POSSIBLE CORRELATIONS OF OCULAR BLOOD-FLOW PARAMETERS WITH INTRAOCULAR-PRESSURE AND VISUAL-FIELD ALTERATIONS IN GLAUCOMA - A STUDY BY MEANSOF COLOR DOPPLER IMAGING

The authors evaluated, by means of color Doppler imaging, the blood fl ow of the ophthalmic artery, ciliary arteries and central retinal arte ry in normal and glaucomatous subjects. In normals they found that flo w velocities of all considered vessels progressively decline while res istivity indices increase with advancing age. In glaucomatous subjects there was a statistically significant reduction of the mean systolic peak flow velocity of the ophthalmic artery in comparison with normals . Glaucomatous eyes with uncontrolled IOP and with visual-field worsen ing showed a statistically significant decrease in the end-diastolic f low velocities and an increase in the resistivity index values in cili ary arteries.