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Archives of Ophthalmology, 1960 A new method is described for extracting intumescent cataracts by means of a pencilshaped metal instrument called the cryoextractor. The small, rounded, copper tip of the instrument is so refrigerated that when it is applied to the exposed lens superi¬ orly, the capsule and underlying cortex freeze and adhere to the cryoextractor.
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Archives of Ophthalmology, 1966 ers. Zimmerman and Font85·110'117·184 have reviewed several congenital ocular syndromes that include the characteristic ophthalmic pathology of these malformations. Among these are the retinal dysplasia and the 13-15 trisomy syndromes characterized by (1) bi.teral congenital malformation of the eyes; 2) malformation of the brain, heart, and other ...
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Replacing a thin lens by a thick lens
Applied Optics, 2020This paper deals with the problem of replacing a thin lens by a thick lens with approximately the same properties as the thin lens. Equations enabling the calculation of the parameters of a thick lens that has the same focal length and the same value for one of the Seidel aberration coefficients (either the Seidel aberration coefficient of spherical ...
Antonin Miks, Pavel Novák
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Lens Antennas for 5G Communications Systems
IEEE Communications Magazine, 2018Here, we explain the principles of operating lens antennas, and discuss their potential application for future 5G communications systems. We discuss the connection between the nomenclature employed in the optics and microwave communities, such as the ...
O. Quevedo–Teruel +2 more
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The Lens Capsule and the Intraocular Lens-the ‘Moustache Lens’
European Journal of Implant and Refractive Surgery, 1989The use of the capsular bag for fixation of intraocular lenses is described. In routine cases, the ‘moustache principle’ of lenses is easy, safe and guaranteed. The envelope technique, or intercapsular surgery, is described. In traumatic cases, the two-plane two-loop or four-loop lenses are advised as an adequate alternative.
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Archives of Ophthalmology, 1951
WITHIN the last year many reports have appeared evidencing noteworthy progress in the investigations of the fundamental problems of the composition and metabolism of the lens and vitreous humor. Efforts were made to solve the problems of the etiology, prophylaxis and treatment of retrolental fibroplasia.
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WITHIN the last year many reports have appeared evidencing noteworthy progress in the investigations of the fundamental problems of the composition and metabolism of the lens and vitreous humor. Efforts were made to solve the problems of the etiology, prophylaxis and treatment of retrolental fibroplasia.
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Soft Matter, 2012
Four different types of micro lens-on-lens array structures, one of which corresponds to an array of a compound eye lens, were fabricated on a commercial plastic film using a novel fabrication technique. All lens-on-lens structures were fabricated not as an isolated lens but as an array on a transparent plastic film on a large scale.
Han Sup Lee +3 more
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Four different types of micro lens-on-lens array structures, one of which corresponds to an array of a compound eye lens, were fabricated on a commercial plastic film using a novel fabrication technique. All lens-on-lens structures were fabricated not as an isolated lens but as an array on a transparent plastic film on a large scale.
Han Sup Lee +3 more
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Archives of Ophthalmology, 1975
The subjects to be reviewed are as follows: (1) Anatomy, histology, and pathology. (2) Genetic and congenital anomalies. (3) Cataract. (Under cataract we shall consider the following: incidence and prevention of blindness from cataract; formation of an experimental production of cataract; cataract related to ocular and systemic disease; cataract ...
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The subjects to be reviewed are as follows: (1) Anatomy, histology, and pathology. (2) Genetic and congenital anomalies. (3) Cataract. (Under cataract we shall consider the following: incidence and prevention of blindness from cataract; formation of an experimental production of cataract; cataract related to ocular and systemic disease; cataract ...
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A Broadband Metasurface‐Based Terahertz Flat‐Lens Array
Advanced Optical Materials, 2015Xueqian Zhang, Zhen Tian, Jianqiang Gu
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Review of Contact Lens-Related Complications.
Eye & contact lens, 2018The purpose of this article is to provide a review of existing literature describing complications with contemporary contact lenses and their management.
C. Lim, F. Stapleton, J. Mehta
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