Avaliação de parâmetros tomográficos de córnea e segmento anterior e de variáveis desencadeadas pela resposta ocular à tonometria de não contato / Evaluation of corneal and anterior segment tomography parameters and variables triggered by ocular response to non-contact tonometry

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

24/07/2012

RESUMO

PURPOSE: to evaluate and to correlate anterior segment tomography parameters and corneal biomechanical parameters between each other, age and gender in patients with healthy eyes. METHODS: a clinical study of case series design with diagnostic intervention was conducted, involving one eye randomly selected from 235 patients (235 eyes). Patients underwent complete ophthalmological examination, including tomographic (Pentacam) and biomechanical (ORA) evaluation. Pentacam parameters assesssed: K1, K2, K Front Max , Astig, ISV, IVA, KI, CKI, IHA, IHD, BAD D, BAD Df, BAD Db, BAD Dp, BAD Dt, BAD Dy, ART Max, ART Avg, ART Min, Enh BFS Front 8mm, Enh BFS Back 8mm, Ele F BFS 8mm Apex, Ele F BFS 8mm Thinnest, Ele F BFS 8mm Max 4mm zone, Ele B BFS 8mm Apex, Ele B BFS 8mm Thinnest, Ele B BFS 8mm Max 4mm zone, Ele F BFTE 8mm Apex, Ele F BFTE 8mm Thinnest, Ele F BFTE 8mm 4 mm zone, Ele B BFTE 8mm Apex, Ele B BFTE 8mm Thinnest, Ele B BFTE 8mm Max 4mm zone, RPI Max, RPI Avg, RPI Min, Diff RPI Max Compl, Diff RPI Min Compl, Pachy Min, Pachy Apex, Pachy Pupil, Rel Pachy Min, Asph Q Front 30º, Asph Q Back 30º, Q Asymmetr Frontal Hor 30º, Q Asymmetr Frontal Vert 30º, AC Depth, AC Volume, Ch Angle, Volume, PNS, Densid Avg %. ORA Parameters assessed: IOPg, IOPcc, CH, CRF, KC Score, KC Normal, KC Suspect, KC Mild, KC Moderate, KC Severe, WS, aindex, bindex, p1area, p2area, aspect1, aspect2, uslope1, uslope2, dslope1, dslope2, w1, w2, h1, h2, dive1, dive2 , path1, path2, mslew1, mslew 2, slew1, slew2, aplhf, p1area1, p2area1, aspect11, aspect21, uslope11, uslope21, dslope11, dslope21, w11, w21, h11, h21, path11, path21. RESULTS: K1, K2, K Max Front, BAD Df, Ele B BFS 8mm Thinnest, Ele B BFTE 8mm Thinnest, CRF and CH showed higher values in females and BAD Db, Enh BFS Front 8mm, AC Depth, AC Volume, Ch Angle, p1area, w2, h1, p1area1, w21 and h11 showed higher values in males. CKI, BAD Db, Ele F BFS 8mm Apex, Ele F BFS 8mm Thinnest, Ele F BFTE 8mm Apex, Ele F BFTE 8mm Thinnest, Asph Q Back 30º, AC Depth, Ch Angle showed strong negative correlation with age. Ele B BFS 8mm Apex, Ele B BFS 8mm Thinnest, Ele B BFTE 8mm Apex, Ele B BFTE 8mm Thinnest showed strong positive correlation with age. The highest correlations of CH and CRF occurred with BAD Dt, Pachy Min, Pachy Apex and Pachy Pupil, i.e. CH and CRF presented positive association with central corneal thickness. The highest correlations of IOPg occurred with BAD Dt, ART Max, ART Avg, Pachy Min, Pachy Apex and Pachy Pupil, showing that it is affected by the thickness of the cornea. IOPcc showed lower correlations than those obtained with IOPg, showing that it is less affected by the thickness of the cornea. CONCLUSION: Anterior segment tomographic parameters (Pentacam) and biomechanical parameters (ORA) showed several statistically significant associations between each other, age and gender in patients with healthy eyes

ASSUNTO(S)

biomecânica biomechanics cornea córnea tomografia de córnea tomography tonometria ocular tonometry ocular

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