ABSTRACT
La transparencia comeal es producto de un complejo sistema de interacciones. El conocimiento de estas es muy importante para establecer una terapia adecuada para patologías tan diversas como son la disfunción lagrimal, el haze comeal post PRK, y el rechazo comeal. La conjuntiva y el epitelio comeal indemnes son imprescindibles para mantener la función del sistema ocular. A su vez la integridad de estas estructuras depende de la integridad de párpados y lágrimas. Actualmente sabemos que la interacción entre estos cuatro componentes permite mantener en equilibrio la homeostasis de la superficie ocular. Asegurando la indemnidad de las células progenitoras límbicas. La alteración en cualquiera de estos factores produce ojo rojo, infecciones, mayor predisposición a úlceras, y alteraciones de la epitelización. Desequilibrios en el funcionamiento de este sistema se engloban hoy como enfermedades de la superficie ocular, y están dando origen a una nueva subespecialidad. Ya que los avances en el conocimiento de la fisiopatología de la lagrima y de su interacción con la come a, han permitido el desarrollo de una mirada más racional de la patología de este segmento creemos interesante revisar este conjunto de desordenes y proponer una aproximación terapéutica.
Comeal transparency is own to a complex system of interactions. Settle the right therapeutic approach in quite different pathologies as comeal haze, comeal rejection and tears disfunction, is related with the knowledge ofthese relationships. Comeal and conjunctival epithelium integrity is essential in ocular system function, as lids and tears . Nowadays we know that reciprocal relations between this items are essential in ocular surface homeostasis. Any disruption means the rise of redness, infections, ulcers predisposition, and disruptions in epithelization. Today all this malfunctions are known as Ocular Surface Pathologies rising a new subspeciality. Since new advances in tears physiology allows a rational approach to diagnosis and treatment ,we find useful to list out this disorders and proposing a therapeutic schedule.
Subject(s)
Humans , Eye Diseases/physiopathology , Eye Diseases/therapy , Anti-Bacterial Agents/therapeutic use , Anti-Inflammatory Agents/therapeutic use , Blood Platelets , Conjunctival Diseases/physiopathology , Conjunctival Diseases/therapy , Corneal Diseases/physiopathology , Corneal Diseases/therapy , Eyelid Diseases/physiopathology , Eyelid Diseases/therapy , Lacrimal Apparatus Diseases/physiopathology , Lacrimal Apparatus Diseases/therapy , Homeostasis , Serum , Blood Transfusion, Autologous/methodsABSTRACT
OBJECTIVE: To study the efficacy of amniotic membrane transplantation in various indications for ocular surface reconstruction. METHOD: Amniotic membrane transplantations were performed in 140 eyes (130 patients) for ocular surface reconstruction. The indications for the corneal group were limbal stem cell deficiency, bullous keratopathy, persistent epithelial defect, band keratopathy, prosthesis, corneal ulcer and acute chemical burn. The indications for the conjunctival group were grafts for pterygium, conjunctival tumors, symblepharon, and covering the scleral graft. RESULTS: Success was noted in 75.7 per cent (106/140) eyes, partial success in 17.9 per cent (25/140) eyes, and failure in 6.4 per cent (9/140) eyes for a mean follow-up of 6.6 months (1-19 months). The success and partial success rate were 80.6 per cent (54/67), 14.9 per cent (10/67) in the corneal group and 71.2 per cent (52/73), 20.6 per cent (15/73) in the conjunctival group. CONCLUSION: Amniotic membrane transplantation can solve some difficult ocular surface problems, and can be used to promote epithelial healing, reduce inflammation and scarring.
Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Amnion/transplantation , Child , Child, Preschool , Conjunctival Diseases/physiopathology , Corneal Diseases/physiopathology , Female , Humans , Male , Middle Aged , Postoperative Complications , Treatment Outcome , Wound Healing/physiologyABSTRACT
Leptospirosis was confirmed by Microscopic Agglutination Test (MAT) and/or ELISA in 57 patients admitted to the Government General Hospital, Madras, India, during November and December of 1990 and 1991 with symptomatology suggestive of the disease. Fifty (88%) of the 57 cases were males; the mean age of all the cases was 39.6 years (range 17-72). The main clinical features were: fever 100% jaundice 84%, Myalgia 82%, acute renal failure 72% and conjunctival suffusion 58%. Non-azotemic jaundice occurred in 19% of cases. Renal failure was non-oliguric in 24% of cases. 3.5% of patients died. 23 patients underwent peritoneal and/or hemodialysis. ELISA IgM titres ranged from 1:80 to 1:10240 (geometric mean tire 911). MAT titres > or = 1:1600 and > or = 1:800 occurred in 39 of 54 and 51 of 54 cases respectively. Autumnalis was the serogroup most commonly recorded serologically, and Leptospira interrogans serovar autumnalis was isolated from one patient. This study shows that leptospirosis is a significant health problem in Madras, though normally grossly underestimated due to the absence of routine laboratory diagnostic facilities for the disease. Gross under-reporting is also likely in other high rainfall third world areas.