Purpose: To investigate the optic disc parameters in a group of healthy human eyes in a Greek cohort, and assess the age-related changes using a digital stereoscopic imaging system. Methods: A group of 106 consecutive...Purpose: To investigate the optic disc parameters in a group of healthy human eyes in a Greek cohort, and assess the age-related changes using a digital stereoscopic imaging system. Methods: A group of 106 consecutive normal subjects had optic disc stereo photography performed, using the Discam acquisition system (Discam, Marcher Enterprises Ltd, Hereford). Images were analyzed. Vertical and horizontal cup:disc ratios (CDR),展开更多
Background and Objective: Central comeal thickness (CCT) has been shown to be higher in ocular hypertension than normals. We investigated correlation of intraocular pressure (IOP) with CCT, keratometric and biometric ...Background and Objective: Central comeal thickness (CCT) has been shown to be higher in ocular hypertension than normals. We investigated correlation of intraocular pressure (IOP) with CCT, keratometric and biometric parameters in healthy subjects.展开更多
Purpose: There is evidence from a variety of animal studies that the adenosine system plays a role in the control of intraocular pressure (IOP) and ocular blood flow. However, human data on the effect of adenosine on ...Purpose: There is evidence from a variety of animal studies that the adenosine system plays a role in the control of intraocular pressure (IOP) and ocular blood flow. However, human data on the effect of adenosine on IOP, choroidal and optic nerve blood flow are lacking. Methods: We investigated the effect of stepwise increasing doses of adenosine (10, 20, 40μg/kg/min, 30 min-展开更多
The effects of poor anterior segment compensation on scanning laser polarimetry measurements of the retinal nerve fiber layer (RNFL) were systematically explored. A prototype scanning laser polarimeter with an adjusta...The effects of poor anterior segment compensation on scanning laser polarimetry measurements of the retinal nerve fiber layer (RNFL) were systematically explored. A prototype scanning laser polarimeter with an adjustable compensator to neutralize anterior segment birefringence was used. By systematically varying the magnitude and axis of anterior segment compensation in a healthy and a glaucomatous eye,marked changes were observed in RNFL appearance: the healthy eye could appear to have glaucomatous damage,whereas the glaucomatous eye could appear to have a thicker and healthier RNFL. Even small amounts of uncompensated corneal birefringence,which may occur in routine clinical use,resulted in apparent changes in RNFL morphology. Knowledge of this effect is important for clinicians when using scanning laser polarimetry in clinical practice.展开更多
文摘Purpose: To investigate the optic disc parameters in a group of healthy human eyes in a Greek cohort, and assess the age-related changes using a digital stereoscopic imaging system. Methods: A group of 106 consecutive normal subjects had optic disc stereo photography performed, using the Discam acquisition system (Discam, Marcher Enterprises Ltd, Hereford). Images were analyzed. Vertical and horizontal cup:disc ratios (CDR),
文摘Background and Objective: Central comeal thickness (CCT) has been shown to be higher in ocular hypertension than normals. We investigated correlation of intraocular pressure (IOP) with CCT, keratometric and biometric parameters in healthy subjects.
文摘Purpose: There is evidence from a variety of animal studies that the adenosine system plays a role in the control of intraocular pressure (IOP) and ocular blood flow. However, human data on the effect of adenosine on IOP, choroidal and optic nerve blood flow are lacking. Methods: We investigated the effect of stepwise increasing doses of adenosine (10, 20, 40μg/kg/min, 30 min-
文摘The effects of poor anterior segment compensation on scanning laser polarimetry measurements of the retinal nerve fiber layer (RNFL) were systematically explored. A prototype scanning laser polarimeter with an adjustable compensator to neutralize anterior segment birefringence was used. By systematically varying the magnitude and axis of anterior segment compensation in a healthy and a glaucomatous eye,marked changes were observed in RNFL appearance: the healthy eye could appear to have glaucomatous damage,whereas the glaucomatous eye could appear to have a thicker and healthier RNFL. Even small amounts of uncompensated corneal birefringence,which may occur in routine clinical use,resulted in apparent changes in RNFL morphology. Knowledge of this effect is important for clinicians when using scanning laser polarimetry in clinical practice.
