Management of Ocular Tuberculosis
Name of the drug Mechanism of action Isoniazid It is a prodrug bioactivated by katG present in MTB which causes inhibition of mycolic acid synthesis. Most potent bactericidal drug in…
Glaucoma Tube Surgery
Year of introduction Tube diameter/material Plate size/material Resistance mechanism Molteno 1969 0.63 mm OD 0.30 mm ID Silicone 135 mm2 Polypropylene None Baerveldt 1990 0.63 mm OD 0.30 mm…
Nonpenetrating Glaucoma Surgery (Deep Sclerectomy, Viscocanaloplasty, and Canaloplasty)
Fig. 3.1 Anatomy of the limbus. Top: arrow with dashed line shows the anterior edge of the surgical limbus, the attachment of the conjunctiva to cornea. The solid arrow shows…
Minimally Invasive Glaucoma Surgery
Fig. 2.1 Two malpositioned iStent implants Superficial Implantation If the iStent is too superficial or incompletely inserted, there is a risk of detachment. In the case of superficial implantation, the…
Trabeculectomy
Fig. 4.1 (a) Traction sutures placed at 3 and 9 o’clock to avoid distortion of scleral flap. (b) Traction suture placed at 6 o’clock to avoid distortion of scleral flap…
Glaucoma Laser
Fig. 1.1 Corneal edema after SLT (Taken from a case report by Moubayed et al. (2009)) Given the lower energy used in SLT as compared to ALT, the majority of…
Masquerade Syndromes
Non-neoplastic Anterior Corneal epithelial defects Angle closure glaucoma Pigment dispersion syndrome Occult intraocular foreign body Drug- and vaccine-induced uveitis Juvenile xanthogranulomaa Intermediate Vitreous hemorrhage Asteroid hyalosis Retinitis pigmentosa Amyloidosis synchysis…
Approach to the Laboratory, Imaging, and Molecular Work-up for Uveitis
Classification Related conditions Anatomic • Anterior—iritis, iridocyclitis, anterior cyclitis • Intermediate—pars planitis, posterior cyclitis, vitritis/hyalitis • Posterior—focal, multifocal, or diffuse choroiditis, chorioretinitis, retinitis, neuroretinitis • Panuveitis—anterior, vitreous, retina, and choroid…
Surgical Therapy: Dexamethasone Biodegradable Intravitreal Implant (Ozurdex®)
Fig. 46.1 Microscopic appearance of complete Ozurdex implant *courtesy Allergan Fig. 46.2 Microscopic appearance of Ozurdex after dissolving for 3 weeks *courtesy Allergan Fig. 46.3 Dissolving Ozurdex 72 days after implantation in human eye Fig. 46.4…
Tuberculosis
Anterior uveitis Granulomatous Non-granulomatous Intermediate uveitis Posterior and panuveitis Retinal vasculitis Multifocal serpiginoid choroiditis Choroidal tubercles/tuberculoma Subretinal abscess Tubercular optic neuropathy Papillitis Neuroretinitis Optic nerve granuloma Endophthalmitis and panophthalmitis Anterior…
