By Erna E. Kritzinger
Read or Download A Colour Atlas of Optic Disc Abnormalities PDF
Best ophthalmology books
''This booklet outlines the pathological stipulations of the valuable retina the place the macular pigment is understood to have its maximum involvement in security opposed to photooxidative harm. The ebook specializes in the character of the macular carotenoids, their delivery and accumulation in the retina, and their effect at the etiology of retinal ailments.
This booklet has been written for radiologists, ophthalmologists, neurologists, neurosur geons, plastic surgeons, and others drawn to the evaluate of issues with ophthalmologic signs. it really is designed to supply fresh wisdom during this sector derived from ultrasonography, computed tomography (CT), and magnetic resonance imaging (MRI).
Relocating from a typical medical reference Garner and Klintworth's 3rd version of Pathobiology of Ocular disorder is now modeled to be either a systematic learn device and a brief reference alternative for the working towards ophthalmologist, ophthalmic pathologist, optometrist and imaginative and prescient scientist. With the addition of ten new chapters, this version focuses its realization at the factors and mechanisms of ocular sickness, and is at the vanguard of the newest discoveries, learn equipment, and the present on-going study in ocular affliction.
Extra resources for A Colour Atlas of Optic Disc Abnormalities
May use iris hooks. i. Create 4 paracentesis sites at 2, 4, 8, and 10 o’clock positions. ii. Place paracentesis incisions posteriorly in the limbus and parallel to iris to avoid tenting of the iris when hooks in place. iii. Grasp iris hook with ﬁne forceps or needle holder and insert into anterior chamber with hook parallel to the iris plane (Fig. 6). Drive the point of the blade through the stroma until it is 2 mm central to the external incision. Some blades have line marks on the surface to indicate the 2 mm landmark.
Cauterize as necessary to stop bleeding. Use 15 mm, 25G blunt tipped cannula; make sure it is through all layers of Tenon capsule. Position cannula straight so that it is essentially parallel to the optic nerve (ensures that the anesthetic will encircle the globe). Slowly inject 2–3 ml of anesthetic subtenons in the periequatorial region. Note: If chemosis is noted, reposition the cannula under all layers of Tenon capsule. 7 ■ Remove cannula. May close conjunctival opening with cautery if needed.
Advance needle, piercing intermuscular septum and enter muscle cone. Gently move needle from side to side, looking for any movement of eye as a clue that the globe has been penetrated. Aspirate syringe to ensure a blood vessel has not been entered. 8 ■ ■ Slowly inject 3–4 ml of anesthetic solution. Remove needle. ■ Apply pressure to prevent hemorrhage and facilitate diffusion of anesthetic. ) ■ Complications. ❏ Retrobulbar hemorrhage. ❏ Central retinal artery occlusion. ❏ Intravascular anesthetic injection.
A Colour Atlas of Optic Disc Abnormalities by Erna E. Kritzinger