prevalent capsular group among endemic areas is essential. The aim of this study was to molecular identification and determine of the capsular type of the P. multocida strains isolated from sheep pneumonia in Iran. Bacteriological and bio...

BEFORE the introduction of enzymatic zonulysis by Joaquin Barraquer (1958), the normal procedure of senile lens extraction was either by intraor extra-capsular extraction, or, more recently, by the use of the erisophake. This latter operation can be done with much greater facility by the use of the enzyme, as has been demonstrated by Barraquer (1958), Cogan (1958), and Cogan, Symons, and Gibbs ...