Anterior Chamber Hypopyon Research Articles

Effect of 0.625% Intravitreal Povidone-iodine injections in Patients with Endophthalmitis

Purpose: We report on three patients who received 0.625% povidone-iodine (PVI) intravitreal injections to treat endophthalmitis that did not respond to conventional antibiotic treatment or were inoperable.Case summary: Case 1 was a 42-year-old female with suspected left-eye endophthalmitis that developed after anterior chamber irrigation to treat silicone oil emulsification. A 0.625% PVI intravitreal injection reduced inflammation of the anterior chamber and the vitreous. Case 2 was an 84-year-old male who was blind in the left eye due to glaucoma. He was diagnosed with endogenous endophthalmitis on the basis of the anterior chamber hypopyon and vitreous inflammation. After 0.625% PVI intravitreal injection, the endophthalmitis resolved without any recurrence. Case 3 was a 49-year-old female with suspected endogenous left-eye endophthalmitis attributable to a liver abscess. Despite intravitreal antibiotic injections, the inflammation worsened. A 0.625% PVI intravitreal injection improved both the anterior chamber and vitreous inflammation.Conclusions: Intravitreal 0.625% PVI injection is a useful option when a patient with endophthalmitis is likely to not recover full vision, when surgery cannot be performed, and when there is no response to empirical antibiotics.

Recurrent Candida Parapsilopsis Corneal Ulcer cum Hypopion: A Case Report

Introduction : Candida is common in tropical and subtropical climes estimated for 20-60% of all culture-positive corneal infection. Over the past two-decades, candida parapsilosis has become a common opportunistic fungal pathogen.
 Case Illustration : A-60-years-old-man, came with redness and pain in the left eye since one month ago after working at field. In the left eye, visual acuity was hand movement, palpebra was spasm and oedema, conjunctiva was hyperaemia, hazy, feathery edge and fluorescein test were positive in paracentral corneal 6x7 mm and hypopyon in anterior chamber. KOH staining revealed yeast, corneal scrapping revealed candida parapsilopsis, and antifungal sensitive to fluconazole. Fluconazole intravenous 200mg 2-times-a-day, moxifloxacin eyedrop loading dose, fluconazole eyedrop fortified every-one- hour, atropine 1% eyedrop 2-times-a-day, artificial tears eyedrop every-one-hour was administered.In the fifth-day, hypopyon was improved, and patient was discharged. Tenth-days after, patient felt pain and hypopyon raised 4mm. Debridement in the ulcer, and therapy was continued. Two weeks later, hypopyon was less than 1 mm, and pain was relieved.
 Discussion : There was clinically improvement using antifungal therapy. Recurrent hypopyon was happen, and mechanical debridement in the ulcer was administered. In four-times within two-weeks, hypopyon was improved. Although, initial treatment was antibiotics until microbiological confirmation, antifungal therapy, combined with mechanical eradication of fungal filaments could be administered for fungal corneal ulcer.
 Conclusion : In this case, combination of antifungal therapy with mechanical debridement could be the right choice to treat candida parapsilopsis corneal ulcer. Better outcomes can be achieved and complications can be avoided with appropriate diagnosis and efficient therapy.

Decoding the Rare Diagnostic Enigma of Pythium Insidiosum Keratitis – A Narrative Review

