Results 251 to 260 of about 31,207 (305)
Some of the next articles are maybe not open access.
Journal of the Optical Society of America, 1981
The spectral dispersions of rabbit, rat, pigeon, and human crystalline lens material have been measured with a Pulfrich refractometer. The refractive indices all increase rapidly at the violet end of the spectrum so tat the chromatic aberrations of the eyes of these species cannot be derived adequately from Cornu's formula, as had previously been ...
D A, Palmer, J, Sivak
openaire +2 more sources
The spectral dispersions of rabbit, rat, pigeon, and human crystalline lens material have been measured with a Pulfrich refractometer. The refractive indices all increase rapidly at the violet end of the spectrum so tat the chromatic aberrations of the eyes of these species cannot be derived adequately from Cornu's formula, as had previously been ...
D A, Palmer, J, Sivak
openaire +2 more sources
A Model for Crystalline Lens Accommodation
Comprehensive Therapy, 2003When a slight equatorial pull is applied to the crystalline lens, the center thickens, the central surfaces steepen, and the optical power increases. These findings are consistent with Schachar's theory of accommodation.
Chang-Hai M, Chien +2 more
openaire +2 more sources
Abscess of the Crystalline Lens
American Journal of Ophthalmology, 1943Perforating injuries of the globe frequently involve the lens by causing perforation of the anterior capsule and the production of varying stages of traumatic cataract. If infection accompanies the perforation, a purulent infiltration results in abscess of the lens.
R O, Rychener, E C, Ellett
openaire +2 more sources
Interaction and aggregation of lens crystallins
Experimental Eye Research, 1991Crystallins of the normal eye lens have a specific structure that maintains lens transparency. This structure reportedly arises from a short-range order. The age-related post-translational changes and high molecular weight (HMW) aggregation disrupt the normal structure and decrease lens transparency.
J N, Liang, X Y, Li
openaire +2 more sources
Autofluorescence of the Crystalline Lens in Diabetes
Archives of Ophthalmology, 1986Lenticular autofluorescence in a diabetic population was quantitated by scanning ocular fluorophotometry. Measurements were made through the lens along the optical axis. The profile of the scan from front to rear was characterized by anterior and posterior juxtacortical peaks and a central plateau.
M A, Mosier +2 more
openaire +2 more sources
Management of the Subluxed Crystalline Lens
Ophthalmology, 1992There has been a traditional reluctance to remove a subluxed (ectopic) lens because of the high surgical risk. The use of closed intraocular microsurgical techniques, however, now allows greater intraoperative control with few complications. The authors present the results of subluxed lens extraction, by limbal or pars plana lensectomy, in 44 eyes of ...
K N, Hakin +4 more
openaire +2 more sources
2014
The human crystalline lens is the second most important refracting element of the eye. The lens functions primarily in accommodative vision. The lens doubles in volume between birth and age 70. Approximately at age 40, the lens loses its ability to accommodate because of loss of pliability, and at age 70 the transparency of the lens is reduced ...
J. Douglas Cameron, Dejan M. Rašić
openaire +1 more source
The human crystalline lens is the second most important refracting element of the eye. The lens functions primarily in accommodative vision. The lens doubles in volume between birth and age 70. Approximately at age 40, the lens loses its ability to accommodate because of loss of pliability, and at age 70 the transparency of the lens is reduced ...
J. Douglas Cameron, Dejan M. Rašić
openaire +1 more source
Crystalline Lens Power in Myopia
Optometry and Vision Science, 1992ABSTRACT Growth of the eye shows a coordinated pattern whereby the reduction in refractive power of the cornea and crystalline lens tends to reduce the myopia that would otherwise result from the normal increase in axial length. There is some controversy as to whether the reduction in crystalline lens power is influenced by the ...
L F, Garner, M, Yap, R, Scott
openaire +2 more sources
Sugar metabolism in the crystalline lens
Survey of Ophthalmology, 1978Research on the sugar metabolism of the crystalline lens, past and preent, is reviewed. The chief energy source in the lens is the Embden-Meyerhof pathway; respiration and oxidative phosphorylation become more important as the lens ages. The function of the alpha-glycerophosphate cycle is not fully understood.
L T, Chylack, H M, Cheng
openaire +2 more sources
Ophthalmic and Visual Optics, 1991
Visual performance is influenced in many ways by the crystalline lens, too many to do justice to here. This paper will be restricted to a discussion of how the crystalline lens influences the optical quality of the image on the retina.
openaire +1 more source
Visual performance is influenced in many ways by the crystalline lens, too many to do justice to here. This paper will be restricted to a discussion of how the crystalline lens influences the optical quality of the image on the retina.
openaire +1 more source