Toxoplasma gondii detection by nested polymerase chain reaction in lens aspirate and peripheral blood leukocyte in congenital cataract patients: the first report from a tertiary eye hospital in India.
ABSTRACT To detect T. gondii DNA and specific antibodies in lens aspirates (LA) and peripheral blood leucocytes (PBL) of congenital cataract patients.
ELISA for T. gondii antibodies on sera nPCR for T. gondii DNA (B1 gene) on LA and PBL were performed for 52 patients.
T. gondii DNA was detected in 29 (55.8%) of the 52 patients (LA-14, PBL-13, LA and PBL-2, and specific IgM in 2 sera). nPCR in PBL was more sensitive than ELISA (p<0.005).
nPCR is a sensitive technique to detect T. gondii from LA and PBL in congenital cataract patients.
Ocular immunology and inflammation 08/2011; 19(5):363-6. DOI:10.3109/09273948.2011.592259 · 1.44 Impact Factor
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ABSTRACT: PURPOSE: To report the clinical features of cataracts in eyes with ocular toxocariasis. SETTING: Department of Ophthalmology, Seoul National University Bundang Hosptal, Seongnam, South Korea. DESIGN: Retrospective observational case series. METHODS: The clinical diagnosis of ocular toxocariasis was based on the following characteristic features: retinal granuloma with or without ocular inflammation and positive results in serum antibody enzyme-linked immunosorbent assay. Patients younger than 60 years who presented with a unilateral cataract and were diagnosed with ocular toxocariasis between January 2009 and January 2012 were included. Demographic and ocular examination data for all patients showing atypical cataract features were collected. All cataracts were documented with anterior segment photography. RESULTS: Seven of 83 patients (8.4%) presented with an atypical cataract in the eye with ocular toxocariasis only. The mean patient age was 49.7 years ± 8.3 (SD) (range 38 to 59 years). All patients had small, round, white lens opacities resembling retinal granulomas. The granuloma-like opacities were located primarily in the lens midperiphery and in the subcapsular level. The lens opacity migrated in 1 patient. CONCLUSIONS: Ocular toxocariasis can cause a cataract with distinctive clinical features. These cataracts show a granuloma-like opacity primarily in the posterior subcapsular level; the opacity can migrate. FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.Journal of Cataract and Refractive Surgery 03/2013; DOI:10.1016/j.jcrs.2012.12.033 · 2.55 Impact Factor
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ABSTRACT: Cataract is a significant cause of visual disability in the pediatric population worldwide and can significantly impact the neurobiological development of a child. Early diagnosis and prompt surgical intervention is critical to prevent irreversible amblyopia. Thorough ocular evaluation, including the onset, duration, and morphology of a cataract, is essential to determine the timing for surgical intervention. Detailed assessment of the general health of the child, preferably in conjunction with a pediatrician, is helpful to rule out any associated systemic condition. Although pediatric cataracts have a diverse etiology, with the majority being idiopathic, genetic counseling and molecular testing should be undertaken with the help of a genetic counselor and/or geneticist in cases of hereditary cataracts. Advancement in surgical techniques and methods of optical rehabilitation has substantially improved the functional and anatomic outcomes of pediatric cataract surgeries in recent years. However, the phenomenon of refractive growth and the process of emmetropization have continued to puzzle pediatric ophthalmologists and highlight the need for future prospective studies. Posterior capsule opacification and secondary glaucoma are still the major postoperative complications necessitating long-term surveillance in children undergoing cataract surgery early in life. Successful management of pediatric cataracts depends on individualized care and experienced teamwork. We reviewed the etiology, preoperative evaluation including biometry, choice of intraocular lens, surgical techniques, and recent developments in the field of childhood cataract.Clinical ophthalmology (Auckland, N.Z.) 01/2015; 9:77-90. DOI:10.2147/OPTH.S59009