Pythium insidiosum, an oomycete, is frequently referred to as a “parafungus” due to its striking similarity to fungal keratitis. Over the past 10 years, there has been a significant rise in Pythium insidiosum keratitis (PIK) cases, notably in Asia and India. This trend is potentially attributable to heightened research interest in this microorganism and advancements in diagnostic and therapeutic techniques. Clinically, its features, such as subepithelial infiltration, fluffy stromal infiltrates resembling cotton wool, satellite lesions, corneal perforation, endoexudates, and anterior chamber hypopyon, mirror those of fungal infections. However, hallmark clinical features like reticular dots, tentacular extensions, peripheral indentation, and prompt limbal progression distinguish Pythium from other pathogens and necessitate vigilant clinical scrutiny. From a morphological and microbiological perspective, Pythium closely mirrors fungi when subjected to routine smear tests, often revealing perpendicular or obtuse septate or non-septate branching hyphae. Culturing on nutritional media like blood agar, chocolate agar, and so on remains the diagnostic gold standard, with the organism presenting as cream-white colonies that form zoospores. This can be further verified through the leaf incarnation technique. Culture and polymerase chain reaction (PCR) are the gold standard diagnostic modalities for PIK. Historically, due to constraints in diagnostic techniques and the slow growth of cultures, there has been a trend toward employing advanced molecular diagnostic tools, including PCR, confocal microscopy, enzyme-linked immunosorbent assay, and immunodiffusion. When corneal scraping tests (10% KOH, Gram stain) depict fungal-like hyphae, antifungal treatments are often initiated even before culture results are ready. However, recent molecular research recommends the use of antibacterials, specifically 0.2% linezolid and 1% azithromycin, as the primary therapeutic agents. In cases that do not respond to treatment, early therapeutic keratoplasty is advised. This narrative review aims to provide a comprehensive overview of the epidemiology, clinical manifestations, laboratory and molecular diagnostic procedures, and therapeutic approaches for PIK.

Pythium insidiosum keratitis - A review.

Pythium insidiosum is an oomycete and is also called “parafungus” as it closely mimics fungal keratitis. The last decade saw an unprecedented surge in Pythium keratitis cases, especially from Asia and India, probably due to growing research on the microorganism and improved diagnostic and treatment modalities. The clinical features such as subepithelial infiltrate, cotton wool-like fluffy stromal infiltrate, satellite lesions, corneal perforation, endoexudates, and anterior chamber hypopyon closely resemble fungus. The classical clinical features of Pythium that distinguish it from other microorganisms are reticular dots, tentacular projections, peripheral furrowing, and early limbal spread, which require a high index of clinical suspicion. Pythium also exhibits morphological and microbiological resemblance to fungus on routine smearing, revealing perpendicular or obtuse septate or aseptate branching hyphae. Culture on blood agar or any other nutritional agar is the gold standard for diagnosis. It grows as cream-colored white colonies with zoospores formation, further confirmed using the leaf incarnation method. Due to limited laboratory diagnostic modalities and delayed growth on culture, there was a recent shift toward various molecular diagnostic modalities such as polymerase chain reaction, confocal microscopy, ELISA, and immunodiffusion. As corneal scraping (10% KOH, Gram) reveals fungal hyphae, antifungals are started before the culture results are available. Recent in vitro molecular studies have suggested antibacterials as the first-line drugs in the form of 0.2% linezolid and 1% azithromycin. Early therapeutic keratoplasty is warranted in nonresolving cases. This review aims to describe the epidemiology, clinical features, laboratory and molecular diagnosis, and treatment of Pythium insidiosum keratitis.

Acute Infectious Endophthalmitis After Cataract Surgery: Epidemiological Characteristics, Risk Factors and Incidence Trends, 2008-2019.

ObjectiveIntended to investigate the epidemiological characteristics, risk factors and incidence trend of endophthalmitis after cataract surgery in recent 12 years.MethodsA retrospective study was conducted on the patients who underwent cataract surgery in Qingdao Eye Hospital from January 1, 2008, to December 31, 2019, including age, sex, history of diabetes, intraoperative operation and complications. In addition, the related risk factors and incidence trend of acute infective endophthalmitis were analyzed. The incidence of endophthalmitis and its related factors were analyzed by univariate and multivariate logistic regression analysis.ResultsA total of 55,612 cases of cataract surgery were performed in our hospital in 12 years, and 42 cases of acute infective endophthalmitis occurred (the incidence rate was 0.076%). The average occurrence time was 10.57 days ± 11.17, with eye pain as the main complaint and anterior chamber fibrin exudation as the main clinical manifestation. In addition, there were eight cases of anterior chamber hypopyon and 18 cases of vitreous reaction, the results of anterior aqueous humor or vitreous fluid culture in 10 patients were positive. Univariate analysis showed that intraoperative rupture of posterior capsule, non-use of antibiotics and non-use of behind-the-lens washout were the risk factors of infectious endophthalmitis after cataract surgery (P=0.032, P=0.000, P=0.000). Besides, multivariate logistic regression analysis showed that intraoperative rupture of posterior capsule was the main risk factor.ConclusionThe occurrence of endophthalmitis after cataract surgery is mainly related to intraoperative rupture of posterior capsule, absence of antibiotics and behind-the-lens washout. In addition, the incidence of endophthalmitis after cataract surgery decreased during the past 12 years.

