PURPOSE This study examined the peripapillary choroidal thickness (PCT) in nonarteritic ischemic optic neuropathy (NAION) in comparison to contralateral eyes and normal eyes. METHODS We used enhanced depth imaging spectral-domain optical coherence tomography to image the optic nerve head of 20 NAION, 10 contralateral eyes, and 102 normal eyes. Following compensation, the scans were manually d...

The genus Diaea Thorell, 1869 contains 75 known species with the type species D. dorsata (Fabricius, 1777). It is distributed worldwide, and about half of the species currently assigned to this genus are found in Australasia (Platnick 2014). Four Diaea species have been recorded from China, D. subdola O. P.-Cambridge, 1885, D. suspiciosa O. P.Cambridge, 1885, D. mikhailovi Zhang, Song & Zhu, 20...

PURPOSE To study the mechanisms of pupillary block in eyes with occludable angle by ultrasound biomicroscopy. METHODS Initially, a pilot study of 13 eyes with acute primary angle-closure without medication was executed. Ultrasound biomicroscopy measurements of the angle, posterior chamber depth and iris thickness were performed in the temporal quadrant under light and dark conditions. Afterwa...

The wolf spider Lycosa tarantula homes using path integration. The angular component of the displacement is measured using a polarized-light compass associated with the functioning of the anterior median eyes. However, how L. tarantula estimates the linear component of the displacement was not known prior to this investigation. The ability of L. tarantula to gauge the distance walked after bein...

We measured the focal distance and pupil diameter on the eyes of 11 marksmen sighting a pistol target at 23 m distance. Both upon the focal distance and pupil diameter of the subjects, we estimated the point at which they were looking during sighting. Calculation based on depth of field which can be divided from the pupil diameter of 4.5 mm suggested that the subjects were looking at the foresi...

PURPOSE To investigate functional outcomes of the INTRACOR femtosecond laser-based intrastromal procedure to treat presbyopia. METHODS Sixty-three eyes from 63 presbyopic patients (median age: 54 years) with mild hyperopia were enrolled in this prospective, ethics committee-approved, multi-center, nonrandomized clinical trial. The INTRACOR procedure was performed using the Technolas femtoseco...

PURPOSE To evaluate changes at the anterior chamber angle during Valsalva maneuver in eyes suspected to have a primary adult glaucoma. METHODS Seventy-six consecutive patients underwent recording of applanation tonometry, measurement of the anterior chamber angle recess, angle opening distance, angle recess area, scleral spur-iris root distance, iris thickness, iridociliary angle, ciliary bod...

Fine binocular coordination of saccades is essential for clear binocular vision, whatever the viewing distance. When saccading between targets at far distance (for example 400 cm), the saccade starts with visual axes almost parallel (small vergence angle); coordination of saccade allows the angle to be maintained. At near distance (for example 40 cm), the eyes converge; yet the saccades should ...

This case series examines the magnitude and regional variation in scleral lens–induced corneal edema postradial keratotomy (RK) eyes. Scheimpflug imaging was used to measure thickness across central 6 mm before after lens wear nine post-RK eyes (median age 64 years). Variations were examined as a function of distance from center (six 0.5-mm annuli) 0° 360°. The median 2.19% (interquartile range...

PURPOSE To evaluate the 4-year visual, refractive, and contrast sensitivity outcomes of wavefront-guided LASIK for the correction of low to moderate myopia using the VISX CustomVue technology (Abbott Medical Optics, Inc., Santa Ana, CA). METHODS This was a prospective study including 255 consecutive eyes of 145 patients (age range: 19 to 55 years) with low to moderate myopia (mean spherical e...