Glued intrascleral haptic fixation of an intraocular lens
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Abstract:
Glued intrascleral haptic fixation of an intraocular lens (glued IOL) has evolved as a technique with various modifications that are adopted and practiced by several surgeons. With adequate and appropriate haptic tuck, glued IOL imparts a stable IOL fixation and is a secured method of secondary IOL placement with no pseudophacodonesis.Keywords:
Intraocular lenses
About 35% of intraocular lenses now implanted in the United States are narrow profile lenses, measuring on the average 5.0 mm by 6.0 mm. This study sought to determine whether these lenses cause unwanted optical images with a decrease in the quality of vision. Seventy-five eyes with a 5.0 mm × 6.0 mm intraocular lens (IOL) were compared with 75 eyes with a 6.5 mm IOL. All patients had capsulorhexis, phacoemulsification, and capsular fixation of the IOL. There was no statistically significant difference in unwanted visual images (16% and 20%, respectively), ability to drive at night (79% and 69%), or patient satisfaction. Careful patient selection is, however, important.
Intraocular lenses
Capsulorhexis
Multifocal intraocular lens
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Intraocular lenses
Interim
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Glued intrascleral haptic fixation of an intraocular lens (glued IOL) has evolved as a technique with various modifications that are adopted and practiced by several surgeons. With adequate and appropriate haptic tuck, glued IOL imparts a stable IOL fixation and is a secured method of secondary IOL placement with no pseudophacodonesis.
Intraocular lenses
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This review provides an update of recent advances in understanding the quality and functional significance of contrast sensitivity for the clinician regarding cataract, intraocular lenses and refractive surgery that goes beyond the measurement of visual acuity.New American National Standards Institute standards for contrast sensitivity based on linear sine-wave gratings are discussed that promise rapid advances of understanding and quantifying visual quality and function by unifying clinical results reported using contrast sensitivity. Increased sensitivity of linear sine-wave gratings over proposed bull's-eye radial gratings is discussed. Digital-image-processing software uses contrast sensitivity data to process images to help understand the quality of what the patient sees. Contrast sensitivity measurement is compared with wavefront aberrometry. Contrast sensitivity measures the total visual system quality in terms of contrast, whereas wavefront aberrometry measures the optical quality in terms of spatial distortion. Both measurements are needed to more fully understand the quality of vision.Recent advances provide the clinician with an awareness of why the new contrast-sensitivity standards are based on linear sine-wave gratings and how image-processing software can be used to better understand the quality of functional vision of the patient.
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Surgical incision
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The review of domestic and foreign literature sources examining different methods of fixation of posterior chamber intraocular lenses after phacoemulsification of cataract, complicated capsular support of the lens is presented. There is a sufficiently widespread of transscleral suturing of the IOL and the prospect of developing IOL fixation in corneal layers.
Intraocular lenses
Capsule
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As cataract surgery transforms into refractive surgery, functional intraocular lens (IOL) emerged and gradually satisfied expectations of most cataract patients, which have become parts of cataract surgery significantly. So far, functional intraocular lens are still not perfect, whose limitation should draw the attention of ophthalmologists. In our review, we take Toric IOL, asphric IOL and IOL for correction of presbyobia for examples to elaborate the limitations of the functional IOL respectively.
Key words:
Lenses,intraocular; Limitation; Cataract
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Intraocular lenses
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In this paper we compare 4 groups of intraocular lenses: PMMA, silicone, hydrogel, acrylic and their influence on posterior capsule opacification is discussed. The possible clinical consequences of different shape in optic part of intraocular lens is also described. This article contains also a short presentation of posterior capsule opacification mechanism and intraocular lens materials biocompatibility in in-vivo and in-vitro experiments.
Posterior Capsule Opacification
Intraocular lenses
Capsule
Lens capsule
Biocompatibility
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Intraocular lenses
Presentation (obstetrics)
Cataract extraction
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