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Cornea pannus

Peng Chen, Qingjun Zhou, Junyi Wang, Xiaowen Zhao, Haoyun Duan, Yao Wang, Ting Liu, Lixin Xie
PURPOSE: The objective of this study was to characterize the changes that occur in the cornea during Limbal Stem Cell Deficiency (LSCD) and on the corneal surface after transplantation of ex vivo cultured allogeneic limbal epithelial transplantation (CALET). METHODS: Forty-one pannus were analyzed to characterize the changes found in the cornea in LSCD. Nineteen impression cytology samples, including 14 pannus and five corneal buttons, obtained during subsequent procedures from patients who had undergone CALET were examined to assess the effect of CALET and to determine the long-term fate of donor cells...
September 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
Anja Viestenz, Mona Bischoff-Jung, Achim Langenbucher, Timo Eppig, Berthold Seitz
PURPOSE: Typically, we observe an unintended hyperopic shift after phototherapeutic keratectomy (PTK). Despite a clear optical axis, elevations of the mid-peripheral cornea often lead to remarkable visual impairment in Salzmann nodular degeneration (SND). The aim of this study was to analyze the effect of mechanical pannus removal and PTK on the corneal curvature in SND. METHODS: Fifteen eyes of 10 patients with visual impairment caused by SND were treated with combined pannus removal and PTK using a masking fluid...
June 2016: Cornea
X Y Zhang, Z Q Wang, Y Zhang, X G Sun
OBJECTIVE: To summarize the clinical characteristics, diagnosis, and treatment of blepharokeratoconjunctivitis (BKC). METHODS: Retrospective analysis. One hundred and seventy-two patients were diagnosed as BKC between January 2012 and December 2014 at Beijing Tongren Hospital. The clinical characteristics, the degrees of blepharitis and BKC, and the therapeutic effect were evaluated. RESULTS: The patients were aged from 2 to 78 years (mean, 27±18 years)...
March 2016: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
Nadia Zakaria, Sorcha Ní Dhubhghaill, Michiel Taal, Zwi Berneman, Carina Koppen, Marie-José Tassignon
PURPOSE: Cultivated limbal epithelial stem cell transplantation (CLET) is a surgical approach reserved for severe stem cell deficiency and anterior segment pathology. The recipient cornea typically displays a highly vascularized pannus that must be dissected before graft placement. Extensive pannus dissection, however, can result in corneal thinning and increase the risk of ectasia and ultimately, of perforation. We aimed to examine the value of anterior segment optical coherence tomography (AS-OCT) intraoperatively during pannus resection and long-term postoperative follow-up of CLET surgery...
November 2015: Asia-Pacific Journal of Ophthalmology
K Diongue, A S Sow, M Nguer, M C Seck, M Ndiaye, A S Badiane, J M Ndiaye, N W Ndoye, M A Diallo, A Diop, Y D Ndiaye, B Dieye, A Déme, I M Ndiaye, O Ndir, D Ndiaye
In developing countries where systemic antifungal are often unavailable, treatment of filamentous fungi infection as Fusarium is sometimes very difficult to treat. We report the case of a keratomycosis due to Fusarium oxysporum treated by povidone iodine eye drops and oral fluconazole. The diagnosis of abscess in the cornea was retained after ophthalmological examination for a 28-year-old man with no previous ophthalmological disease, addressed to the Ophthalmological clinic at the University Hospital Le Dantec in Dakar for a left painful red eye with decreased visual acuity lasting for 15 days...
December 2015: Journal de Mycologie Médicale
Shilpa Das, Sayan Basu, Virender Sangwan
One day after molten aluminium had fallen into his right eye, a young man presented to our clinic with a vision of counting fingers at 1 m, conjunctival and corneal epithelial defects, and limbal involvement. He was diagnosed with grade 4 thermal burn and managed medically. Subsequently, the inflammation resolved, however, he developed pannus with conjunctivalisation and scarring of cornea suggestive of partial unilateral limbal stem cell deficiency. He was treated surgically with autologous simple limbal epithelial transplantation (SLET)...
2015: BMJ Case Reports
Chunxiao Wang, Xueying Xia, Feipeng Wang, Shaobi Ye, Shiyou Zhou
PURPOSE: To evaluate the clinical use of optical coherence tomography (OCT) in optimizing surgical treatment strategies for conjunctivalized corneas secondary to ocular burns. METHODS: This noncomparative observational study included 25 patients with stable ocular burns and conjunctivalized corneas. OCT was performed on each eye. The thickness of corneal opacity or pseudopterygium and the underlying healthy stroma were measured. Individual surgical strategies were performed based on clinical examination and OCT images...
