1. Pondered increase of optic cylinder’s diameter through biometric assessment of the optical power 2. Total removal of the iris 3. Cryoextraction of the lens whether opaque or transparent 4….
Fig. 11.1 (a) New design of the Boston keratoprosthesis. Screw threads have been eliminated and dimensions have been changed. (b) Diagram of the assembled device. The KPro has been incorporated…
Incision size (mm) Number of sutures Donor cornea needed Single- or two-stage surgery KeraKleara 3.5 mm diameter 0–4 No Single Boston KPro 8.0 mm diameter 16–24 Yes Single AlphaCor…
Fig. 8.1 Ultrasound biomicroscopy image of an eye implanted with Boston keratoprosthesis. Note the poor details of the contact lens (CL), assembled keratoprosthesis (KPro), and corneal graft as well as…
Fig. 14.1 (a) Posterior segment photograph of peripheral retinal vessels (b) Ocular coherence tomography (OCT) of retinal layers 14.3 Posterior Segment Surgery Posterior segment surgery is relatively more difficult and…
Fig. 24.1 Photomicrographs of well-biointegrated AlphaCor explanted due to penetrating injury. Top left: overview. Top right and bottom: left side of the section, showing the cellular elements within the peripheral…
Fig. 7.1 Boston Keratoprosthesis prognostic categories as described by Yaghouti et al. [10]. A Kaplan-Meier analysis for survival of ambulatory vision (visual acuity between 20/20 and 20/200) was performed for…
Fig. 13.1 Kontur© methafilcon A hydrogel bandage lens over KPro Type I Base curve 6.8–9.8 mm Diameter 12.0–24.0 mm Sphere power +10.00 to −20.00 D Toric power −0.75 to −5.00…
Fig. 12.1 Anterior-segment optical coherence tomography image of the anterior chamber angle in a patient before (a) and after (b) Boston Type I Keratoprosthesis surgery. Progressive synechial angle closure was…
Fig. 1.1 Erasmus Darwin (1731–1802) (Image courtesy of Mannis and Mannis [1]) Fig. 1.2 Guillaume Pellier de Quengsy (left) (1751–1835) and his instrumentation (right) for prosthokeratoplasty (Image courtesy of Mannis…
