cryoextracted lenses transferred to physiologic saline for brief periods of time. The deleterious effect of saline on cryoextracted lenses (Fig. 4), but not surgically excised lenses, is apparent from cation measurements and the fact that cryoextracted lenses exposed to saline accumulate Rb to a significantly lesser degree (33%) than when exposed to TCI99. While the results of this investigatio...

Past work has suggested that the medial superior temporal area (MST) is involved in the initiation of three kinds of eye movements at short latency by large-field visual stimuli. These eye movements consist of (1) version elicited by linear motion (the ocular following response), (2) vergence elicited by binocular parallax (the disparity vergence response), and (3) vergence elicited by global m...

A random sample of 9548 Palestinian Arabs living in the West Bank and Gaza Strip was identified, and 9054 (95.7%) were examined. Particular attention was directed to reduced visual acuity (VA) and its cause and to trachoma. Low visual acuity was defined as less than 6/18 in both eyes and binocular blindness as a VA less than 3/60 in both eyes. The overall incidence of low VA was 6.8% and of bin...

Rabbit corneas were stored in commercially prepared media (K-Sol, M-K, CSM, or Dexsol) for 3, 6, 9, or 12 days. Corneas stored in each medium showed decreased post-storage deturgescence with increased storage time. This effect was most pronounced in corneas stored in K-Sol, followed by those in M-K, CSM, and Dexsol. Corneas stored in K-Sol also exhibited the fastest swelling rate when cultured ...

We examined the effects of eye position on saccades evoked by electrical stimulation of the intraparietal sulcus (IPS) of rhesus monkeys. Microstimulation evoked saccades from sites on the posterior bank, floor, and the medial bank of the IPS. The size and direction of the eye movements varied as a function of initial eye position before microstimulation. At many stimulation sites, eye position...

Over the past ten years, corneal transplantation surgical techniques have undergone revolutionary changes. Since its inception, traditional full thickness corneal transplantation has been the treatment to restore sight in those limited by corneal disease. Some disadvantages to this approach include a high degree of post-operative astigmatism, lack of predictable refractive outcome, and disturba...

tion. If the researcher offers to assist the Eye Bank in tissue procurement, a partnership is beginning. This might include going with an eye banker to present inservice programs to a group of doctors, nurses, hospital administrators, or others who are close to the supply of tissue. It may be appearing with the eye banker on a radio talk show to explain the need of eye donations. It may be that...

purpose: to determine the prevalence of human t-cell lymphotropic virus (htlv) in corneal donors at the eye bank of i.r. iran from 2005 to 2007. methods: serologic tests for htlv-1,2 were performed in all donors at the eye bank from august 2005 to july 2007. hospital and medicolegal reports of htlv-reactive cases as well as their geographic origin were reviewed. results: overall, 5533 donors in...