Axial Length and Anterior Segment Alterations in Former Preterm Infants and Full-Term Neonates Analyzed With Scheimpflug Imaging

Conclusions: This study demonstrated altered axial length and anterior segment morphology in former preterm infants, especially in the first years of life. In addition, we observed that preterm infants seemed to catch up, so that the differences in ocular growth in terms of spherical equivalent, astigmatism, and axial length decreased within the first 8 years of life.
Source: Cornea - Category: Opthalmology Tags: Clinical Science Source Type: research

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ConclusionsIn manifest conditions, the accuracy of the 2Win and plusoptiX A12R refractometers is low in hyperopia and astigmatism, but the devices are well correlated with each other, and both have high specificity and low sensitivity in hyperopia, resulting in the underestimation of hyperopic refractive error. The optional Plusoptix sensitive referral criteria seems to be appropriate for the A12R. The 2Win provided fewer inconclusive results and was preferred for use with younger and developmentally delayed children.
Source: Journal of American Association for Pediatric Ophthalmology and Strabismus - Category: Opthalmology Source Type: research
Publication date: Available online 12 September 2019Source: Journal of American Association for Pediatric Ophthalmology and StrabismusAuthor(s): Gayathri Srinivasan, Diane Russo, Christopher Taylor, Anthony Guarino, Paulette Tattersall DipPharm, Bruce MooreAbstractPurposeTo evaluate the Spot Vision Screener in detecting targeted vision disorders compared to cycloplegic retinoscopy in children
Source: Journal of American Association for Pediatric Ophthalmology and Strabismus - Category: Opthalmology Source Type: research
AbstractThree-dimensional analyses of optical aberrations of metasurface flat lenses are presented via ray tracing. The ray tracing is performed on the basis of anomalous refraction/reflection law specialized for metasurface instead of conventional Snell law. Relationship between spherical aberration and working distance, feature of chromatic aberration, astigmatism in meridian, and sagittal directions are analyzed numerically to fully reveal the aberration characteristics. Through the curve descriptions of geometric point spread function (PSF) and the modulation transfer function (MTF), the influence of monochrome aberrat...
Source: Plasmonics - Category: Biomedical Science Source Type: research
Conclusion: Over 40% of the patients undergoing cataract surgery enrolled in this study had more than 1.0 D of corneal astigmatism and may benefit from the use of toric intraocular lenses. These data can be useful for planning to make this technology available fo r patients.RESUMO Objetivo: Avaliar a preval ência do astigmatismo corneano antes da cirurgia de catarata em pacientes brasileiros. Métodos: Este estudo transversal de base clínica foi realizado no Hospital Federal de Bonsucesso, Rio de Janeiro, Brasil. Os prontuários de pacientes submetidos à cirurgia de catarata durante um per&i...
Source: Arquivos Brasileiros de Oftalmologia - Category: Opthalmology Source Type: research
Purpose: To evaluate the efficacy, predictability, and safety of combined corneal collagen cross-linking (CXL), intracorneal ring segment (ICRS) implantation, and superficial phototherapeutic keratectomy (PTK) in patients with keratoconus. Methods: Fifty-five eyes received ICRS implantation, followed by CXL and PTK combination treatment. Patients were followed up for 6 months. Primary outcomes included Logarithm of the Minimum Angle of Resolution (LogMAR) uncorrected distance VA (UDVA) and corrected distance VA (CDVA), sphere, cylinder, mean spherical equivalent, index of surface variance, index of vertical asymmetry,...
Source: Cornea - Category: Opthalmology Tags: Clinical Science Source Type: research
Publication date: Available online 4 September 2019Source: Progress in Retinal and Eye ResearchAuthor(s): Andri K. Riau, Yu-Chi Liu, Gary H.F. Yam, Jodhbir S. MehtaAbstractStromal keratophakia was first performed by José Ignacio Barraquer in the 1960s. The refractive lamellar keratoplasty technique was intensely pursued in the 1980s as a method to alter corneal refractive power. However, because sculpting of the donor stromal lenticule and lamellar keratectomy of the recipient's cornea were performed with a mechanical microkeratome, the quality of the cut was inconsistent. Consequently, the refractive outcomes of th...
Source: Progress in Retinal and Eye Research - Category: Opthalmology Source Type: research
Publication date: Available online 4 September 2019Source: Progress in Retinal and Eye ResearchAuthor(s): Andri K. Riau, Yu-Chi Liu, Gary H.F. Yam, Jodhbir S. MehtaAbstractStromal keratophakia was first performed by José Ignacio Barraquer in the 1960s. The refractive lamellar keratoplasty technique was intensely pursued in the 1980s as a method to alter corneal refractive power. However, because sculpting of the donor stromal lenticule and lamellar keratectomy of the recipient's cornea were performed with a mechanical microkeratome, the quality of the cut was poor and inconsistent. Consequently, the refractive outco...
Source: Progress in Retinal and Eye Research - Category: Opthalmology Source Type: research
Conclusion Patients with stage 2 or higher ROP remain at significant risk for ophthalmological morbidity through 2 years of age. Infants with regression of subthreshold ROP who do not require treatment represent an underrecognized population at long-term ophthalmological risk. ClinicalTrials.gov Identifier NCT01559571. [...] Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals: Table of contents  |  Abstract  |  Full text
Source: American Journal of Perinatology - Category: Perinatology & Neonatology Authors: Tags: Original Article Source Type: research
Publication date: Available online 28 August 2019Source: Journal of OptometryAuthor(s): David T.C. Lin, Simon P. Holland, Shwetabh Verma, John Hogden, Samuel Arba-MosqueraAbstractPurposeTo investigate immediate and short-term visual recovery in a large cohort of 2093 myopic eyes (with or without astigmatism) treated with SmartSurfACE procedure, a combination of Transepithelial Photo Refractive Keratectomy (PRK) and Smart Pulse Technology (SPT, SCHWIND eye-tech-solutions GmbH, Kleinostheim, Germany).MethodsIn this retrospective case series, post-operative outcomes were evaluated immediately after the surgery (Day 0), at day...
Source: Journal of Optometry - Category: Opthalmology Source Type: research
Conditions:   Myopia;   Astigmatism Intervention:   Device: Visumax spherocylindrical treatment Sponsors:   United States Naval Medical Center, San Diego;   Carl Zeiss Meditec, Inc. Recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
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