E M Graham

Intravitreal triamcinolone for uveitic cystoid macular edema: an optical coherence tomography study

PURPOSE To investigate the use of intravitreal injection of triamcinolone acetonide (TA) for the treatment of refractory uveitic cystoid macular edema (CME). DESIGN Prospective, nonrandomized, self-controlled comparative trial. PARTICIPANTS Six patients with chronic CME resistant to treatment with systemic steroids, orbital floor steroids, and cyclosporine A. Three patients were followed for more than 1 year, and the other three for between 3 and 9 months. INTERVENTION Injection of 2 mg of TA into the vitreous cavity. TESTING Optical coherence tomography scanning of the fovea before and after injection and logarithmic minimal angle of resolution visual acuity. MAIN OUTCOME MEASURES Visual acuity, retinal thickness, cystoid space height, and intraocular pressure. RESULTS There was complete anatomic resolution of CME in five of the six cases within 1 week after injection. Cystoid spaces began to return between 6 weeks and 3 months after injection. Two patients with longer term follow-up responded to further orbital floor steroid injection and had no CME 1 year later. One patient had raised intraocular pressure develop, requiring a trabeculectomy. Mean improvement in visual acuity after 12 months was 0.27 (range, 0.14-0.42). CONCLUSIONS Complete anatomic and, to some extent, functional recovery can be induced by intravitreal TA despite long-term refractory inflammatory CME. Optical coherence tomography aids in the management of these cases.

Endogenous bacterial endophthalmitis: a 17-year prospective series and review of 267 reported cases.

Endogenous bacterial endophthalmitis is a rare but serious condition that occurs when bacteria cross the blood-ocular barrier and multiply within the eye. We provide an overview of endogenous bacterial endophthalmitis by reviewing 267 reported cases and integrating this with our experience of an additional 19 cases. The majority of patients with endogenous bacterial endophthalmitis are initially misdiagnosed and many have an underlying disease known to predispose to infection. This condition is often previously undiagnosed. Blood cultures are the most frequent means of establishing the diagnosis. The most common Gram positive organisms are Staphylococcus aureus, group B streptococci, Streptococcus pneumoniae,and Listeria monocytogenes. The most common Gram negative organisms are Klebsiella spp., Escherichia coli, Pseudomonas aeruginosa, and Neisseria meningitidis. Gram negative organisms are responsible for the majority of cases reported from East Asian hospitals, but Gram positive organisms are more common in North America and Europe. The visual outcome is poor with most cases leading to blindness in the affected eye. Many patients have extraocular foci of infection, with an associated mortality rate of 5%. The outcome of endogenous bacterial endophthalmitis has not improved in 55 years and clinicians need to have a high level of awareness of this commonly misdiagnosed condition.

Comparison between optical coherence tomography and fundus fluorescein angiography for the detection of cystoid macular edema in patients with uveitis

PURPOSE To compare optical coherence tomography (OCT) with fundus fluorescein angiography (FFA) for the detection of cystoid macular edema (CME) in patients with uveitis. DESIGN Prospective comparative observational series. PARTICIPANTS One hundred twenty-one eyes of 58 patients with uveitis of varied causes (seven patients were studied twice). TESTING Patients with suspected CME underwent OCT scanning followed by FFA at the same visit. MAIN OUTCOME MEASURES Detection and distribution of macular edema. RESULTS One hundred eight eyes had similar results on both OCT and FFA in that 67 eyes had CME and 41 eyes had no CME. In 10 eyes subretinal fluid was detected on OCT but not FFA. Five of these eyes had CME on FFA but not OCT. Three other eyes had CME that was detected by FFA but not by OCT. Compared with FFA, the OCT sensitivity for detecting CME was 96% (including the eyes with subretinal fluid), and the OCT specificity was 100%. CONCLUSIONS OCT is as effective at detecting CME as is FFA but is superior in demonstrating axial distribution of fluid.

