Results 31 to 40 of about 533 (174)
Photonics, 2014 Infrared RetinoscopyRetinoscopy could be a more effective and versatile clinical tool in observing a wide range of ocular conditions if modifications were made to overcome the inherent difficulties.
Ying-Ling Chen +3 more
doaj +1 more source
Clinical and Experimental Optometry, Volume 103, Issue 3, Page 353-360, May 2020., 2020 Background Comprehensive vision screening programmes for children are an important part of public health strategy, but do not exist in many countries, including Tonga. This project set out to assess: (1) the functional vision of children attending primary schools in Tonga and (2) how a new recognition acuity test (The Auckland Optotypes displayed on a ...
Lisa M Hamm +7 more
wiley +1 more source
Indian Journal of Ophthalmology, 2012 Context : Pediatric cataract surgery is traditionally done with the aid of high-molecular-weight viscoelastics which are expensive. It needs to be determined if low-cost substitutes are just as successful.
R Muralidhar +2 more
doaj +1 more source
Indian Journal of Ophthalmology, 2019 Purpose: To describe estimation dynamic distance direct ophthalmoscopy (eDDDO) and compare it with the monocular estimation method of dynamic retinoscopy (eDR) for the assessment of accommodation in children.
Mihir Kothari +5 more
doaj +1 more source
Principles and practice of external digital photography in ophthalmology
Indian Journal of Ophthalmology, 2012 It is mandatory to incorporate clinical photography in an ophthalmic practice. Patient photographs are routinely used in teaching, presentations, documenting surgical outcomes and marketing.
Bipasha Mukherjee +1 more
doaj +1 more source
Features of the defect structure of a LiNbO3:Cu (0.015 wt.%) single crystal
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023 By direct alloying of melt with copper oxide, а compositionally uniformity LiNbO3:Cu (0,015 wt%) single crystal doped with a photovoltaically active copper dopant has been grown.
N.A. Teplyakova +2 more
doaj +1 more source
Indian Journal of Ophthalmology, 2012 The potential usefulness of smartphones in the medical field is evolving everyday. This article describes various tools available on smartphones, largely focusing on the iPhone, for the examination of an ophthalmic patient, for patient and physician ...
Jay Chhablani, Simon Kaja, Vinay A Shah
doaj +1 more source
Defective structure and photorefractive properties of double doped crystals LiNbO3 : Fe : Mg and LiNbO3 : Fe : Zn [PDF]
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2018 A comparative analysis of photorefractive properties was carried out for congruent, stoichiometric and double doped lithium niobate crystals: LiNbO3 : Fe(0,009) : Mg(5,04) and LiNbO3 : Fe(0,02) : Zn(4,34) mol %.
N.A. Teplyakova +2 more
doaj +1 more source
Photorefractive Keratectomy in Keratoconus [PDF]
Case Reports in Ophthalmology, 2015 <b><i>Purpose:</i></b> To assess the efficacy and safety of topography-guided photorefractive keratectomy (PRK) for keratoconus and to estimate the subsequent risk of progression. <b><i>Methods:</i></b> This is a retrospective follow-up study. Between 1998 and 2013, 28 eyes of 23 patients (age 17-60) with
Deepali Sandeep Tambe +2 more
openaire +4 more sources
Nanophotonics, Volume 14, Issue 26, Page 4761-4771, December 2025.Abstract Periodically poled thin‐film lithium niobate (TFLN) crystals are the fundamental building block for highly‐efficient quantum light sources and frequency converters. The efficiency of these devices is strongly dependent on the interaction length between the light and the nonlinear material, scaling quadratically with this parameter ...
Laura Bollmers +5 more
wiley +1 more source