scholarly journals On Classification and Application of Monovision Technique for Excimer Laser Correction and on Possible of Preliminary Target Refraction Modeling in Patients with Primary Myopia, Astigmatism, Anisometropia and Presbyopia

2020 ◽  
Vol 17 (4) ◽  
pp. 739-745
Author(s):  
E. I. Belikova ◽  
T. V. Perova
Keyword(s):  
Excimer Laser ◽  
Contact Lenses ◽  
Careful Examination ◽  
Refractive Errors ◽  
Soft Contact ◽  
Visual Rehabilitation ◽  
Planning Stage ◽  
Soft Contact Lenses ◽  
Number Of Patients ◽  
Target Refraction

The combination of such refractive errors as high and medium astigmatism with anisometropia and presbyopia considerably reduces patients’ standard of living, first of all because methods of the correction stated are very limited. Spectacle correction is, as a rule, extremely uncomfortable or impossible in case of an anisometropia of more than 2.0 dioptres and a high degree of astigmatism; opportunities of contact lenses correction are limited in case of an astigmatism of more than 2.5 dioptres. Therefore these patients are often deprived of adequate visual rehabilitation and prefer not to use means of optical vision correction at all which considerably lowers their quality of life and can be the reason of asthenopia, violation of binocular vision and decrease in fusional reserves. This problem is aggravated with the development of a presbyopia when patients get older. The first manifestations of it reveal themselves in such patients earlier than in emmetrops, their age-mates. Excimer laser technology development has made it possible to help a large number of patients with the most severe refractive disorders, but these techniques still have significant limitations in patients with presbyopia, especially in case of a patient’s strong need for keen eyesight at a close distance. In addition, these patients require a particularly careful examination and preliminary modeling of target refraction at the planning stage of a surgical intervention, for which we use soft contact lenses in our practice. Target refraction modeling with spectacle lenses does not always allow to adequately predict the patient satisfaction with the results of correction. We consider the method of target refraction modeling using soft contact lenses to be the most accurate for this objective; it is widely used in our clinic. This technique is especially effective in patients with presbyopia, who are planning excimer laser correction of the most common types of refractive errors. The article presents a clinical case of binocular excimer laser correction of a high and medium degree compound myopic astigmatism in a patient with anisometropia and presbyopia, which was performed in two stages using LASIK (Custom Q) technology after the preliminary target refraction modeling with the use of soft contact lenses.

Hard and soft contact lenses: a comparison

1974 ◽  
Vol 12 (25) ◽  
pp. 97-99
Keyword(s):  
Contact Lenses ◽  
Refractive Errors ◽  
Soft Contact ◽  
Soft Contact Lenses

Contact lenses may be used to correct refractive errors, to treat diseased eyes, and to improve the appearance of disfigured eyes. Hard and soft lenses are now available. They have different properties and their relative merits depend upon the purpose for which the lens is required.

scholarly journals Refractive Use of Intrastromal Corneal Rings in Penetrating Keratoplasty

2017 ◽  
Vol 1 (2) ◽  
Keyword(s):  
Excimer Laser ◽  
Contact Lenses ◽  
Postoperative Management ◽  
Intraocular Lenses ◽  
Refractive Errors ◽  
Simple Fact ◽  
Visual Rehabilitation ◽  
Single Plane ◽  
Wide Range ◽  
Good Transparency

Intrascleral ring implants appeared in the 1950s with the aim of altering the curvature of the cornea promoting the correction of refractive errors. More recently, corneal rings have become more important in ophthalmology for the remodeling of irregular corneas, in which the excimer laser would be contraindicated. Corneal transplants have several indications and currently have a wide range of options depending on the underlying pathology. The postoperative management of keratoplasty, especially regarding refractive errors, can be very difficult. Some situations, such as anisometropia and intolerance of contact lenses, require surgical procedures for visual rehabilitation. Among the surgical option have the procedures with use the excimer laser, when the biomechanical conditions of the cornea allow, and in specific cases of contraindication the possibility of using the intrastromal ring implants, or even implants of intraocular lenses (phakic or pseudophakic). In 2011, the studies were started using large arc length segments with very positive results. They have numerous advantages among them the maintenance of every implant in a single plane allowing greater regularity of the surface of the cornea and with the advent of femtosecond laser the implant of these segments became possible. The option of a ring implant is based on the fact that the procedure has the possibility of being reversible without corneal consumption. Keratoplasty is aimed at obtaining the visual rehabilitation of the patients, so the simple fact of obtaining a good transparency of the corneal button can not be considered as success, therefore the final visual acuity should always give the final word on the result.