Systemic corticosteroid therapy—side effects and their management

The anti-inflammatory effects of corticosteroids cannot be separated from their metabolic effects as all cells use the same glucocorticoid receptor; therefore when corticosteroids are prescribed measures should be taken to minimise their side effects. Clearly, the chance of significant side effects increases with the dose and duration of treatment and so the minimum dose necessary to control the disease should be given. Before embarking on a long term course of corticosteroids the factors summarised in Table 1 should be considered. A full discussion with the patient is necessary in order to explain the benefits and risks of corticosteroid treatment. A patient information leaflet is now provided by the manufacturers of all systemic corticosteroid preparations. As emphasised by the recent publication by the Committee on the Safety of Medicines, advice to patients is the key to the safe use of long term systemic corticosteroids and it recommends discussing the following points with the patient: not to stop taking corticosteroids suddenly to see a doctor if they become unwell of the increased susceptibility to infections, especially chickenpox of the serious side effects that may occur to read and keep the patient information leaflet to always carry the steroid treatment card and to show it to any health professional involved in their treatment. In addition the following suggestions may help to minimise some side effects: a single morning dose early dietary modification--low calorie, low sodium, and high potassium awareness of possible errors of judgment on high doses. Once started on corticosteroids the patient should be regularly reviewed to assess the response to the treatment with adjustments to keep the dose at a minimum.

An evaluation of baseline risk factors predicting severity in juvenile idiopathic arthritis associated uveitis and other chronic anterior uveitis in early childhood

Background/aims: The clinical course for childhood chronic anterior uveitis can vary from mild, self limiting disease to bilateral blindness. The purpose of this study was to identify those risk factors at onset that predict disease severity. Methods: A retrospective case note review of all patients with painless anterior uveitis diagnosed from 1982 to 1998. Patients were divided into two cohorts based on route of referral, diagnosis, and compliance with treatment. The standard cohort consisted of only those diagnosed from routine screening of juvenile idiopathic arthritis. Results: Complications—cataract surgery, ocular hypertension treatment, and visual acuity <6/24. Remission: inactive uveitis on no topical treatment for >6 months. Results—163 patients were included. 34 patients (21%) developed at least one complication. The most significant predictor of complications was severe disease at onset (p = 0.001). Other factors included uveitis at the first examination (p = 0.034), membership of the non-standard cohort (p = 0.0001), non-oligoarticular disease (p = 0.02), and late onset arthritis (p = 0.024). Male sex was associated with increased complications in the standard cohort (p = 0.001). Factors predisposing to remission included membership of the standard cohort (p = 0.003), onset after 1990 (p = 0.016), white race (p = 0.015), mild disease onset (p = 0.003), and a long gap between arthritis and uveitis onset (p = 0.015). Conclusions: It is possible to characterise the severity of those with childhood chronic anterior uveitis at the onset of disease. The majority of patients remit without visually disabling complications. It may be possible to reduce the complication rate by targeting aggressive immunosuppression on high risk patients before complications develop.

Visual loss associated with pediatric uveitis in English primary and referral Centers

PURPOSE Pediatric uveitis is rare and has been reported to cause increased rates of visual loss compared with adult patients. The reasons for this are unclear. Only one study has been population-based, so the effect of referral bias is not known. We examined the pattern of disease in primary and referral centers to establish the unique characteristics of uveitis in children. DESIGN Case control study. METHODS Retrospective, multicenter, observational study of uveitis starting before the age of 20 years. Two hundred forty-nine patients were recruited from three primary and two referral ophthalmic units. Age-related differences in types of uveitis and systemic disease between hospitals were characterized, as were associations with visual loss. RESULTS The incidence of uveitis in district hospitals at less than 16 years of age was 4.9/100,000: the most frequent diagnosis was idiopathic uveitis (78%). In referral cohorts the most frequent diagnosis was juvenile idiopathic arthritis-associated uveitis (67%). Other systemic diseases were rare. The most frequent type of uveitis at 0 to 7 years of age was chronic anterior uveitis, posterior uveitis in 8- to 15-year-olds, and acute anterior uveitis in 16- to 19-year-olds. Visual loss (any eye < 6/12) occurred in 17% and was not associated with age, sex, or hospital cohort. It was most frequent in posterior uveitis (25%). Treatment variables were independent predictors of visual loss: systemic treatment 2.2 (1.1- 4.6), surgical intervention 8.2 (3.8-17.6). CONCLUSIONS Idiopathic uveitis was three times more common in district hospitals. Visual loss was similar to adult uveitis in this study. The increased frequency of severe chronic anterior uveitis in children aged 0 to 7 years and posterior uveitis in older children aged 8 to 15 years accounts for the rate of visual loss seen in previous studies.

