Correction of astigmatism on the thin cornea with the femtosecond laser
Ophthalmology
View Archive Info| Field | Value | |
| Title |
Correction of astigmatism on the thin cornea with the femtosecond laser
Первые результаты коррекции миопического астигматизма при помощи фемтосекундного лазера у пациентов с тонкой роговицей |
|
| Creator |
S. Kostenev V.
С. Костенёв В.; Новосибирский филиал ФГУ «МНТК «Микрохирургия глаза» им. акад. С.Н. Федорова Росмедтехнологии», Новосибирск, Россия |
|
| Subject |
astigmatical keratotomy; femtosecond laser; cornea
стигматическая кератотомия; фемтосекундный лазер; роговица |
|
| Description |
Purpose: to examine the efficacy and safety of arcuate incisions using a femtosecond laser for the treatment of astigmatism at patient with a thin cornea.Methods: this retrospective study included 10 eyes of 6 patients after astigmatical keratotomy (AK). Preoperatively and 1, 3, 6 months after surgery, a full ophthalmic examination was performed. AK was done using the Femtec 520F fs laser system (technolas Perfect Vision). Pre- and postoperative complete ophthalmic examination including uncorrected and best spectacle corrected visual acuity, corneal topogra- phy Zyotix (Bausch&Lomb), OCt (Optovue) was done.Results: Mean preoperative astigmatism was 3.75±0.51 D, thickness was 470 ± 26 μm, BCVA was 0.74 ± 0.12. At all patients the high visual acuity, corresponding the maximal visual acuity with correction before operation has been achieved. three months after surgery UCVA was 0.65±0.25, BSCVA was 0.85±0.15 with –0.55±0.25 D SE. Postoperative subjective manifest cylinder was mean –0.75±0.5 D, topographic astigmatism was mean 1.25±0.5 D. Full neutralisation corneal astigmatism is reached in 70%. No intraoperative or postoperative adverse events were seen during the follow-up period.Conclusion: thus, spending АК cuts with precision accuracy on depth, the form and length by FS laser, we considerably reduce risk of operational complications. Also substantially we raise clinical accuracy, safety and efficiency of the given method in correction corneal astigmatism, in comparison with classical tangential keratotomy. In clinical situations when the thickness of a cornea does not allow to spend safely and effectively excimer laser ablation the given technology is, as a matter of fact, a unique variant of possible correction astigmatism.
Цель. Оценить безопасность и эффективность астигматической кератотомии при помощи фемтосекундного (ФС) лазера у па- циентов с тонкой роговицей.Методы. Оценивали результаты 10 операций у 6 пациентов с астигматической кератотомией (АК). Астигматические дугообраз- ные разрезы роговицы — «арки» выполняли при помощи ФС лазерной установки Femtec 520F (technolas Perfect Vision, Germany). До и после операции проводили визометрию, кератотопографию роговицы выполняли на комбинированной диагностической станции«Zyoptix» (Baush & Lomb), OКt — исследование проводили на приборе спектрального принципа действия RtVue-100 (Optovue, США). Результаты. Среднее значение дооперационного астигматизма составило 3,75±0,51 D. Среднее значение толщины роговицы составило 470 ± 26 μm. Через месяц после операции уменьшение астигматизма составило в среднем 2,75±1,25 D, острота зрениябез коррекции составила 0.65 ± 0.25, с коррекцией — 0.85 ± 0.15. остаточный астигматизм спустя 3 месяца от 0,5 до 0,75 D наблю- дался у 3 пациентов, в двух случаях отмечалась остаточная миопия слабой степени. Полная нейтрализация роговичного астигма- тизма достигнута в 70%.Заключение. Проведение астигматической кератотомии с целью коррекции миопического астигматизма у пациентов с тонкой роговицей при помощи ФС лазерной установки эффективно и безопасно. |
|
| Publisher |
Ophthalmology
Офтальмология |
|
| Contributor |
—
— |
|
| Date |
2014-07-14
|
|
| Type |
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion — — |
|
| Format |
application/pdf
|
|
| Identifier |
http://www.ophthalmojournal.com/index.php/opht/article/view/130
|
|
| Source |
Ophthalmology; Том 9, № 2 (2012); 15-17
Офтальмология; Том 9, № 2 (2012); 15-17 1816-5095 |
|
| Language |
rus
|
|
| Relation |
http://www.ophthalmojournal.com/index.php/opht/article/view/130/123
|
|
| Rights |
Authors who publish with this journal agree to the following terms:Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
|
|