scholarly journals Contact Lens Visual Rehabilitation in Keratoconus and Corneal Keratoplasty

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Yelda Ozkurt ◽  
Mehmet Atakan ◽  
Tugba Gencaga ◽  
Sezen Akkaya
Keyword(s):  
Contact Lens ◽  
Contact Lenses ◽  
Soft Contact ◽  
Visual Rehabilitation ◽  
Adequate Treatment ◽  
Contact Lens Wear ◽  
Soft Contact Lenses ◽  
Thinning Process ◽  
Lens Wear ◽  
Spectacle Correction

Keratoconus is the most common corneal distrophy. It’s a noninflammatory progressive thinning process that leads to conical ectasia of the cornea, causing high myopia and astigmatism. Many treatment choices include spectacle correction and contact lens wear, collagen cross linking, intracorneal ring segments implantation and finally keratoplasty. Contact lenses are commonly used to reduce astigmatism and increase vision. There are various types of lenses are available. We reviewed soft contact lenses, rigid gas permeable contact lenses, piggyback contact lenses, hybrid contact lenses and scleral-semiscleral contact lenses in keratoconus management. The surgical option is keratoplasty, but even after sutur removal, high astigmatism may stil exists. Therefore, contact lens is an adequate treatment option to correct astigmatism after keratoplasty.

scholarly journals Soft-contact-lenses-induced complications

2008 ◽  
Vol 65 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Gordana Suvajac
Keyword(s):  
Contact Lens ◽  
Vision Loss ◽  
Contact Lenses ◽  
Tear Film ◽  
Video Camera ◽  
Conjunctival Hyperemia ◽  
Soft Contact ◽  
Soft Contact Lenses ◽  
Soft Contact Lens ◽  
Number Of Patients

Background/Aim. Soft contact lenses occupy significant place in ophthalmology, both in the correction of refraction anomalies and in the treatment of many eye diseases. The number of patients that wear soft contact lenses for the purpose of correcting ametropia is constantly increasing. Due to the increasing number of wearers, the percentage of complications that can lead to serious eye damage and serious vision loss is also increasing. The aim of this study was to point out the most common complications related to soft contact lens use. Methods. In the period from 1995?2004 this prospective study included 510 patients wearing soft contact lenses for correcting ametropia. None of the patients wore contact lenses before and none suffered from any system or local diseases that could affected the development of eventual complications. The study took seven years with the patients who wore conventional lenses and three years with those who wore replacement contact lenses. All the necessary ophthalmologic examinations were done (visual acuity, refractokeratometry, the quantity of tear film, biomicroscopic examination of anterior eye segment). All the complications were filmed by video camera. Results. Of all the patients, 19 had blepharitis, 73 suffered from ?dry eye?, 57 had conjunctival hyperemia, 12 had conjunctivitis, 34 had gigantopapillary conjunctivitis (GPC), 93 had punctiform epitheliopathy, 20 had corneal infiltration, one patient had keratitis, 91 had corneal vascularisation, and 95 patients had corneal deposits. Conclusion. Both the type and frequency of complications related to soft contact lens use in our group of patients, proved to be significant. Some of this complications (keratitis) can significantly damage vision and lead to loss of vision and sometimes can require operative treatment.

scholarly journals The Relationship of Knowledge Level of Installation and Maintenance with the Successful Use of Soft Contact Lens in Myopia patients

2021 ◽  
Vol 15 (6) ◽  
pp. 1562-1564
Author(s):  
Didik Wahyudi ◽  
J Dahjono ◽  
Untung Suparman
Keyword(s):  
Contact Lens ◽  
Contact Lenses ◽  
Refractive Errors ◽  
Soft Contact ◽  
Cross Sectional ◽  
Soft Contact Lenses ◽  
Soft Contact Lens ◽  
Level Of Knowledge ◽  
The Right ◽  
The Relationship