Research on the surgery treatment and etiology of fungal endophthalmitis

Objective: To evaluate the efficacy of vitrectomy and etiological diagnosis in the treatment of fungal endophthalmitis. Methods: A retrospective survey was done on the clinical manifestation, etiological diagnosis and treatment efficacy of 15 patients (15 eyes) who had been diagnosed with fungal endophthalmitis at the inpatient department of Peking Union Medical College Hospital during 2002-2015. A total of 15 eyes of 15 patients, 3 male and 12 female patients, were included in this study. The mean age of the patients was (45.8±15.3) years. Among the 15 eyes, 12 (12 patients) were diagnosed with endogenous fungal endophthalmitis and 3 (3 patients) were diagnosed with exogenous fungal endophthalmitis. Fourteen eyes have been misdiagnosed with uveitis, systematic or local application of glucocorticoid and/or immunosuppressor have been conducted on the patients which resulted in exacerbation. Baseline visual acuity: light perception in 2 eyes, hand movement for 12 eyes, and 1 eye of 0.1. Six eyes showed slight inflammatory reaction in anterior chamber, four eyes showed moderate inflammatory reaction in anterior chamber, while five eyes showed severe inflammatory reaction with hypopyon in anterior chamber. B-Scan ultrasound examination showed inflammatory vitreous opacity in all 15 eyes, combined proliferative vitreoretinopathy (PVR) were found in 11 eyes, retinal detachment were found in 10 eyes, which include 6 cases of tractional retinal detachment, 1 case of exudative retinal detachment, and 3 cases of retinal and choroid detachment. Forty eyes underwent vitrectomy, 1 eye underwent intravitreal injection. Nine eyes were processed with silicone oil tamponade, one eye was processed with C(3)F(8) tamponade. At the beginning of the operation, vitreous fluids were collected for preparing smears which were later used for fungus culture and drug susceptibility testing. Results: According to the smear results of vitreous fluid, fungal hyphae and spores were found in 10 eyes. The fungus culture indicated positive results in 12 eyes, including candida albicans in 6 eyes, fusarium, candida parapsilosis, paecilomyces lilacinus, asoergullus terreus, mulan candida and aspergillus in 1 eye respectively. Based on etiological diagnosis, 14 eyes received amphotericin B intraocular injection during operation, and 9 patients received fluconazole (venous transfusion or oral administration), 2 patients received voriconazole through venous transfusion or oral administration, one patient received itraconazole through oral administration. All 15 eyes received local application of amphotericin B eyedrop or fluconazole eyedrop. The intraocular inflammations in all 15 eyes were mitigated. The visual acuity improved in 6 eyes, remained unchanged in 4 eyes, and reduced in 5 eyes. Postoperative visual acuity achieved 0.1 to 0.15 in 2 eyes, 0.01 to 0.04 in 2 eyes, CF in 2 eyes, HM in 4 eyes, LP in 2 eyes, and NLP in 3 eyes. The retina of 5 eyes remained in position, the retina of 2 eyes reattached, the retina of 2 eyes failed to reattach. Recurrent retinal detachment happened in the other 6 eyes, 5 of which received reoperation. Eventually, the retina of 10 eyes reattached, and the retina of the 5 eyes failed to reattach. Conclusions: Vitrectomy is an effective method for treatment of fungal endophthalmitis. The positive rates of vitreous smear and fungus culture were really high. Application of sensitive anti-fungal drugs based on etiological diagnose can improve therapeutic level. (Chin J Ophthalmol, 2018, 54: 270-276).

