Femtosecond technology of myopia correction

• Published in: Oftalʼmokhirurgii͡a︡ = Ophthalmosurgery no. 2; p. 33
• Main Authors: Shchuko, A G, Pisarevskaya, O V, Bukina, V V, Iureva, T N
• Format: Journal Article
• Language: Russian
• Published: Moscow Ministerstvo Zdravookhraneniya i Social'nogo Razvitiya Rossiyskoy Federatsii FGBU MNTK Mikrokhirurgiya Glaza Imeni Akademika S.N. Fyodorova 01.04.2014
• Subjects: Eye surgery; Laser surgery; Medical technology; Myopia; Ophthalmology; Surgical outcomes
• ISSN: 0235-4160; 2312-4970

To evaluate the results of the clinical effectiveness in refractive ReLEx surgery in patients with moderate and high myopia. The study involved three groups of patients with moderate and high myopia after the Smile, FLEx, and LASIK surgery. To assess changes in parameters of cornea and visual functions a standard ophthalmic examination was performed in all patients before and after surgery in the follow-up: 1 day, 1 month and 3 months. Corneal condition was assessed using the Pentacam scan device for anterior segment (Oculus. Germany). Subjective evaluation of vision quality was determined using standard VF-14 tests according to a 5-point scale. In all groups there was a significant improvement of visual acuity after surgery. Binocular uncorrected distance vision was significantly higher on the first day after the Smile and FLEx surgery than after the excimer laser surgery. The OCT Cirrus 4000 (Carl Zeiss. Germany) examination clearly showed that fenitosecond lasers can create a superficial flap with an accurate and uniform thickness along the entire area. Keratotopogram after femtosecond surgery was more regular, and it was characterized by a pronounced homogeneity. Subjective satisfaction with visual quality after the ReLEx was higher than after excimer laser operations. During the mastering of the ReLEx technology and performing first 100 operations, serious complications associated with decreased functional results were not noted. The advantages of this ReLEx operation are a safety, painlessness, stable results, and high level of obtained visual quality, as well as opportunity to continue operation in vacuum lost, myopia correction in thin cornea, no unpleasant smells and sounds intra-operatively. which is important for appropriate behavior of the patient. Clinical results and analysis of obtained intra-operative complications indicate that femtosecond lenticule extraction is highly efficient. although technically more difficult in the period of technology mastering.