کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
2700628 1565135 2016 4 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
The applicability of correction factor for corneal thickness on non-contact tonometer measured intraocular pressure in LASIK treated eyes
ترجمه فارسی عنوان
کاربرد ضریب تصحیح برای ضخامت قرنیه بر فشار داخل چشم اندازه گیری شده با تونومتر غیرتماسی در چشم های تحت درمان با لیزیک
کلمات کلیدی
NCT؛ CCT. لیزیک؛ فشار داخل چشم؛ اصلاح
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی چشم پزشکی
چکیده انگلیسی

PurposeTo determine the applicability of central corneal thickness (CCT) based correction factor for non-contact tonometer (NCT) measured intraocular pressure (IOP) readings.MethodA prospective, non-randomized study involved 346 eyes of 173 consecutive patients with age ⩾21 years undergoing laser-assisted in situ keratomileusis (LASIK) for myopia and/or myopic astigmatism. The CCT and IOP were measured before and after the LASIK procedure. The IOP pre and post-LASIK was compared after applying the correction factor for CCT. Patients not completing the 3 month postoperative follow-up were excluded.ResultsThe median spherical equivalent before undergoing LASIK was −4.25D (inter-quartile range, −3.25D). The mean preoperative CCT was 536.82 ± 33.71 μm which reduced to 477.55 ± 39.3 μm (p < 0.01) post-LASIK. The mean IOP reduced from a preoperative value of 14.6 ± 2.32 mmHg to 10.64 ± 2.45 mmHg postoperatively (p < 0.01). On applying correction for the corneal thickness, the pre and postoperative IOP was 15.14 ± 2.8 mmHg and 15.37 ± 2.65 mmHg (p = 0.06) respectively with a strong positive correlation (r = 0.7, p < 0.01). Three hundred eyes (86.7%) had an absolute difference in IOP of less than 3.0 mmHg post-CCT correction which is within the retest variability of NCT. Only 46 eyes (13.3%) had an absolute difference of more than 3.0 mmHg.ConclusionThe modified Ehler’s correction algorithm used in this study can be effectively applied in the normal IOP range in a majority of patients.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Saudi Journal of Ophthalmology - Volume 30, Issue 1, January–March 2016, Pages 25–28
نویسندگان
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