PURPOSE To obtain objective light-scattering measurements to test a hypothesis that identical PTK treatments cause distinct low- and high-level light-scattering responses in rabbit corneas. METHODS An excimer laser was used to produce identical 6-mm diameter phototherapeutic keratectomy treatments (PTK) in 32 pigmented rabbits. Eyes were treated by performing a 40-microm epithelial ablation, ...

A novel approach to reduce the multiple light scattering contribution in planar laser images of atomizing sprays is reported. This new technique, named Structured Laser Illumination Planar Imaging (SLIPI), has been demonstrated in the dense region of a hollow-cone water spray generated in ambient air at 50 bars injection pressure. The idea is based on using an incident laser sheet which is spat...

We demonstrate a technique, named dual structured laser illumination planar imaging (SLIPI), capable of acquiring depth-resolved images of the extinction coefficient. This is achieved by first suppressing the multiply scattered light intensity and then measuring the intensity reduction caused by signal attenuation between two laser sheets separated by Δz mm. Unlike other methods also able to me...

An innovative concept of twin-enhanced thermoelectricity was proposed to fundamentally resolve the high electrical resistance while not degrading the phonon scattering of the thermoelectric nanoassemblies. Under this frame, a variety of highly oriented and twinned bismuth antimony telluride (BixSb2-xTe3) nanocrystals were successfully fabricated by a large-area pulsed-laser deposition (PLD) tec...

Materials and Methods: This retrospective study was conducted at Laser Vision Center, Model Town, Lahore. It comprised of 200 patients(400 eyes) that underwent PRK on Summit Apex Plus excimer laser from 20 Feb 2004 to 3 June 2005. All consecutive patients with complete relevant data were included in the study. Three months postoperatively, the uncorrected visual acuity and complications in each...

We read the interesting article entitled: “Stereoacuity after photorefractive keratectomy in myopia” by Zarei-Ghanavati et al. As we already published, data from stereopsis tests may need special care for analysis. By nature, the results of stereoacuity tests followageometrical sequence bymultiplying at a ratio. For example, if we have 120 s of arc of stereoacuity in a subject and480 in another...

Stable isotopes in water have the potential to diagnose changes in the earth's hydrological budget in response to climate change and land use change. However, there have been few measurements in the vapour phase. Here, we present high-frequency measurements of oxygen isotopic compositions of water vapour (delta(v)) and evapotranspiration (delta(ET)) above a soybean canopy using the tunable diod...

122 Ann Dermatol Received September 13, 2016, Revised January 20, 2017, Accepted for publication February 21, 2017 Corresponding author: Sung Eun Chang, Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea. Tel: 82-2-3010-3460, Fax: 82-2-486-7831, E-mail: [email protected] This is an Open Access article ...

PURPOSE To report a corneal collagen cross-linking (CXL) mushroom shape demarcation line profile after limited Bowman's membrane removal by phototherapeutic keratectomy (PTK). METHODS Case report. RESULTS A twenty-one-year-old male with progressive keratoconus underwent mechanical epithelial debridement (at an 8.5 mm zone) followed by PTK (at a 5.0 mm zone and in a 10 μm depth) and CXL. No ...

Previous research has demonstrated that recall performance is facilitated by the order of presentation of salient stimuli, referred to as the category-order effect (Brooks & Watkins, 1990; Greene & Lasek, 1994). Specifically, recall is higher on the full list when numbers precede words. To extend and clarify this research, Experiment 1 modified Brooks and Watkins’ paradigm by presenting items a...