Psychophysical measures of hue (wavelength) discrimination and spectral sensitivity were collected over a 3-year-period on a rhesus monkey whose right eye had been exposed to intense blue light 10 years prior and had shown a pronounced loss of blue sensitivity in an increment-threshold, spectral-sensitivity task. Hue discrimination, to a somewhat greater degree than spectral sensitivity, reveal...

Purpose. This study aims to evaluate dry eye and ocular surface conditions of myopic teenagers by using questionnaire and clinical examinations. Methods. A total of 496 eyes from 248 myopic teenagers (7-18 years old) were studied. We administered Ocular Surface Disease Index (OSDI) questionnaire, slit-lamp examination, and Keratograph 5M. The patients were divided into 2 groups based on OSDI dr...

BACKGROUND The study examined the effects of dietary fasting on physical balance among young healthy women. METHODS This study undertaken involving 22 young healthy women (age = 22 +/- 1.5) using a within subject counterbalanced 2-week crossover study design. Participants were asked to refrain from consuming any food or beverage for 12 hours prior to the fasting trial and to maintain their re...

We present a surface-normal plasmonic modulator structure for three-dimensional (3-D) optical interconnects using subwavelength metallic photonic crystals. Optical transmission of the metallic slab was controlled by modulating the plasmonic bandgap of the metallic photonic crystal slab with a moderate index perturbation induced by thermo-optic effects. Our experimental results show that more th...

Childhood glaucoma poses a diagnostic and therapeutic challenge to ophthalmologists. Difficulty in examination and limitations on ability to perform structural and functional testing of optic nerve make diagnosis and verification of glaucoma control difficult in children. It is well known that an excessive loss of hyperopia is a useful sign in alerting the examining ophthalmologist to the possi...

BACKGROUND The dry eye or tear film dysfunction is a common ophthalmic syndrome. OBJECTIVE To compare the results of conjunctival impression cytology between dry eye patients and normal individuals. SUBJECTS AND METHODS A case control study including consecutive cases of dry eye syndrome was carried out. Individuals without dry eye were taken as control. Impression of conjunctiva with cellu...

A 33-year-old man presented with low vision in his left eye. Best corrected visual acuity (OD: plano, OS: -7.5 diopters) was 20/20 in his right eye and counting fingers at 50 cm in the left eye. Relative afferent pupillary defect was 2+ in the left eye. Slit lamp examination was unremarkable in both eyes and intraocular pressure was within normal limits. Dilated fundus examination was normal in...

The electronystagmographical analysis of the eye movements is an important method in the evaluation and topical diagnostic procedure of several vestibular lesions. The aim of the study was to compare the electronystagmographical results of the optokinetic and the smooth pursuit eye-movement, and their sensitivity in several vestibular disorders. The patients were divided into five groups: right...

351 A seven‐year‐old male patient with sudden onset loss of vision in the left eye immediately after blunt trauma to the left eye following a fall from stairs presented to us three days after the trauma. History of epistaxis was present, although there was no history of loss of consciousness, vomiting, or convulsions. On examination, the left eye had a subconjunctival hemorrhage. Orbital emphys...

Quantitative eye movement recordings in a patient with multiple sclerosis who had both macro square wave jerks and an internuclear ophthalmoparesis supported the concept of an internal brain-stem monitor that mediates corrective eye movements. A brain-stem model of this monitor illustrates the patient's motility disorder and the normal function of providing synergistic version and vergence corr...