A 1994 outbreak of acute hemorrhagic conjunctivitis in Israel was caused by an enterovirus 70 strain that was distinct from previously reported strains. Characterization was by electron microscopy (eye washes), reverse transcription-PCR (RT-PCR; eyewash, specimens, eye swabs, and tears), and sequence analysis of RT-PCR-amplified fragments from the 5' noncoding region and VP1.

Electric light sources could produce flickers that might have biological effects. Although flicker is not always visible to the human eye, it may impact certain health. Eye strain, headaches, migraines, impaired vision, and, in sensitive people, photo epilepsy are just a few of negative impacts flicker. Many international organisations been working on lighting standards measurement response gro...

The optic anlage of the anophthalmic murine strain ZRDCT/an has been studied. In this strain, 70% of the adults are anophthalmic, 30% are one-eyed. The eye primordium appears and starts to differentiate at day 9 of gestation, then it degenerates. At 13 days of gestation, it has practically disappeared. When isolated and cultured in vitro, the 10-day anophthalmic anlage develops in the same way ...

PURPOSE Anterior chamber (AC) inoculation of the KOS strain of herpes simplex virus type 1 (HSV-1) results in morphologic sparing of the ipsilateral retina, whereas the retina of the uninoculated contralateral eye becomes infected and undergoes acute retinal necrosis. Natural killer (NK) cells are an important component of the primary immune response to most virus infections. The purpose of thi...

The relationship between thymidine kinase (TK) activity and virulence was studied in the mouse using three HSV-1 strains: (1) NIH TK+ (100% activity), (2) NIH TK+/- (25% TK activity), and (3) NIH TK- (0% TK activity). Following corneal inoculation, keratitis, virus titers (eye, trigeminal ganglia brain), survival, and latency were determined for each strain. The most virulent strain, NIH TK+ (3...

Development of visual lateralisation was studied in zebrafish larvae of an outbred strain when examining their own reflection in a mirror. There was significant left eye preference at all ages studied. A decrease in left eye use around 14 days, followed by a later increase at 21 days, parallels similar but differently timed shifts in the domestic chick. Age-dependent shifts in the likelihood of...

You are studying the mode of inheritance of eye color in flies. You have isolated four true-breeding mutant strains with green eyes . In contrast, wild-type flies have red eyes . In your Strains box in StarGenetics you will find 1) homozygous mutant male and female flies for each mutant strain and 2) homozygous wild-type male and female flies. In each of the four mutant strains, the mode of inh...

Genetic factors determining the pathogenesis and course of ocular toxoplasmosis are poorly understood. In this study, we explored the development of experimental ocular pathogenesis in genetically dissimilar mice infected with either the RH strain, the PLK strain, or the immunodominant surface antigen 1 (SAG1 [P30])-deficient mutant of the RH strain of Toxoplasma gondii. At 11 days postinfectio...