October 2015: Cornea
Emilio Pedrotti, Mattia Passilongo, Adriano Fasolo, Mario Nubile, Graziella Parisi, Rodolfo Mastropasqua, Sara Ficial, Marina Bertolin, Enzo Di Iorio, Diego Ponzin, Giorgio Marchini
PURPOSE: To correlate clinical, impression cytologic, and in vivo confocal microscopy findings on the corneal surface after cultured limbal stem cell transplantation. DESIGN: Prospective, interventional, noncomparative, masked case series. PARTICIPANTS: Thirteen patients with limbal stem cell deficiency after unilateral (9 eyes) or bilateral (2 eyes) chemical burn, liquid nitrogen injury (1 eye), or herpes simplex virus infection (1 eye). METHODS: Limbal cells were harvested from healthy or less affected eyes, cultured on 3T3 cells and fibrin glue, and transplanted to the patient's injured eye...
August 2015: Ophthalmology
Elias Chelala, Hala El Rami, Ali Dirani, Henry Fakhoury, Ali Fadlallah
BACKGROUND: Superior limbic keratoconjunctivitis (SLK) is characterized as an inflammation of the superior bulbar conjunctiva with predominant involvement of the superior limbus and adjacent epithelial keratitis. METHODS: A 51-year-old woman, with a history of medically controlled Graves' disease was seen with an extensive SLK involving 5 mm of the superior cornea. RESULTS: Total remission was observed with topical steroids (DXM). Recurrence was observed 1 week after steroid discontinuation, and steroidal treatment was reintroduced with tapering over 1 month...
2015: Clinical Ophthalmology
Alok Sati, Sayan Basu, Virender S Sangwan, Geeta K Vemuganti
BACKGROUND/AIMS: To report the influence of histological features of corneal surface pannus following ocular surface burn on the outcome of cultivated limbal epithelial transplantation (CLET). METHODS: On retrospectively reviewing the medical records of the patients who underwent autologous CLET from April 2002 to June 2012 at L V Prasad Eye Institute, Hyderabad, India, we could trace the histological reports in only 90 records. These 90 records, besides clinical parameters, were reviewed for the influence of various histological features on the final outcome of CLET...
April 2015: British Journal of Ophthalmology
Philip B Meadow, Jacqueline Nguyen, Keerthana Kesavarapu
Purpose. To report a case of a patient with rheumatoid arthritis (RA) treated with tofacitinib citrate. Methods. Observational case report. Results. A 59-year-old patient, with a history of rheumatoid arthritis, on methotrexate 10 mg PO qwk and IV abatacept 750 mg/month, presented with photosensitivity, foreign body sensation, pain, redness, and blurry vision of her right eye (RE). Visual acuity of the RE was 20/200 and 20/20 of the left eye (LE). The slit lamp examination of the RE revealed dryness, 2+ injection of the conjunctiva, and pericentral ulceration of the cornea with 20-30% stromal thinning, pannus, and diffuse punctate epithelial erosions...
2014: Case Reports in Rheumatology
Joginder Pal Chugh, Prachi Jain, Rajeev Sen
To compare the role of fresh and dry preserved amniotic membrane transplantation (AMT) in partial limbal stem cell deficiency (LSCD). 30 Patients of partial LSCD involving <180° of cornea of different age group were divided into 2 groups; group A and B. Clinical diagnosis was made on the basis of presence of conjunctival pannus over cornea and loss of limbal palisades of Vogt. After taking impression cytology from the corneal surface, group A patients underwent conjunctival pannus resection followed by fresh AMT while group B patients underwent dry preserved AMT after resection of pannus...
June 2015: International Ophthalmology
Enas Hassan, Pallavi Deshpande, Frederik Claeyssens, Stephen Rimmer, Sheila MacNeil
The aim of this study was to develop a synthetic hydrogel to act as a corneal substitute capable of selectively supporting the adhesion and proliferation of limbal epithelial cells (LECs) while inhibiting growth of limbal fibroblasts. Deficiency of LECs causes conjunctival epithelial cells to move over the cornea, producing a thick scar pannus. Unilateral defects can be treated using LEC cultured from the unaffected eye, transplanting them to the affected cornea after scar tissue is removed. The underlying wound bed is often damaged, however, hence the need to develop a corneal inlay to aid in corneal re-epithelialization...
