Corneal Irregular Astigmatism and Curvature Changes After Small Incision Lenticule Extraction: Three-Year Follow-Up

Purpose: To evaluate the long-term changes in anterior and posterior corneal irregular astigmatism and curvatures after small incision lenticule extraction (SMILE). Methods: Fifty eyes of 28 patients underwent SMILE for myopic astigmatism. All procedures were performed using the VisuMax® femtosecond laser. A Scheimpflug camera was used for preoperative and 3-year postoperative tomography. Anterior and posterior corneal Fourier parameters (spherical component, regular astigmatism, asymmetry, and irregularity) and curvature data were evaluated and compared within 2 subgroups according to the magnitude of the refractive correction (low myopia group: spherical equivalent (SEQ) ≥ −6 D; high myopia group: (SEQ)
Source: Cornea - Category: Opthalmology Tags: Clinical Science Source Type: research

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Publication date: 5 October 2019Source: New Scientist, Volume 243, Issue 3250Author(s): I wear spectacles to correct for myopia and astigmatism. Is it possible to create a program to adjust the image of a TV, mobile or PC monitor using my optical prescription such that I could view it without spectacles?
Source: New Scientist - Category: Science Source Type: research
CONCLUSIONS: Ophthalmological morbidities in premature infants such as refractive errors and strabismus are high in addition to complications like ROP. The incidence of these conditions is more in infants with ROP when compared to non-ROP group.
Source: Middle East African Journal of Ophthalmology - Category: Opthalmology Authors: Source Type: research
Conclusions: Our findings suggest that femto-LASIK on eyes with prior FLEK is safe and effective in improving visual acuity and reducing residual astigmatism. PMID: 31559093 [PubMed]
Source: Journal of Ophthalmology - Category: Opthalmology Tags: J Ophthalmol Source Type: research
The prevalence of myopia is much higher than hyperopia. Hence, there are relatively few studies investigating phakic intraocular lens (pIOL) implantation for the correction of hyperopia. This review aimed to summarize the available relevant literature on the efficacy and safety of pIOL implantation for the correction of hyperopia and hyperopic astigmatism. At present, two types of pIOLs are used to correct hyperopia and hyperopic astigmatism: anterior chamber iris-fixated pIOLs and posterior chamber implantable collamer lenses.
Source: Journal of Cataract and Refractive Surgery - Category: Opthalmology Authors: Tags: Review/Update 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
Rationale: To report the visual status and results of phacoemulsification cataract surgery in a young patient with Alport syndrome associated with bilateral anterior lenticonus. The milestone of this report is the use of anterior segment optical coherence tomography (AS-OCT) to confirm the central protrusion of the anterior surface of the crystalline lens. Patient concerns: A 23-year-old young woman presented with severe progressive visual loss in both eyes, which started several years ago. Diagnoses: Refractive status was indicative of high myopia with astigmatism and vision was not improved with optimal correctio...
Source: Medicine - Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research
Small incision lenticule extraction (SMILE) was introduced in the recent decade for the treatment of myopia and myopic astigmatism. This flap-free technique has a high efficacy and safety profile and also carries potential advantages over laser in situ keratomileusis such as a better corneal biomechanical stability, reduction in dry eyes rate, and the avoidance of flap complications. However, there have been concerns regarding the precision of astigmatism correction that undercorrection has been reported to be apparent. Various factors that affect astigmatism correction have been identified in the literature. The purpose o...
Source: Asia-Pacific Journal of Ophthalmology - Category: Opthalmology Tags: Review Article Source Type: research
In this study, we review the published clinical outcomes of high myopia correction and exploration in hyperopia correction. Results have suggested that SMILE has acceptable outcomes in correction for high myopia
Source: Asia-Pacific Journal of Ophthalmology - Category: Opthalmology Tags: Review Article 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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