Unusual Presentation of Fungal Keratitis- Anterior Chamber Granuloma with Necrotising Scleritis: A Case Report

AbstractThis is a rare case of fungal keratitis presenting as anterior chamber granuloma with necrotising scleritis where a 56 year old woman presented with pain, redness, watering, discharge and blurring of vision in right eye for 6 months and on examination was found to have granulomatous exudate with hypopyon in anterior chamber and staphyloma. On treatment with Intracameral and intrastromal voriconazole the symptoms subsided within a week. This treatment modality proved to be helpful in preventing the progression of such a blinding disease and improving the vision.

Hypopyon as the first sign of relapse in acute lymphoblastic leukaemia

Ocular localizations ranging from leukemic retinopathy to involvement of the iris and anterior chamber may be observed as clinical manifestations of acute lymphoblastic leukaemia (ALL). Involvement of the anterior ocular segment is very rare in adult ALL, and is found in less than 1 % of leukaemic relapses [1, 2]. We report a case of leukemic hypopyon, secondary to sedimentation of leukemic blast cells in the ocular anterior chamber, occurring in a 62-year-old woman with T-ALL who was treated with the induction chemotherapy including methotrexate, cytarabine, cyclophosphamide, doxorubicin, vincristine, and dexamethasone, also with a central nervous system (CNS) prophylaxis, and achieved a complete remission. Fourteen months after the first complete remission, while receiving maintenance therapy (mercaptopurine and methotrexate), the patient complained of an ipsilateral reduction of visual acuity on the left associated with changes in head position. Ophthalmic evaluation was performed, showing a leukemic hypopyon with a horizontal fluid level (measuring 3 mm) in the left eye. The patient refused anterior chamber paracentesis. A lumbar puncture revealed CNS relapse with 50 blast cells/lL of cerebrospinal fluid (CSF). The lymphoid blasts were positive for CD7, CD5, CD2, and CD13. Although the patient was treated with intrathecal chemotherapy with methotrexate and cytarabine, and later with liposomal cytarabine, with a clearing of malignant cells from the CSF, a worsening of the anterior chamber hypopyon was noted and the patient required ocular radiotherapy with a transient and partial response. The patient died (7 months after the diagnosis of hypopyon) with ocular, cutaneous, and bone marrow leukemic involvement.

Sustained remission after infliximab in a child with vasculitis refractory to conventional immunosuppressives including interferon-α

We report a 15-year-old Caucasian girl with longstanding sight-threatening bilateral uveitis who did not respond to intensive treatment with corticosteroids, azathioprine, ciclosporin and interferon over months with a progressive deterioration...

Staphylococcus hominis Endophthalmitis Associated With a Capsular Hypopyon

To report a case of Staphylococcus hominis endophthalmitis associated with a capsular hypopyon. Interventional case report. A 51-year-old man presented with chronic postcataract extraction inflammation and underwent vitrectomy, partial capsulectomy, and intravitreal antibiotic injections, followed by explantation of the intraocular lens and capsule. A capsular hypopyon in the absence of an anterior chamber hypopyon was noted. Cultures of the vitreous and capsule revealed Staphylococcus hominis, a coagulase-negative gram-positive organism. We are unaware of previous reports of endophthalmitis caused by Staphylococcus hominis, and could find none in a computerized search using MEDLINE. This case adds Staphylococcus hominis to the list of causative organisms in chronic endophthalmitis and illustrates the rare finding of a capsular hypopyon.

Corneal stromal pseudohypopyon in a pseudophakic patient

Corneal stromal pseudohypopyon is a rare entity. A 65-year-old female developed a suture abscess in her pseudophakic right eye, three years after conventional extra-capsular cataract extraction with posterior chamber intraocular lens implantation. Pusfrom the suture abscess tracked down the corneal stromal layers and formed a pus level leading to the appearance of a corneal intra-stromal pseudo-hypopyon. This case is unique due to its unusual clinical presentation and highlights the fact that corneal pseudo hypopyon may occur without any associated anterior chamber hypopyon or Descemet's detachment.