BACKGROUND The purpose of this study was to compare differences in visual outcomes, higher-order aberrations, contrast sensitivity, and dry eye in patients undergoing photorefractive keratectomy using wavefront-guided VISX CustomVue™ and wavefront-optimized WaveLight(®) Allegretto platforms. METHODS In this randomized, prospective, single-masked, fellow-eye study, photorefractive keratectomy ...

Chromosomal aberration is a phenomenon occurring relatively commonly in the development process. Chromosomal aberration is known to have various causes, and its frequency has been reported to vary particularly according to maternal age. Though different among reports, the frequency was around 0.6-0.8% in analysis with all childbirths1 and around 2-3% in case childbirths were reclassified based ...

In this paper, several innovative designs of magnetic lenses were designed, a bipolar lens with different geometries, where the outer pole arm denoted by symbol (L) was changed. With current density (6 A / m²) and after its design, geometric parameters studied in terms properties, then optical properties aberrations, i.e. coefficient spherical aberration chromatic aberration. Which led to minor...

photorefractive keratectomy (prk) is a safe and effective surgical keratorefractive technique which is done with the application of mitomycin-c (mmc) in cases of high myopia to prevent the formation of corneal haze this study was conducted to evaluate 3-year visual acuity and quality outcomes of prk-mmc in high myopia. this before-after study was conducted on 20 individuals (40 eyes) with myopi...

In modern high-numerical-aperture (NA) optical scanning instruments, such as scanning microscopes, optical data storage systems, or laser trapping technology, the beam emerging from the high-NA objective focuses deeply through an interface between two media of different refractive index. Such a refractive index mismatch introduces an important amount of spherical aberration, which increases dyn...

We considered the influence that the Stiles-Crawford effect (SCE) has on the measurement of subjective monochromatic and transverse aberration measurements. The SCE was measured with a two channel Maxwellian-viewing system. Transverse aberrations were measured using a vernier alignment technique in three subjects, with the natural SCE operating, with the SCE neutralised by filters optically con...

Many aberration detection algorithms are used in infectious disease surveillance systems to assist in the early detection of potential outbreaks. In this study, we explored a novel approach to adjusting aberration detection algorithms to account for the impact of seasonality inherent in some surveillance data. By using surveillance data for hand-foot-and-mouth disease in Shandong province, Chin...

The present investigation was undertaken to explore the Antimutagenicity activity of Terminalia chebula on micronucleus formation and chromosomal aberration assay in bone marrow cells of Swiss albino mice. The protective effect of Terminalia chebula extract is reported against cyclophosphamide (CP)-induced micronuclei formation and chromosomal aberration in mouse bone marrow cells. The doses na...