Viral Anterior Uveitis
12. Piebanga LW, Laibson PR. Dendritic lesions in herpes zoster ophthalmicus. Arch Ophthalmol. 1973;90:268.CrossRef 13. Miserocchi E, Waheed NK, Dios E, et al. Visual outcome in herpes simplex virus and…
Infectious Keratitis
Exogenous factors Endogenous local conditions Systemic factors Contact lens wear Lid disorders Alcoholism Topical corticosteroids 1. Lagophthalmos Allergies Topical antibiotics 2. Entropion Blood dyscrasias Trauma 3. Ectropion Collagen-vascular disease Glaucoma…
Infectious Conjunctivitis
Chemical Usually self-limiting; possibly irrigation with warm saline Gonococcal Hospitalization; isolation (at least 24 h after therapy is initiated) IV aqueous penicillin G 100,000 units/kg/day in four doses daily for…
The Visual Field
(1) University of Sydney, Sydney, Australia Overview The visual field is the portion of space visible to a single stationary eye. The normal visual field extends 90° temporally, 70°…
Contrast Sensitivity
(1) University of Sydney, Sydney, Australia Overview: Relevance of Contrast Sensitivity to Daily Function 1. Contrast sensitivity and visual function Contrast is a measure of the lightness or darkness…
The Retina
(1) University of Sydney, Sydney, Australia Structure and Development Overview The retina is a highly specialized neural tissue that converts light into neural signal. It lines the inner surface…
Temporal Properties of Vision
(1) University of Sydney, Sydney, Australia Overview 1. The visual system in a changing environment The visual system responds to variation in light over time, allowing instantaneous interpretation of…
The Ciliary Body and Aqueous Fluid Formation and Drainage
(1) University of Sydney, Sydney, Australia Ciliary Body Overview The ciliary body is continuous with the iris anteriorly and the choroid posteriorly. Together these three tissues make up the…
The Lens and Accommodation
(1) University of Sydney, Sydney, Australia The Lens Overview 1. Structure The lens is a biconvex, transparent structure located behind the iris (Fig. 4.1). Fig. 4.1 The lens and…
The Primary Visual Cortex
(1) University of Sydney, Sydney, Australia Overview The primary visual cortex (V1) receives visual information from segregated magnocellular, parvocellular, and koniocellular channels of the lateral geniculate nucleus (LGN) [1,…