Choroidal hypoperfusion in acute posterior multifocal placoid pigment epitheliopathy. An indocyanine green angiography study.

BACKGROUND The pathogenesis of acute posterior multifocal placoid pigment epitheliopathy remains obscure. The placoid lesions and characteristic findings on fluorescein angiography have been interpreted as representing either primary disease of the retinal pigment epithelium or disease of the choroidal vasculature. This study used indocyanine green (ICG) choroidal videoangiography to investigate this controversy. METHODS Sequential choroidal videoangiography was performed with ICG and a scanning laser ophthalmoscope on patients with acute posterior multifocal placoid pigment epitheliopathy. Image analysis was used to differentiate between masking and ischemia as to the cause of hypofluorescence on the angiograms. RESULTS Indocyanine green angiograms of acute posterior multifocal placoid pigment epitheliopathy showed areas of hypofluorescence in both the early and late pictures that correlated with the placoid lesions. Image analysis identified these as areas of choroidal hypoperfusion. Successive films showed partial or complete resolution of these hypofluorescent areas. CONCLUSIONS Indocyanine green choroidal videoangiography has shown choroidal hypoperfusion to underlie the pathogenesis of acute posterior multifocal placoid pigment epitheliopathy.

Ocular changes in limited forms of Wegener's granulomatosis.

Eight patients who had limited forms of Wegeners granulomatosis are described, with details of their pathology. Ocular pathological data were available for 2 of them. The condition carries a serious ocular risk; useful vision was lost in 6 out of 16 eyes (37%). An indolent but slowly progressive marginal keratitis and scleritis was a prominent feature in 4 patients and was helpful in suggesting the diagnosis. Limited froms of Wegeners granulomatosis carry a better prognosis and response to treatment than the classical disease.

Factors related to severe uveitis at diagnosis in children with juvenile idiopathic arthritis in a screening program.

PURPOSE To identify factors associated with severe uveitis at diagnosis of eye disease in children with juvenile idiopathic arthritis (JIA) who were observed in a screening program, and to identify temporal changes in findings associated with screening during the period 1986 to 2000. DESIGN Case control study. METHOD Uveitis was defined as being severe at diagnosis if there were associated synechiae, cataracts, or retinal edema. Clinical factors for all patients undergoing screening for JIA-associated uveitis from 1986 to 2000 at one institution were studied retrospectively. Children with severe uveitis at diagnosis (cases) were compared with those with mild uveitis at diagnosis and those who never developed uveitis during follow-up in the screening program (controls). RESULTS Severe uveitis was present at diagnosis in 22 (5.4%) of 409 patients. Male patients were more likely to have severe uveitis at diagnosis (odds ratio [OR] 3.7 [95% confidence interval 1.3 to 10.7], P =.014). A longer interval from the onset of arthritis symptoms to the diagnosis of uveitis was associated with a reduced risk of severe uveitis at diagnosis (OR 0.95 [0.91 to 1.0], P =.044). There was no difference in the frequency of severe uveitis at diagnosis between two screening periods: 1986 to 1993 (before American screening guidelines were published) and 1994 to 2000. CONCLUSIONS Male children are more likely than female children to have severe uveitis at diagnosis. The proportion of children with severe uveitis at diagnosis has not changed since current screening guidelines have been widely publicized, suggesting the need for refinements in screening procedures to target high-risk children with increased surveillance.

Cerebral and Retinal Vascular Changes in Systemic Lupus Erythematosus

A 16-year-old white boy with acute systemic lupus erythematosus (SLE) who presented with chorea and florid retinopathy died in renal failure three months after diagnosis. Pathological studies revealed two types of lesion in both the cerebral and ocular vessels. Some meningeal and choroidal vessels showed a typical vasculitis with fibrinoid necrosis, whereas other meningeal and retinal vessels were occluded by amorphous hyaline material in the absence of vasculitis.