Fig. 17.1 Intracorneal ring segment Keraring (Mediphacos ) Fig. 17.2 Intracorneal ring segment Intacs (addition technologies ) Table 17.1 Main characteristics of the intracorneal ring segments most commonly used in…
Fig. 28.1 Different periods of vaulting of the implanted toric ICL Fig. 28.2 The ICL V4b IOL Fig. 28.3 The ICL V4c iol 28.2.5 Recommended Criteria for the Toric ICL…
Fig. 27.1 Scanning electron microscopy (SEM) of ARTIFLEX pIOL It has a flexible optic with a diameter of 6 mm. The total diameter of the lens is 8.5 mm and…
Fig. 9.1 Corneal topography Cornea is responsible for more than 2/3 of the total refractive power of the human eye, so its morphology is of vital importance to determine the…
Fig. 6.1 Process of formation of the first Purkinje image from a Placido disk The objective measurement of the radius of curvature of the anterior surface of the cornea, also…
Grade I Grade II – Eccentric corneal steepening – Absence of scarring – Myopia and/or astigmatism <5 D – Myopia and/or astigmatism 5–8 D – Mean central K readings ≤48.00 D – Mean central K readings…
Fig. 8.1 Pachymetric spatial profile analyses the averages of thickness values of the points within imaginary circles centered on the TP. The original analysis was performed considering 22 circles with…
[31]: (14.1)Here, λ is the optical wavelength, n is the refractive index of the medium, ρ is the mass density. From Eq. (14.1), we get: . Based on published data69,70,…
Fig. 18.1 Corneal edema 18.2.3 Filamentary Keratitis Filament formation around the incision site can be treated with debridement. 18.2.4 Stromal Thinning and Segment Extrusion The extrusion of the segment is…
Fig. 29.1 An example of a good candidate for cataract surgery with toric IOL implantation. Right eye refraction is +2.50 − 5 × 35° with a historical CDVA of 0.9…
