Adaptive myopia Part 2. New ideas on physiological mechanisms of eye’s focusing
Journal Title: Офтальмологический журнал - Year 2017, Vol 0, Issue 1
Abstract
We reviewed morphology and physiology of macular zone of the eye and analyzed, adequately to the optics laws, an input optic signal from the white light coming into the foveola. The white light beam are dispersed at the outer corneal surface: these are not circles of scattered light but excitement bands of red and yellow cones in the foveola, and of blue cones on its circular periphery. We reviewed in detail the authors ' hypothesis on the presence of the fovea of the functional mechanism of “comparison of the location and intensity of the excitement fields of red, green and blue cones. This organization of the input optical signal allows the brain to create a response signal to control tone of ciliary muscles to install the required refractive power of the lens. Executive mechanism of the eye’s focusing is associated with operation in the fovea of the optical ring-sight consisting of dark blue cones with maximal possible concentration. Functional peculiarities of interaction of the rings-sights in binocular work of both eyes are identified. This hypothesis may have already helped detect the physiological mechanisms of the eye’s focusing and, apparently, in the future, would develop criteria for video security and visual work rules to fight against the pandemic of myopia. The work of found executive eye focusing mechanisms is considered by the authors in relation to their proposed hypothesis on metabolic theory of adaptation of myopia (2001). Until the rules of visual work are absent, the problems of video ecology and total prevention of acquired myopia are on the first place in the fight against the myopia pandemic.
Authors and Affiliations
I. Koshits, O. Svetlova
Study of etiologic factors for optic atrophy
Background: Optic atrophy (OA) is a disease of multiple etiologies and is a consequence of various pathological changes along the optic pathway. Central nervous system (CNS) disorders, vascular impairments and retinal an...
Targeted transscleral laser photocoagulation of the ciliary body in patients with neovascular glaucoma
Transscleral laser photocoagulation of the ciliary body is used to reduce intraocular pressure (IOP) in neovascular glaucoma, which is associated with a risk of complications. Purpose. To study the efficacy and safet...
Human body donation in foreign legislations
Background: Investigation of the features of foreign legislations governing the donation of human body is required to solve the issues pertaining to the legal regulation of body donation in Ukraine. Purpose: To examine...
A new set of tables for detecting thresholds of color sensitivity in children with acquired myopia
Background. Color vision, like visual acuity, is a function of cone cells in the retina of the eye. Development and improvement of this function goes in parallel with central vision development. The main cause of impaire...
Results of vitreous surgery with 20% C3F8/air mixture for macular holes larger than 800 μm
Background: Vitreous surgery for large macular holes is still a challenge to the ophthalmologist. Purpose: To assess the efficacy of the 20% C3F8/air mixture in the vitrectomy surgery for macular holes > 800 μm in diame...