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Role of impression cytology during hypovitaminosis A.
Polizzi, A; Schenone, M; Saccà, S C; Burlando, S; Freedman, D; Marinari, G; Cuneo, S; Rovida, S; Formelli, F; Camerini, G.
Afiliación
  • Polizzi A; Istituto Di Clinica Oculistica dell' Universita' Di Genova, Italy.
Br J Ophthalmol ; 82(3): 303-5, 1998 Mar.
Article en En | MEDLINE | ID: mdl-9602630
AIMS: Evaluation of the morphological damage to the ocular surface of patients operated for biliopancreatic diversion for pathological obesity and the correlation of impression cytology with vitamin A plasma levels, adaptometry, and other general variables. METHODS: 48 patients (15 males, 33 females, age range 21-73) and 34 normal subjects were examined with fluorescein and rose bengal, a plasma dose of vitamin A, and adaptometry. The results of the various tests were subdivided into three levels (0 = normal, 1 = moderately altered, 2 = seriously altered). The impression cytology and adaptometry results were correlated with vitamin A levels and other patient data (age, nutritional condition, time since operation, percentage weight loss). All the examinations were repeated after intramuscular therapy with vitamin A. RESULTS: Corneoconjunctival alterations visible with fluorescein and rose bengal staining were present in 67.7% of cases, impression cytology alterations in 93.7%, adaptometric alterations in 82.2%; vitamin A plasma levels were below normal in 95.8% of cases. After the therapy with vitamin A a significant reduction was found for every examination. The correlation between impression cytology and adaptometry and vitamin A plasma levels and between corneoconjunctival alterations and vitamin A plasma levels was significant. There was no significant correlation between impression cytology and nutritional condition, age time since operation, and percentage weight loss. CONCLUSION: These results show impression cytology is a specific indicator for hypovitaminosis A because it is not influenced by other factors related to the general condition of the patient. Many patients with hypovitaminosis A not demonstrating ocular symptoms of changes visible with fluorescein and rose bengal showed alterations with impression cytology.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Deficiencia de Vitamina A / Biopsia / Desviación Biliopancreática / Enfermedades de la Conjuntiva / Enfermedades de la Córnea Tipo de estudio: Observational_studies Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: Br J Ophthalmol Año: 1998 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Reino Unido

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Deficiencia de Vitamina A / Biopsia / Desviación Biliopancreática / Enfermedades de la Conjuntiva / Enfermedades de la Córnea Tipo de estudio: Observational_studies Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: Br J Ophthalmol Año: 1998 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Reino Unido