A computer is a device that processes, stores, and displays data. In recent years, digital gadget usage has steadily risen across all age groups, towards the point noteworthy quality use for both social professional purposes now norm. Digital eye strain (DES), also known as vision syndrome, collection of ocular visual problems affects 50 percent or more users, according to estimates. Overuse in...

PURPOSE Involuntary physiological responses offer an alternative means to psychophysical procedures for objectively evaluating discomfort glare. This study examined eye movement and pupil size responses to glare discomfort using new approaches to analysis: relative pupil size and speed of eye movement. METHODS Participants evaluated glare discomfort using the standard de Boer rating scale und...

In March 2014, a 39-year-old Korean male presented with a 6-month history of various nonspecific symptoms including dizziness, fatigue, asthenia, irritability, elevated blood pressure, palpitation, eyestrain, and tinnitus. His occupational history revealed that he had been working as an indoor firing range manager for 13 months; therefore, he was subjected to a blood lead level (BLL) test. The ...

A review of available literature has shown something of a paucity of suggested and applied microscopic techniques on the identification of human spermatozoa in forensic casework. Phase contrast microscopy (PC) has been mentioned as the desirable technique by Kirk [1] and Kivela [2]. The advantages of PC as compared with bright-field are well known and would most certainly include simplifring th...

BACKGROUND Awareness of effects of long term use of computer and application of ergonomics in the computer workstation is important for preventing musculoskeletal disorders, eyestrain and psychosocial effects. OBJECTIVES To determine the awareness of physical and psychological effects of prolonged computer usage and application of ergonomicsin the workstation. DESIGN One hundred and eighty ...

We reviewed the records of 220 visually symptomatic, ambulatory patients with acquired brain injury. These patients were examined at the State University of New York, State College of Optometry’s Raymond J. Greenwald Rehabilitation Center (RJGRC). The records were divided into sub-groups of mild traumatic brain injury (TBI) and cerebral vascular accident (CVA). The former group accounted for 16...

BACKGROUND There are millions of working children worldwide. Several causes are suggested for this social evil of which poverty plays a significant role in whether a child will work. OBJECTIVE To determine the morbidity profile in the working children of gem polishing units of Jaipur, India and assess some of its associated socio-economic factors. METHODS The present cross-sectional study i...

OBJECTIVE We provide a review and analysis of much of the published literature on visual perception issues that impact the design and use of head-mounted displays (HMDs). BACKGROUND Unlike the previous literature on HMDs, this review draws heavily from the basic vision literature in order to help provide insight for future design solutions for HMDs. METHOD Included in this review are articl...

In this article, we are concerned with the role of colors in reading written texts. It has been argued that colored overlays applied above written texts positively influence both reading fluency and reading speed. These effects would be particularly evident for those individuals affected by the so called Meares-Irlen syndrome, i.e., who experience eyestrain and/or visual distortions - e.g., col...