Results 211 to 220 of about 7,348 (254)

Comparison of a new optical biometry with an optical low-coherence reflectometry for ocular biometry

Contact Lens and Anterior Eye, 2016
To evaluate the repeatability and agreement of a new partial coherence interferometry optical biometer (AL-Scan, Nidek CO, Aichi, Japan) with optical low-coherence reflectometry device (Lenstar LS 900, Haag-Streit AG, Köniz, Switzerland).Three consecutive measurements with the 2 devices were performed by the same examiner in 65 eyes of 65 patients with
Kulak, Ali Ender, Yuvarlak, Armagan, Hepsen, Ibrahim Feyzi, Guler, Emre, Totan, Yuksel   +4 more
openaire   +5 more sources

A New Device for Ocular Biometry

1981
Measuring the eye length and its different parts is of interest for several ophthalmological questions. Nowadays the ultrasonic biometry is very often used, as it is the only simple method to get information about the different axial distances of the eye.
R.-D. Lepper, H. G. Trier
openaire   +1 more source

Ocular Ultrasonography and Biometry in the Cinereous Vulture (Aegypius monachus)

Journal of Avian Medicine and Surgery, 2018
To establish reference standards for ocular ultrasound and biometry, 24 cinereous vultures (Aegypius monachus) (45 eyes) underwent B-mode and A-mode ultrasonographic examination using a 12.5-MHz probe. The vultures were manually restrained without sedation, and the eyes were topically anesthetized. Biometry was performed in the sagittal plane for axial
Ariadna, Apruzzese, Alfonso, Rodríguez, Fernando, González, Irene, López, Laura, Suárez, Elisa, González-Alonso-Alegre   +5 more
openaire   +2 more sources

Accuracy Considerations in the Ultrasonic Ocular Biometry

1975
Ocular biometry requires unusually high levels of accuracy in order to permit refractive corrections to be based on measurements of ocular dimensions. Keratoprosthesis, lens implants, aniseikonic lenses as well as physiological correlations all require an accuracy of the order of a fraction of a millimeter.
G. H. Myers, F. H. Bear
openaire   +1 more source

[Ocular biometry using Orbscan].

Journal francais d'ophtalmologie, 2005
Orbscan is a recent optical device that combines the Placido disk of the videokeratoscope and a scanning slit. The scanning slit measures the elevation of both the corneal surface (anterior and posterior) and the anterior iris-lens surface. Biometric measures of the anterior segment such as corneal thickness, anterior chamber depth, corneal diameter ...
O, Touzeau, C, Allouch, V, Borderie, L, Laroche   +3 more
openaire   +1 more source

Myopia Prevalence and Ocular Biometry Features in a General Japanese Population

Ophthalmology, 2021
Shin-Ya Nakao, Masahiro Miyake, Eri Nakano   +2 more
exaly  

[Biometry of very short ocular bulbs].

Ceska a slovenska oftalmologie : casopis Ceske oftalmologicke spolecnosti a Slovenske oftalmologicke spolecnosti, 1998
The authors evaluate the postoperative refractive results of 53 patients with extremely short eyes (16.0-20.0 mm) after IOL implantation. As the SRK II formula underestimates the A-constant increase for very short eyes, the authors as a results of the analysis of the set of patients recommend the A-constant recalculation according to formula: A ...
J, Korynta, J, Hycl, S, Krepelková
openaire   +1 more source

[Ocular biometry theory and practice].

Oftalmologia (Bucharest, Romania : 1990), 2003
The paper presents elements of eye biometry theory and practice as seen by a young resident, in his first years of practice as ophthalmologist. The paper refers to the current stage of IOL measurement technique. Also, challenges for the younger generation are presented, such as new formulas for the patients who have undergone refractive surgery ...
openaire   +1 more source

[Correlation between refraction and ocular biometry].

Journal francais d'ophtalmologie, 2003
To study the correlation between subjective refraction and biometry obtained by Orbscan and echography in normal eyes. To compare biometric parameters with the subjective spherical equivalent.Subjective refraction, biometric parameters using Orbscan, and echography were recorded in 190 normal eyes (including eyes with ametropia) of 95 patients ...
O, Touzeau, C, Allouch, V, Borderie, R, Kopito, L, Laroche   +4 more
openaire   +1 more source

Association of refraction and ocular biometry in highly myopic eyes

Australasian journal of optometry, The, 2021
Yanxian Chen, Linxing Chen, William Yan   +2 more
exaly