Search results for "Early glaucoma"
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Clinical Implications in Perimetry After Photorefractive Keratectomy
2003
Through refractive surgery, it is now possible to correct various ametropias using new techniques such as photorefractive keratectomy (PRK). We hypothesized that patients submitting to PRK show higher peripheral thresholds attributable to poorer retinal quality than normal patients. However, no difference were found when comparing glaucoma with PRK patients. Thus, early glaucoma following PRK may be masked by the previous surgery.
Motion perception in early glaucoma
2013
Purpose: The aim of our study was to underline the changes in the movement perception for early glaucoma. Our working hypothesis consisted in inquiring if the impairment of the magnocellular pathway may modify the movement perception capabilities in the visual field, more particularly in its peripheral area.Methods: We included 14 healthy subjects and 14 patients with early primary open angle glaucoma. A moving target was presented on a semicircular screen (1.8 m diameter); participants were asked to localize the Ending Point (EP) of each movement. Each stimulus consisted in a white dot (0,72° of diameter) moving horizontally with the imposed velocity profile. Two different laws of motion w…