Ballistic impact resistance of selected organic ophthalmic lenses

Testing for the impact resistance of ophthalmic lenses

P 461 Distortion induced by ophthalmic lenses

IZAKI A., SHIMO-OKU M. Deparfment of Ophthalmology, Hyogo College of Medicine (Japan) Puroose : Blink reflexes evoked with comeal sensation or flash light stimulation are widely performed to examine optic, trigeminal and facial nerve. Both the electro-oculographic findings of lid movements and scleral search coil findings of eye movements during those blinks were investigated previously, we stu...

Ophthalmic drug delivery through contact lenses.

PURPOSE Currently available ophthalmic drug delivery systems are inefficient and may lead to side effects. To increase efficiency and reduce side effects, the authors propose disposable particle-laden soft contact lenses for ophthalmic drug delivery. METHODS The essential idea is to encapsulate the ophthalmic drug formulations in nanoparticles and to disperse these drug-laden particles in the...

Berger's Stereoscopic Lenses for Ophthalmic Practice

carrier (Fig. 1) which is attachable to the head by a band or spring-strap: or?still more conveniently?in a special reversible spectacle frame with a high bridge on one side and a low bridge on the other. (Fig2). They were originally designed to replace the single magnifying lens in use in the watchmaking and engraving trades. With a single lens it isobvious that the retinal image of the unused...

Ballistic Resistance Testing Techniques

The Department of Defense conducts ballistic resistance testing to estimate the probability that a projectile will perforate the armor of a system under test. Ballistic resistance testing routinely employs sensitivity experiment techniques in which sequential test designs are used to estimate armor performance. Statistical procedures used to estimate the ballistic resistance of armor in the DoD...