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    Evaluation of corneal biomechanical properties after uneventful standard coaxial phacoemulsification surgery
    (2018) Cankaya, Cem; Ulas, Fatih; Doganay, Derya; Firat, Penpegul; Doganay, Selim
    Aim: This study was designed to investigate the alteration of intraocular pressure measurements and biomechanical properties of the cornea in patients who underwent uneventful standard coaxial phacoemulsification cataract surgery through 2.75 mm corneal main incision with intraocular lens implantation. Material and Methods: 15 eyes of 15 patients admitted to our clinic because of the cataract problems in the study. Corneal hysteresis (CH), corneal resistance factor (CRF) measurements, Goldmann correlated (IOPg), and corneal compensated intraocular pressure (IOPcc) values were recorded by ocular response analyzer (ORA) before and 1 day, 1 week and 1 month after surgery. Results: The mean age of the patients was 64.3 ± 8.06 years. Preoperative mean CH, CRF, IOPg and IOPcc values were 8.23±2.10, 9.33±2.27, 18.54±3.42 and 19.66±3.22, respectively. The mean CH, CRF, IOPg and IOPcc values were 5.50±2.07, 8.69±2.04, 22.29±3.37 and 23.83±3.32, respectively on the first day after the surgery. The mean CH, CRF, IOPg and IOPcc values were 5.25±1.83, 8.29±2.10, 18.86±2.72 and 20.20±3.37, respectively of the first week after the surgery. The mean CH, CRF, IOPg and IOPcc values were 7.88±1.99, 8.37±1.83, 15.81±2.60 and 16.41±2.80, respectively in the first month after the surgery. Conclusion: These results revealed that the biomechanical properties of the cornea may change during the first one month period after uneventful standard coaxial phacoemulsification surgery
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    Öğe
    Evaluation of retinal and choroidal thickness in various age groups
    (2018) Celik, Fatih; Ulas, Fatih; Kaymaz, Abdulgani; Ozsoy, Ercan
    Aim: To evaluate retinal and choroidal thickness of healthy individuals in various age groups with optical coherence tomography (OCT) and enhanced depth imaging (EDI)-OCT technique . Material and methods: Totally 149 healthy patients aged between 0 and 69 years from seven different decades were included in this study. The retinal and choroidal thickness of the central area (fovea) and of the nasal and temporal points at a distance of 1500 μm from this central point were measured in the right eye with an OCT device (Heidelberg, Germany) in all subjects. The subjects with any ocular or systemic pathology and the subjects with a spherical refractive error more than 3 D or a cylindrical refractive error more than 1 D were excluded. The measurements of right eyes of the subjects were used in the statistical analysis and the P value less than 0.01 was considered to be significant. Results: The mean retinal thickness measurements were 326.61±16.89 µm at the temporally, 218.72±19.06 µm centrally and 351.32±17.74 µm nasally, with no statistically significant difference between the age groups (p˃0.01). The mean choroidal thickness measurements were 299.01±72.38 µm temporally, 332.34±78.08 µm centrally and 258.30±71.80 µm nasally. There were statistically significant differences in central and temporal choroidal thickness between age groups (p˂0.01). Conclusion: A statistically significant decrease was present in the choroidal thickness but not in the retinal thickness with age.