Background: Refractive errors have occurred in many parts of the world, including in Indonesia, with different types of abnormalities, one of which is myopia which can be corrected with glasses and spherical contact lenses. Aim: To determine the relationship between the level of knowledge of the installation and care of soft contact lenses in myopic patients. Methods: This research method is Cross Sectional at Optik Metro, the number of samples is the total population, the research instrument is a questionnaire, the independent variable of this research is the level of knowledge while the dependent variable is the attitude and behavior of Care and Installation with Successful Use of Contact Lenses. This research has been approved by the Widya Husada STIKES Ethics Commission. Results: The results of the study based on the number of sufferers and the distribution of refractive errors at Optik Metro from March 15-20, 2021, showed that the number of myopia patients who came was 13.0% with the type of treatment using soft contact lenses as much as 2.2%. There is a relationship between knowledge and attitudes of respondents with maintenance and installation behavior with successful use of LK with a significance value of 0.000 (p < 0.05). Conclusion: It was concluded that the toric soft contact lens installation procedure was carried out in the right way by taking into account a good fitting assessment. It is necessary to provide education to increase knowledge and education on Care and Installation of Contact Lenses for all customers. Keywords: Knowledge, Attitude, Soft LK, Myopia

Peculiarities of cultivation of the monolayer of fetal fibroblasts on the soft contact lenses, with contain the collagen

2009 ◽  
Vol 21 (5) ◽  
pp. 46-50
Author(s):  
N. Pasechnikova ◽  
◽  
G. Drozhzhina ◽  
O. Ivanova ◽  
I. Nasinnik ◽  
...  
Keyword(s):  
Contact Lenses ◽  
Soft Contact ◽  
Soft Contact Lenses ◽  
Fetal Fibroblasts

Modification of therapeutic silicone-hydrogel soft contact lenses

2016 ◽  
Vol 16 (3) ◽  
pp. 117-120 ◽  
Author(s):  
T.N. Safonova ◽  
◽  
I.A. Novikov ◽  
V.I. Boev ◽  
O.V. Gladkova ◽  
...  
Keyword(s):  
Contact Lenses ◽  
Soft Contact ◽  
Silicone Hydrogel ◽  
Soft Contact Lenses

scholarly journals Myopia Control with Combination Low-Dose Atropine and Peripheral Defocus Soft Contact Lenses: A Case Series

2021 ◽  
pp. 548-554
Author(s):  
Nir Erdinest ◽  
Naomi London ◽  
Nadav Levinger ◽  
Yair Morad
Keyword(s):  
Low Dose ◽  
Contact Lenses ◽  
Case Series ◽  
Concentric Circle ◽  
Retrospective Case ◽  
Soft Contact ◽  
Myopia Progression ◽  
Soft Contact Lenses ◽  
Center Distance ◽  
Myopia Control

The goal of this retrospective case series is to demonstrate the effectivity of combination low-dose atropine therapy with peripheral defocus, double concentric circle design with a center distance soft contact lenses at controlling myopia progression over 1 year of treatment. Included in this series are 3 female children aged 8–10 years with progressing myopia averaging −4.37 ± 0.88 D at the beginning of treatment. Their average annual myopic progression during the 3 years prior to therapy was 1.12 ± 0.75 D. They had not attempted any myopia control treatments prior to this therapy. The children were treated with a combination of 0.01% atropine therapy with spherical peripheral defocus daily replacement soft lenses MiSight<sup>®</sup> 1 day (Cooper Vision, Phoenix, AZ, USA). They underwent cycloplegic refraction, and a slit-lamp evaluation every 6 months which confirmed no adverse reactions or staining was present. Each of the 3 children exhibited an average of 0.25 ± 0.25 D of myopia progression at the end of 1 year of treatment. To the best of the authors’ knowledge, this is the first published study exhibiting that combining low-dose atropine and peripheral defocus soft contact lenses is effective at controlling children’s moderate to severe myopia progression during 1 year of therapy.

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