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    Effect of Nd: YAG Laser Capsulotomy Size on Intraocular Lens Tilt and Decentration after Femtosecond Laser-Assisted Capsulotomy
    (2021) Cinar, Esat; Yuce, Berna; Aslan, Fatih; Erbakan, Gökhan
    Purpose: To determine the effect of capsulotomy size on intraocular lens (IOL) tilt and decentration in eyes undergoing Nd:YAG laser capsulotomy due to posterior capsular opacification (PCO) following femtosecond laser-assisted (FSL) cataract surgery. Materials and Methods: The study included 42 patients who underwent FSL-assisted standard 5.0-mm anterior capsulotomy followed by Nd:YAG laser capsulotomy at a mean of 16.2 (6–34) months after cataract surgery. The patients were divided based on Nd:YAG posterior capsulotomy size into the 3.5 mm group (22 eyes) and the 4.0 mm group (20 eyes). IOL tilt and decentration were measured with Scheimpflug camera before and at one month after Nd:YAG laser capsulotomy. Results: Before capsulotomy, there were no differences between the 3.5 mm and 4.0 mm groups in terms of angle of tilt or decentration at either meridian (p>0.05). After capsulotomy, both groups showed significant decreases in angle of tilt (mean vertical/horizontal values: 1.4/1.2 degrees in the 3.5 mm group; 0.9/0.8 degrees in the 4.0 mm group) and significant increases in decentration (mean vertical/horizontal values: 0.10/0.11 mm in the 3.5 mm group; 0.27/0.24 mm in the 4.0 mm group) at both meridians compared to precapsulotomy measurements (p<0.05). After capsulotomy, all tilt and decentration parameters differed significantly between the two groups at both meridians (p<0.05 for all). Conclusions: The diameter of Nd:YAG posterior capsulotomy performed after FSL-assisted cataract surgery affected the mechanical stability of the IOL, but the tilt and decentration values were very small and may not be clinically significant.
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    Femtosecond Laser-Assisted Astigmatic Keratotomyfor Correction of Corneal Astigmatism DuringPhacoemulsifi cation
    (2020) Cınar, Esat; Bolu, Hulya; Yuce, Berna; Aslan, M. Fatih
    Purpose: To evaluate the outcomes of femtosecond laser-assisted arcuate keratotomy (FSAK) combined with cataract surgery in eyes with low-to-moderate corneal astigmatism.Materials and Methods: This study included patients who underwent combined femtosecond laser-assisted phacoemulsifi cation and arcuate keratotomy between October 2016 and October 2018. Keratometric astigmatism and astigmatic changes were evaluated before and six months after the surgery by vector analysis based on Alpin’s method.Results: In total, 69 eyes of 69 patients (35 female and 34 male; mean age, 60.3 ±10.5 years) were included. The mean preoperative target induced astigmatism (TIA) was 1.55±0.46 diopters (D) and postoperative astigmatism (difference vector [DV]) was 0.83±0.41 D (P<.001). The mean surgically induced astigmatism (SIA) was 1.09±0.56 D. The magnitude of error (difference between SIA and TIA) was -0.28±0.65 D and correction index (SIA/TIA ratio) was 0.71±0.34, indicating a slight undercorrection. The angle of error was near 0 (22±16 degrees), indicating no signifi cant systematic error of misaligned treatment. The index of success (IOS), which is the ratio of DV to TIA, was 0.54±0.27, indicating a success rate of 46% in the correction of astigmatism.Conclusion: Combined phacoemulsifi cation with FSAK appears to be a relatively easy and safe means for management of low-to-moderate corneal astigmatism in cataract surgery candidates.
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    Öğe
    Reply: Influence of Nd:YAG laser capsulotomy on toric intraocular lens rotation and change in cylinder power
    (Lippincott Williams & Wilkins, 2024) Cinar, Esat; Yuce, Berna; Aslan, Fatih; Erbakan, Gokhan
    [Abstract Not Available]