The aim of this study was to analyze and compare corneal biomechanics in patients with bilateral keratoconus (KCN) with unilateral Vogt's striae. In this prospective contralateral study, visual acuity, refraction, and corneal biomechanical parameters were evaluated in patients with bilateral KCN with unilateral Vogt's striae using the Ocular Response Analyzer (ORA) (Reichert Inc., Buffalo, NY) ...

PURPOSE To evaluate visual function in patients with early presbyopia using the functional visual acuity (FVA) test. METHODS This study included 27 eyes of 27 healthy older volunteers (mean age, 44.1 ± 2.6 years) and 14 eyes of 14 healthy young volunteers (mean age, 28.4±4.8 years). The distance-corrected visual acuity (DCVA), distance-corrected near VA (DCNVA), subjective amplitude of accomm...

One hundred and forty patients were referred for a clinical evaluation of their eyes, having produced high scores on screening by the Arden grating test (AGT). In these patients 66% of the eyes were found to be normal, 31% abnormal, and 3% indeterminate on clinical examination. Suitable criteria for referral for clinical examination were determined and the recommended scores are: (a) A total AG...

The eyes are controlled by multiple brain circuits, some phylogenetically old and some new, whose aims may conflict. Old otolith reflexes counterroll the eyes when the head tilts relative to gravity. Newer vergence mechanisms coordinate the eyes to aid stereoptic vision. We show that counterroll hinders stereopsis, weakly when you look into the distance but strongly when you look near. The reso...

The aim of this study was to evaluate clinical outcomes after toric intraocular lens implantation for astigmatism correction in patients undergoing cataract surgery. This prospective observational study included eyes undergoing cataract surgery at Sestre milosrdnice University Hospital Center between February and September 2011. The study enrolled eyes that had visually significant cataract and...

PURPOSE To compare changes in anterior segment parameters under light and dark (light-to-dark) conditions among eyes with chronic primary angle-closure glaucoma (CPACG), fellow eyes with confirmed or suspect primary angle-closure (PAC or PACS), and age-matched healthy eyes. METHODS Consecutive patients with CPACG in one eye and PAC/PACS in the fellow eye, as well as age-matched healthy subjec...

PURPOSE To characterize the thickness of the peripapillary sclera in perfusion-fixed normal monkey eyes so as to build accurate computational models of intraocular pressure (IOP)-related stress and strain within these tissues. METHODS Nine rhesus monkeys were perfusion fixed, each with one normal eye set to an IOP of 10 mm Hg by manometer. A 6-mm-diameter specimen containing the optic nerve h...

PURPOSE To describe an excimer laser ablation architecture called the pseudoaccommodative cornea (PAC) that uses ocular aberrometry and aspheric ablation profiles to create a multifocal cornea. METHODS A descriptive article outlining the theory of the PAC algorithm. RESULTS The topographic changes induced by PAC produce corneal multifocality. CONCLUSIONS PAC-treated eyes have progressive ...

Conventional screening for Fetal Alcohol Syndrome in children involves time-consuming and intrusive facial distance measurements. We are developing an alternative method that will allow automatic measurement of the relevant distances from a pair of stereo photographs, as a screening aid. This paper describes a method for automatic extraction from such photographs of the points on the eyes used ...

METHODS. In this retrospective case series, 72 eyes of 57 consecutive patients who underwent vitrectomy for DME were included. Retinal images dissecting the fovea horizontally were obtained using OCT before and after vitrectomy. After identification of the disc margin and the presumed foveal center, the papillofoveal distance was measured on the OCT images. The association of the distance with ...