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Laser In Situ Keratomileusis: HELP
Articles from Hungary
Based on 3 articles published since 2010

These are the 3 published articles about Keratomileusis, Laser In Situ that originated from Hungary during 2010-2020.
+ Citations + Abstracts
1 Article Asymmetry between Left and Right Eyes in Keratoconus Patients Increases with the Severity of the Worse Eye. 2018

Eppig, T / Spira-Eppig, C / Goebels, S / Seitz, B / El-Husseiny, M / Lenhart, M / Papavasileiou, K / Szentmáry, N / Langenbucher, A. ·a Institute of Experimental Ophthalmology , Saarland University , Homburg/Saar , Germany. · b Department of Ophthalmology , Saarland University Medical Center UKS , Homburg/Saar , Germany. · c Dept. of Ophthalmology , Semmelweis University , Budapest , Hungary. ·Curr Eye Res · Pubmed #29558197.

ABSTRACT: PURPOSE: To evaluate whether the inter-eye asymmetry of keratoconus (KC) patients is different from a healthy control group and to investigate how asymmetry changes with increasing severity of the disease. METHODS: In this retrospective study, we included both eyes of 350 patients with KC (age 35 ± 13 years) and 68 candidates planned for refractive surgery (control group, age 37 ± 11 years). Inclusion criteria for the KC group were keratoconus in at least one eye with Pentacam Topographical Keratoconus Classification (TKC) of at least 0.5. Patients eligible for refractive surgery in both eyes were included in the control group. Corneal tomography as well as Ocular Response Analyzer measurements were compared between both groups. Subgroup analysis was performed with respect to the TKC staging. Asymmetry was provided as worse eye (defined by higher TKC) minus fellow eye. RESULTS: In the KC group, both eyes showed the same TKC staging in 30.6%, a difference of one stage in 34.0% and of two stages in 24.6% of the patients. The inter-eye asymmetry in the keratoconus group was significantly larger than that in the control group. Corneal power showed an asymmetry of 3.8 ± 4.0 D in keratoconus eyes versus 0.22 ± 0.17 D in the control group. Central corneal thickness (CCT) asymmetry was 34 ± 30 µm versus 6 ± 5 µm, respectively. The Keratoconus Match Index showed an asymmetry of 0.40 ± 0.35 versus 0.15 ± 0.14. The difference between both eyes increased with increasing TKC of the worse eye. CONCLUSIONS: Inter-eye asymmetry is larger in keratoconus than in normal eyes, and it increases with keratoconus severity in the worse eye.

2 Article Examination of ocular biomechanics with a new Scheimpflug technology after corneal refractive surgery. 2014

Hassan, Ziad / Modis, Laszlo / Szalai, Eszter / Berta, Andras / Nemeth, Gabor. ·Orbi-Dent Health and Laser Center, Debrecen, Hungary. · Department of Ophthalmology, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary. · Department of Ophthalmology, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary. Electronic address: nemeth222@yahoo.com. ·Cont Lens Anterior Eye · Pubmed #24894545.

ABSTRACT: PURPOSE: To analyze the early results of a new device measuring ocular biomechanics after corneal refractive surgery. PATIENTS AND METHODS: Thirty nine refractive surgery patients were enrolled in the study (age: 32.6±9.9 years). Laser in situ keratomileusis (LASIK) was performed on 52 eyes of 26 patients and photorefractive keratectomy (PRK) was done on 26 eyes of 13 patients. Ten device-specific biomechanical parameters, intraocular pressure (IOP) and pachymetry were measured preoperatively and at day 1, week 1 and month 1 after the surgeries with a new technology based on Scheimpflug imaging (CorVis ST, Oculus). RESULTS: In case of LASIK, the day after the procedure, radius values showed significant differences compared to preoperative data. One month after surgery, radius values, velocity of the second applanation and pachymetry showed significant differences compared to preoperative data. In case of PRK, the day after the procedure, significant differences in IOP, maximum amplitude at the apex, A1 time, A2 velocity and highest concavity time were measured. After 1 month of PRK, there were no differences in the parameters compared to preoperative data except pachymetry. CONCLUSIONS: We observed that some specific biomechanical parameters changed measured with CorVis ST after LASIK and PRK, in the early postoperative time. However, most of these parameters remain unchanged after one month of LASIK and PRK compared to preoperative data.

3 Article Assessment of tear osmolarity and other dry eye parameters in post-LASIK eyes. 2013

Hassan, Ziad / Szalai, Eszter / Berta, Andras / Modis, Laszlo / Nemeth, Gabor. ·Orbi-Dent Health and Laser Center, Debrecen, Hungary. zhassan@dote.hu ·Cornea · Pubmed #23665645.

ABSTRACT: PURPOSES: To assess the tear osmolarity using the TearLab device after laser in situ keratomileusis (LASIK) and to compare the values with those obtained by traditional tear film tests before and after the procedure. METHODS: Thirty eyes of 15 refractive surgery candidates (5 men and 10 women of mean age: 30.55 ± 11.79 years) were examined. Using a special questionnaire (Ocular Surface Disease Index), subjective dry eye complaints were evaluated, and then, the tear osmolarity was measured with the TearLab system (TearLab Corporation) and conventional dry eye tests were carried out. Examinations were performed preoperatively and at 1, 30, and 60 days after the surgery. RESULTS: The mean value of tear osmolarity was 303.62 ± 12.29 mOsm/L before the surgery and 303.58 ± 20.14 mOsm/L at 60 days after the treatment (P = 0.69). Mean lid parallel conjunctival folds value was 0.68 ± 0.68 before the procedure and 0.58 ± 0.65 subsequent to surgery (P = 0.25). Meibomian gland dysfunction was not detected. No significant deviation was observed in the values of Schirmer test, corneal staining, tear break-up time, and lid parallel conjunctival folds when compared with postoperatively obtained values during the follow-up period (P > 0.05). CONCLUSIONS: During LASIK flap creation, intact corneal innervation is damaged, and the ocular surface lacrimal functional unit can be impaired. In our study, no abnormal dry eye test results were observed before or after the procedure. Based on our results, LASIK treatment is safe for dry eye involving the administration of adequate artificial tears for a minimum of 3 months.