July 2014: Acta Biomaterialia
Frederick A Jakobiec, Rebecca C Stacy, Pia R Mendoza, James Chodosh
An exuberant corneal pannus usually develops in adults with a history of surgery or trauma in the anterior central stroma and appears as a glistening, vascularized, moderately elevated, well circumscribed white nodule. We describe a 78-year-old woman with such a pannus, which in the past has typically been referred to as keloidal or hypertrophic. The involved eye had only light perception, and she underwent a penetrating keratoplasty that improved her vision to 20/100. Histopathologic and immunohistochemical evaluations of a the specimen disclosed a reactive spindle cell stromal proliferation of myofibroblasts that were smooth muscle actin positive with a low Ki67 proliferation index...
July 2014: Survey of Ophthalmology
Sunita Chaurasia, Kaustubh Mulay, Muralidhar Ramappa, Virender Sangwan, Somasheila Murthy, Rohini Nair, Geeta Vemuganti
PURPOSE: To report the clinicopathologic features of corneal involvement in patients with xeroderma pigmentosum. DESIGN: Retrospective review of corneal histopathology. METHODS: Thirteen corneal specimens of 11 patients with xeroderma pigmentosum who underwent keratoplasty (lamellar/full-thickness) for corneal involvement were studied. Five-micrometer-thick sections were made from all the samples and stained using hematoxylin-eosin and periodic acid-Schiff stains...
February 2014: American Journal of Ophthalmology
Saeed Akhtar, Turki Almubrad, Iacopo Paladini, Rita Mencucci
PURPOSE: Study to investigate the effects of collagen cross-linking on the ultrastructural organization of the corneal stroma in the human keratoconus cornea (KC). METHODS: Three normal, three keratoconus (KC1, KC2, KC3), and three cross-linked keratoconus (CXL1, CXL2, CXL3) corneas were analyzed. The KC corneas were treated with a riboflavin-ultraviolet A (UVA) treatment (CXL) method described by Wollensak et al. Penetrating keratoplasty (PKP) was performed 6 months after treatment...
2013: Molecular Vision
Ikeda Lal, Bhavik Uttam Panchal, Sayan Basu, Virender S Sangwan
A 20-year-old man from Bangladesh suffered accidental alkali injury to his right eye in May 2010 leading to total limbal stem cell deficiency. An amniotic membrane graft was performed 5 days after the accident and the patient presented to our institute 6 months later. On ocular examination, his best corrected visual acuity (BCVA) was 20/50 with a 360° pannus at the periphery and central area was spared but had stromal scarring. He underwent simple limbal epithelial transplantation (SLET) taking a limbal biopsy from his left eye and was prescribed steroid and antibiotic eye drops postoperatively as per the standard regimen...
2013: BMJ Case Reports
Kunjal Sejpal, Mohammed Hasnat Ali, Savitri Maddileti, Sayan Basu, Muralidhar Ramappa, Ramesh Kekunnaya, Geeta K Vemuganti, Virender S Sangwan
IMPORTANCE: Although several reports are available on the use of conventional and cultured limbal epithelium using various substrates in the treatment of limbal stem cell deficiency (LSCD), the patient populations studied have been largely adults. Thus, to our knowledge, the outcomes of this procedure exclusively in a pediatric population have not been reported previously. OBJECTIVE: To report the outcomes of autologous ex vivo cultivated limbal epithelial transplantation (CLET) in pediatric patients with LSCD after ocular burns...
June 2013: JAMA Ophthalmology
Saeed Akhtar, Omar Kirat, Hind Alkatan, Xinhua Shu, Turki Almubrad
PURPOSE: Pellucid marginal degeneration (PMD) of the cornea is a rare ectatic disorder which typically affects the inferior or superior peripheral cornea in a crescentic fashion. We report histological and ultrastructural features of three PMD corneas. METHODS: The following three patients were diagnosed with PMD corneas: (A) one 41-year-old male, (B) one 56-year-old female, and (C) one 31-year-old male. The patients underwent keratoplasty and the excised corneas were processed for light and electron microscopy to study the ultrastructural features...
April 2013: Microscopy Research and Technique
P Eberwein, T Reinhard
Reconstruction of the ocular surface in patients with limbal stem cell insufficiency (LSI) remains one of the most challenging tasks in ophthalmology. The transplantation of lamellar limbal tissue in total LSI represents an established therapeutic concept, while an abrasion of the conjunctival pannus allowing normal limbal epithelium to recolonize the cornea is the treatment of choice in partial LSI. Surgery must be postponed until an inflammation-free period is reached and lid abnormalities have been corrected...
September 2012: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
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