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[Topographical pachymetry and pachymetric topography in circumscribed posterior keratoconus]
M A Parafita1, J M González-Meijome, J A Díaz
1Unidad docente de Oftalmología, Departamento de Cirugía, Escuela Universitaria de Optica y Optometría, Universidad de Santiago de Compostela, España. ciparaft@usc.es
Case Report:
A 29 year-old male patient presenting circumscribed posterior keratoconus in the left eye was studied. After ocular examination, corneal morphometry was studied by a computer-assisted topographic analysis and topographical ultrasonic pachymetry. Corneal thickness profile was represented by a colour-coded map from twenty-five measured points (pachymetric topography).
Discussion:
Slit lamp biomicroscopy shows a paracentral-localized area of moderate corneal thinning with a nasal-superior concavity on posterior corneal surface. Topographical pachometry and pachometric topography allow to make precise corneal thinning evaluation and offer useful diagnostic data for this rare corneal dystrophy.