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TOPOGRAFIA CORNEAL

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by

Cecilia Alós

on 4 August 2014

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Transcript of TOPOGRAFIA CORNEAL

TOPOGRAFIA CORNEAL
CURSO TEORICO-PRACTICO
CORNEA
PODER
RADIO
FORMA
CARA ANTERIOR
ZONAS
CENTRAL U OPTICA
PARACENTRAL
PERIFERICA
LIMBICA
INSTRUMENTOS DE MEDICION
QUERATOMETRIA
QUERATOSCOPIA O FOTOQUERATOSCOPIA
VIDEOQUERATOSCOPIA COMPUTARIZADA
TIPOS
BASADO EN REFLEXION
BASADO EN PROYECCION
CARA POSTERIOR
TOPOGRAFIA CORNEAL COMPUTARIZADA
MECANISMO DE FUNCION
PRESENTACION DE LA INFORMACION
INDICES
IMAGEN QUERATOSCOPICA
DIGITALIZACION DE LA IMAGEN
CALCULO DEL PODER DIOPTRICO EN CADA PUNTO Y LOCALIZACION
OBTENCION DE MAPAS TOPOGRAFICOS
CODIGOS DE COLORES
ESCALAS
MAPAS
FACTORES QUE INTERVIENEN SOBRE LOS MAPAS
PELICULA LAGRIMAL
PARPADOS
ENFOQUE
MAPAS Y OVERLAYS SUGERIDOS

Pupil margin: Displays the visually important region. Helps evaluating photopic pupillary size, and the centration
or refractive surgery.
Grids square: Helps defining size and location of abnormalities.
Circular: Helps defining size and location of abnormalities.
Polar: Helps defining axis of abnormalities and the assessment of radial keratotomies.
Optical zone: Useful in refractive surgery for planning procedures or assessing results.
Angular scale: Useful in refractive surgery of astigmatism for planning procedures or assessing results. It is
similar in use to polar grid (Figure 1.16).
Eye image: More realistic than a simple map, it eases patient's interpretation of the map.
Keratoconus: A peak or keratoconus overlay can be applied by Dicon's CT-200. It is called Bull's Eye target: If one
peak area exists with an index of 10 or greater, the system automatically marks it with a target, indicating the
location of this elevation to some but not all maps (see Figures 1.17 and 1.18).
Keratometer mires: It is a graphic reference showing a 3 mm circle with both major and minor meridians,
representing the calculated keratometry readings, 90 degrees apart (perpendicular). It also shows a 5 mm with
the steepest and flattest meridians (see Figure 1.16) .
COLORES FRIO
CALIDOS
AMARILLOS Y VERDES
ABSOLUTA
(ESTANDAR)
AJUSTABLE
NORMALIZADA
(RELATIVA)
AXIAL / SAGITAL
TANGENCIAL / MERIDIONAL
ALTURA / ELEVACION
REFRACTIVO
SimK
MinK
SRI
SAI
PVA
e
SF
Q
SEP
S-I
INTERPRETACION
TOPOGRAFIA NORMAL
APLICACIONES
PATRONES TOPOGRAFICOS NORMALES
REDONDO / ESFERICO
OVAL
ASTIGMATISMO SIMETRICO
ASTIGMATISMO ASIMETRICO
IRREGULAR
VALORACION PRE Y POST CIRUGIA REFRACTIVA Y AIC
EVALUACION DEL ASTIGMATISMO IRREGULAR POST-QPP
SEGUIMIENTO DE ULCERAS Y CICATRIZACION POST TRAUMATICA
ADAPTACION LC
ESTUDIO DE LA CALIDAD DE LA PELICULA LAGRIMAL
ECTASIAS CORNEALES
WARPAGE
QUERATOGLOBO
DEGENERACION MARGINAL PELUCIDA
QUERATOCONO
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