Results 181 to 190 of about 13,094 (205)
Some of the next articles are maybe not open access.
Clinical and Experimental Optometry, 1973
The literature relating to keratometers and keratometry is reviewed to ascertain characteristics of the instrument that affect its use in the measurement of the anterior corneal surface, and to col...
openaire +1 more source
The literature relating to keratometers and keratometry is reviewed to ascertain characteristics of the instrument that affect its use in the measurement of the anterior corneal surface, and to col...
openaire +1 more source
The CLAO journal : official publication of the Contact Lens Association of Ophthalmologists, Inc, 1990
Corneal curvature was evaluated in 70 children by central keratometric measurements. The mean keratometric reading in each age group was seen to decline systematically from birth to about 54 months of age. The mean in the newborn-to-6-month-old group was 47.59 D; in the 12-18-month-old group it had decreased to 45.56 D.
P A, Asbell +3 more
openaire +1 more source
Corneal curvature was evaluated in 70 children by central keratometric measurements. The mean keratometric reading in each age group was seen to decline systematically from birth to about 54 months of age. The mean in the newborn-to-6-month-old group was 47.59 D; in the 12-18-month-old group it had decreased to 45.56 D.
P A, Asbell +3 more
openaire +1 more source
Journal of Cataract and Refractive Surgery, 2010
To evaluate the precision of the axial length (AL), keratometry (K), anterior chamber depth (ACD), astigmatism, and minus astigmatic cylinder axis measurements by a partial coherence interferometry (PCI)-keratometry device.Private practice, Lynwood, California.This prospective comparative observational study analyzed measurements in the second eye to ...
H John, Shammas, Steven, Chan
openaire +2 more sources
To evaluate the precision of the axial length (AL), keratometry (K), anterior chamber depth (ACD), astigmatism, and minus astigmatic cylinder axis measurements by a partial coherence interferometry (PCI)-keratometry device.Private practice, Lynwood, California.This prospective comparative observational study analyzed measurements in the second eye to ...
H John, Shammas, Steven, Chan
openaire +2 more sources
Clinical and Experimental Optometry, 1987
A Humphrey Auto Keratometer was used to evaluate the changes in corneal astigmatism that occurred under hypnosis. The measurements were made at the visual axis and the corneal apex in eight subjects. These measurements were taken before, during and after hypnosis.
openaire +1 more source
A Humphrey Auto Keratometer was used to evaluate the changes in corneal astigmatism that occurred under hypnosis. The measurements were made at the visual axis and the corneal apex in eight subjects. These measurements were taken before, during and after hypnosis.
openaire +1 more source
Precision of 5 different keratometry devices
International Ophthalmology, 2015To compare the precision among currently available keratometry devices. The corneal power was measured on two separate visits with the Nidek TonoRef II Autorefractor/Keratometer, the Zeiss IOLMaster 500, the Haag-Streit Lenstar LS 900, the Oculus Pentacam, and the Oculus Keratograph 4M.
Jonas Vejvad Nørskov, Laursen +2 more
openaire +2 more sources
Corneal Topography, Keratometry and Contact Lenses
Archives of Ophthalmology, 1962Introduction Within the last decade, the corneal contact lens has evolved from an optical curiosity into a widely accepted visual aid. The manufacturing and fitting techniques have become an exacting science. However, expedient clinical methods for the measurement and evaluation of the corneal curvatures have significantly lagged behind those of lens ...
J W, SOPER, W G, SAMPSON, L J, GIRARD
openaire +2 more sources
Surgical Computerized Keratometry
Journal of Cataract and Refractive Surgery, 2000NARDI, MARCO, Pellegrini G, Azzarelli L.
openaire +2 more sources
Keratometrie und IOL-Berechnung
1999Sechs verschiedene Formeln zur Bestimmung der Brechkraft der Hornhaut aus ihrem vorderen Krummungsradius wurden bezuglich der zugrundeliegenden Vorstellungen untersucht. Da prinzipiell zur genauen Brechwertbestimmung zusatzlich die Kenntnis des hinteren Krummungsradius notig ist, versuchen alle Formeln, diesen durch entsprechende Annahmen zu ...
openaire +1 more source