This study found that the incidence of BRI was higher in MMC augmented trabeculectomy shortly after the introduction of MMC, but subsequently reduced to a lower level. While many changes in surgical technique had occurred in the intervening period, the most significant change was from limbus-based to fornix-based conjunctival flap. However, the retrospective nature of the study prevents the authors from concluding that there is a causative relationship between changes in surgical technique and BRI.
ObjectiveTo test agreement of two methods to measure intraocular pressure (IOP): rebound tonometry (RBT) and gold standard Goldmann applanation tonometry (GAT) in children with glaucoma.DesignObservational prospective cohort study.SettingTertiary paediatric glaucoma clinic at a single centre.Participants102 individuals attending a paediatric glaucoma clinic, mean (SD) age 11.85 (3.17), of whom 53 were male.Primary and secondary outcome measuresIntraocular pressure, central corneal thickness, child preference for measurement method.ResultsLimits of agreement for intraobserver and interobserver were, respectively, (−2.71, 2.98) mm Hg and (−5.75, 5.97) mm Hg. RBT frequently gave higher readings than GAT and the magnitude of disagreement depend on the level of IOP being assessed. Differences of 10 mm Hg were not uncommon. RBT was the preferred method for 70% of children.ConclusionsThere is poor agreement between RBT and GAT in children with glaucoma. RBT frequently and significantly overestimates IOP. However, ‘normal’ RBT readings are likely to be accurate and may spare children an examination under anaesthesia (EUA). High RBT readings should prompt the practitioner to use another standard method of IOP measurement if possible, or consider the RBT measurement in the context of clinical findings before referring the child to a specialist clinic or considering EUA.
An 11-year-old boy presented with visual acuity reduced to 20/100 in his left eye. Investigations revealed optic disc drusen associated with a minimally classic choroidal neovascular membrane. The patient underwent a 3-month course of intravitreal ranibizumab. Six months of follow-up revealed remarkable visual acuity improvement to 20/20 and complete resolution of exudative maculopathy.
Endophthalmitis following globe perforation with a hypodermic needle EDITOR,-Exogenous endophthalmitis is a common complication of intraocular foreign bodies (IOFBs). 1 It commonly occurs in association with a non-metallic foreign body and often results in profound visual loss. 2 Early diagnosis and treatment with intravitreal antibiotics are essential in its treatment. 3 We describe an unusual case of exogenous endophthalmitis caused by a heroin filled needle, the patient rapidly losing vision despite active intervention. CASE REPORTA 24 year old remand prisoner presented to the casualty department with a vague 2 day history of visual loss in his right eye. He had been stabbed in the eye 2 days previously with a hypodermic needle, which had recently been used for heroin injections.The patient had a visual acuity of hand movement vision in the aVected eye, which was inflamed and had a fibrinoid uveitis. A 3 mm hypopyon was present but a puncture wound was not visible. No fundus view was present. A high reflectivity shadow was seen in the vitreous on B scan ultrasonography ( Fig 1A) and an intraocular hypodermic needle was confirmed on plain x ray ( Fig 1B).The patient underwent a vitreous biopsy and intravitreal ceftazidine 2 mg/0.1 ml, vancomycin 2 mg/ml, and amphotericin B 0.005 mg/ml. The following day, a three port pars plana vitrectomy was performed. Postoperatively, the retina was observed to be detached with two giant retinal tears, one temporally and one nasally. Widespread periphlebitis and retinal necrosis was noted (Fig 2). The broken hypodermic needle was recovered and removed through a corneal incision. Retinal detachment repair was undertaken with heavy liquids, silicone oil, and endolaser photocoagulation. Postoperatively, he was treated with intravenous ciprofloxacin 750 mg twice daily, chloramphenicol eyedrops 1 ⁄2 hourly, atropine eyedrops 1% twice daily, Pred Forte eyedrops (Allergan) 1 ⁄2 hourly, and 40 mg prednisolone orally.The endophthalmitis settled slowly postoperatively, the retina remained flat but vision was reduced to perception of light. The vitreous biopsy grew Streptococcus oralis which was sensitive to chloramphenicol. COMMENTPenetrating eye injuries predominantly occur in young males, and are a common cause of monocular visual loss. 4 5 Endophthalmitis occurs in around 15% of patients with intraocular foreign bodies, the commonest organisms being Staphylococcus epidermidis (23.4%) and mixed organisms (17.3%). The visual prognosis is particularly poor with concurrent infection, 82.3% of patients having no perception of light.The timing of surgery remains contentious. Many authors recommend vitrectomy within 14 days of presentation, particularly if there is retinal detachment. The advantage of intervening before proliferative vitreoretinopathy has develops usually outweighs the universal risk of intraoperative haemorrhage in a recently traumatised globe. In our case endophthalmitis and sight loss developed as a result of Streptococcus oralis contaminated hypodermic needle, whic...
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