Results 261 to 270 of about 137,136 (300)

Axial Eye Length Assessment in Silicone Oil-Filled Eyes

The Egyptian Journal of Hospital Medicine, 2017
Purpose: to compare the reliability of axial eye length (AEL) measurement in silicone oil-filled phakic eyes by conventional B-scan ultrasonography through the eyelid, after a correcting factor,to partial coherence interferometry (PCI) measurement. Methods: a prospective and comparative study was performed at Al-Zahraa University Hospital clinic from (
Hayam S. Kamel, Mona N. Mansour
openaire   +1 more source

Influence of axial length of normal eyes on PERG

Documenta Ophthalmologica, 2003
The influence of the axial length (AL) of the eye on flash electroretinogram (ERG) responses has been well established in the literature, suggesting an association between ERG abnormalities with myopia (AL > 25 mm). The aim of our present study was to determine whether the AL of normal eyes can also influence the pattern electroretinogram (PERG) on ...
Rudy, Hidajat, Jan, Mclay, Celeste, Burley, Mark, Elder, Jason, Morton, David, Goode   +5 more
openaire   +2 more sources

Interocular Axial Length Difference in Eyes With Pediatric Cataracts

Journal of American Association for Pediatric Ophthalmology and Strabismus, 2005
We sought to report interocular axial length difference (IALD) between the operated eye and fellow eye at the time of pediatric cataract surgery.A retrospective analysis of 171 cataractous (operated) eyes (mean patient age at surgery, 56.9 months; range, 0.2-230.0) was undertaken.
Garima, Lal, Rupal H, Trivedi, M Edward, Wilson, Leslie C, Scarlett, M Millicent, Peterseim   +4 more
openaire   +2 more sources

Ultrasound axial length measurement in biphakic eyes

Journal of Cataract and Refractive Surgery, 2003
To determine the calculations to correct the error in ultrasound measurement of a phakic eye with a phakic intraocular lens (IOL) (biphakic eye) to increase the accuracy of IOL power calculation should cataract surgery become necessary. Mathematical derivations were performed to calculate the error caused by a phakic IOL while measuring an eye using an
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Ultrasound velocities for axial eye length measurement

Journal of Cataract and Refractive Surgery, 1994
Since 1974, I have used individual sound velocities for each eye condition encountered for axial length measurement. The calculation results in 1,555 M/sec for the average phakic eye. A slower speed of 1,549 M/sec was found for an extremely long (30 mm) eye and a higher speed of 1,561 M/sec was noted for an extremely short (20 mm) eye.
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Large coherence length swept source for axial length measurement of the eye

Applied Optics, 2009
We present and demonstrate a swept source with a large coherence length using a quasi-phase continuous tuning (QPCT) technique. QPCT is a method of minimizing the phase shift per round trip with respect to the tunable filter so that the resonance of lasing becomes high, resulting in high finesse of lasing during a rapid sweep.
Changho, Chong, Takuya, Suzuki, Kohki, Totsuka, Atsushi, Morosawa, Tooru, Sakai   +4 more
openaire   +2 more sources

Axial Eye Length Evaluation Before and After Hyperopic Photorefractive Keratectomy

Journal of Refractive Surgery, 2013
PURPOSE To test the accuracy of a new device (IOL Master; Carl Zeiss, Jena, Germany) in detecting axial eye length changes after photorefractive keratectomy (PRK). METHODS Pre- and postoperative (1, 3, and 6 months) subjective refraction and axial eye length measurements were performed in 184 consecutive eyes that underwent PRK with the Nidek EC5000 ...
ROSA, Nicola, DE BERNARDO, Maddalena, Lanza M.   +2 more
openaire   +2 more sources

Axial length and hyperopia in eyes with retinal vein occlusions

International Ophthalmology, 1997
We performed a prospective study in order to elucidate the predisposing role of axial length and hyperopia in retinal vein occlusions. The study group comprised 39 patients with unilateral central retinal vein occlusion (CRVO), 50 patients with unilateral branch retinal vein occlusion (BRVO), 13 patients with unilateral hemispheric retinal vein ...
Kir, E, Saatci, ALİ OSMAN, Berk, AYŞE TÜLİN, Ergin, MH, Kaynak, S   +4 more
openaire   +3 more sources

Peripheral Chorioretinal Lesions and Axial Length of the Myopic Eye

American Journal of Ophthalmology, 1976
A study of the retinal periphery of 1,437 predominantly myopic eyes revealed a statistically significant association of four types of peripheral chorioretinal degenerations with increased axial length of the eye. These were white without pressure, pigmentary degeneration, pavingstone degeneration, and lattice degeneration. There was a tendency for both
D B, Karlin, B J, Curtin
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Axial Eye Length Evaluation Before and After Myopic Photorefractive Keratectomy

Journal of Refractive Surgery, 2005
ABSTRACT PURPOSE: To test the accuracy of a new device (IOL Master; Carl Zeiss, Jena, Germany) in detecting axial eye length changes after photorefractive keratectomy (PRK). METHODS: Pre- and postoperative (1, 3, and 6 months) subjective refraction and axial eye length measurements were performed in 184 consecutive eyes that ...
ROSA N., LANZA, Michele, ROMANO A., CAPASSO L.   +3 more
openaire   +3 more sources