Wessely-type immune ring following phototherapeutic keratectomy
| Autor: | Ihsan A. Badr, James A. Cameron, Klaus D. Teichmann, Amjad H.S. Rahi, Antonio Huaman |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Adult
Male Reoperation Pathology medicine.medical_specialty Corneal Stroma medicine.medical_treatment Cataract Extraction Photorefractive Keratectomy Cornea Masson's trichrome stain Phototherapeutic keratectomy Corneal Opacity Postoperative Complications Immune system Stroma Biopsy Arthus Reaction Humans Medicine Corneal Scar Wound Healing medicine.diagnostic_test business.industry Sensory Systems Photorefractive keratectomy Ophthalmology medicine.anatomical_structure Lasers Excimer Surgery business Keratoplasty Penetrating |
| Zdroj: | Journal of Cataract and Refractive Surgery. 22:142-146 |
| ISSN: | 0886-3350 |
| Popis: | Immune rings following photorefractive keratectomy (PRK) have been reported but have not been described in detail. This case report describes an immune ring after phototherapeutic keratectomy (PTK) in a patient with long-standing superficial corneal scars. A dense white ring formed in the peripheral cornea on the fourth day following surgery. The patient was treated with antibiotics until negative cultures were reported 48 hours later. A biopsy was taken and examined by light microscopy using hematoxylin-eosin and Mason's trichrome staining. The stroma showed focal keratocyte depopulation with nuclear fragments, occasional polymorphonuclear leucocytes, and an active fibroblastic reaction. No lymphocytes or plasma cells were seen. Clinically, the immune ring faded slowly and was still apparent 9 months after the PTK. Studies of similar cases are required to clarify the mechanisms responsible for this phenomenon. |
| Databáze: | OpenAIRE |
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