By Mazen M., M.D., Ph.D. Sinjab
Corneal topography is a non-invasive clinical imaging process for mapping the outside curvature of the cornea, the outer constitution of the attention. This technique could be conducted with a Pentacam, which makes use of a rotating digital camera to create a 3D photograph of the anterior of the attention. This moment version has been absolutely up-to-date to supply the most recent advancements in corneal topography and tomography utilizing the Pentacam desktop. starting with an advent, the subsequent sections describe the basics of corneal topography and use of the Pentacam with varied ophthalmic problems. With approximately 250 top of the range, color photographs and illustrations, this concise advisor is mainly worthwhile to graduate and postgraduate scholars in studying how you can learn and interpret corneal topography.
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Additional info for Corneal topography in clinical practice (Pentacam system) : basics and clinical interpretation
23 The patient is asked to cover one eye either by using a tissue or an occluding device. The patient should be wearing glasses or contact lenses because the examiner is most interested in the best corrected acuity. It is not uncommon for meaningless, subnormal acuities to be recorded while the patient’s glasses lie in a pocket or in a drawer. If the patient’s glasses are unavailable or subnormal acuity is obtained despite glasses, a pinhole test should be performed (Fig. 1–14). A pinhole device focuses a small point of light on the retina permitting a window of near optimal refraction.
From Liu GT: Disorders of the eyes and eyelids: Disorders of the pupil. In Samuels MA, Feske S (eds): The Office Practice of Neurology. ) third-order neuron Horner’s syndrome (oculosympathetic paresis) may not have anhidrosis. The signs of Horner’s syndrome, including mild ptosis, pupillary miosis, and, in some cases, anhidrosis, always occur ipsilateral to the side of the lesion, as there is no decussation or cross-over of the oculosympathetic pathway. 1 Neuro-Ophthalmologic Anatomy and Examination Techniques The Neuro-Ophthalmologic Examination In this section, we review the components of the neuro-ophthalmologic examination and the techniques necessary to assess the patient’s vision, pupillary function, ocular motility, and funduscopic findings.
10. Moore KL: Clinically Oriented Anatomy, 4th ed. Baltimore, Lippincott, Williams & Wilkins, 1999. 11. Galetta SL: Cavernous sinus syndromes. In Margo CE, Hamed LM, Mames RN (eds): Diagnostic Problems in Clinical Ophthalmology. Philadelphia, WB Saunders, 1994, p 610. 12. Balcer LJ, Galetta SL, Bagley LJ, et al: Localization of traumatic oculomotor nerve palsy to the midbrain exit site by magnetic resonance imaging. Am J Ophthalmol 1996;122:437–439. 13. Galetta SL, Liu GT, Volpe NJ: Diagnostic tests in neuro-ophthalmology.