Медицинский центр «Барзилай», Ашкелон, Израиль Wet and dry corneal topography? <...> A new contraindication for the LASIK procedure in refractive surgery Топография роговицы: «сухая» или «мокрая»? <...> In corneal refractive surgery, corneal topography is used preoperatively to detect irregular astigmatism, ectatic corneal disorders, or other abnormalities, and to monitor topographic stability following discontinuation of contact lens wear. <...> Postoperatively, it is used to monitor and assess the surgical outcomes, detect the causes of visual symptoms, and refi ne and develop surgical techniques for retreatment. <...> Examining the corneal topography carefully is a necessity for a successful corneal ablation procedure like in PRK, LASEK, EpiLASIK and LASIK. <...> However it must be understood that when performing a corneal topography, the anterior surface of the cornea is NOT measured but the anterior surface of the tear fi lm. <...> In this study the topography of the tear fi lm was studied in detail and the topography of this fi lm is called the TOPOFILM. <...> Тщательное исследование топографии роговицы является совершенно необходимым для успешного проведения любого вида лазерной коррекции (поверхностные вмешательства: PRK, LASEK, EpiLASIK) и LASIK. <...> Однако нужно совершенно четко понимать, что когда мы проводим исследование, мы НЕ фиксируем форму передней поверхности роговицы, но мы фиксируем форму поверхности слезной пленки. <...> В данном исследовании проведено изучение формы и детальный анализ формы поверхностной слезной пленки, введен новый термин TOPOFILM – «поверхностная пленка». <...> Eastern Europe" 2017, volume 7, № 2 Оригинальные исследования INTRODUCTION The shape of a cornea can be measured and represented by color-coded maps in several ways. <...> It is critical to fi rst check the scale and step interval when viewing a colorcoded topographic map [1]. <...> Some defi nitions: The photokeratoscope view displays the image of placido rings projected on the cornea. <...> It provides important information when assessing the quality of tear fi lm, the centration of measurement relative to the cornea, or the causes of local irregularity. <...> The axial map displays axial radius of curvature or axial power, which is calculated by referring the optical (or sagittal) axis <...>