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Life style & ocular health
Transcript of Life style & ocular health
( mucosal surfaces response)in conjanctiva when chronically exposed to air pollution
Tear film abnormalities ,instability and subclinical changes of the ocular surface
The most commonly described ocular findings in
are the following:
Upward slanting of the palpebral fissure, epiblepharon, refractive error, squent,
nystagmus, nasolacrimal duct bstruction, blepharoconjunctivitis, retinal abnormalities, cataract, glaucoma, iris Brushfield spots (aggregation of connective tissue), and keratoconus
Enhance free- oxygen radicals (the chemical products in the body that can damage cells) and lead to
Squamous cells metaplasia
in the conjunctiva surface epithelial layer by inflammation associated with
irritative and toxic agents and the absence of circulating factors required
for epithelial differentiatiotion
Chronic instability in the tear film layer increases ocular irritation , and this may be responsible for the
of the conjunctival epithelium
Life style & ocular health
An-najah National University
Environmental and occupational optometry course
Prepared by: Ghayda'a Shaqour
Supervisor: Ms. Dianeh Rabi
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Priscila Novaes, Paulo Hilário Saldiva, Newton Kara-José, Mariângela Macchione, Monique Matsuda, Lourdes Racca, et al. (2007). Ambient Levels of Air Pollution Induce Goblet-Cell Hyperplasia in Human Conjunctival Epithelium. Environmental Health Perspectives Jornal, 1753-1756.
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Sze-Yee Lee, Andrea Petznick, & Louis Tong. (2012). Associations of systemic diseases, smoking and contact lens wear with severity of dry eye. Ophthalmic & Physiological Optics Journal, 518–526.
Affects the corneal nerves which causes a hyposecretory response from the lachrymal gland and couse dryness
Autoimmune disease, in which the lachrymal gland is attacked by lymphocytes and gradually loses its function and then couse dryness
Cold weather lead to meibomian gland dysfuncfion may well cause dry eye disease
Meibomian lipid films solidified & shrank
Left a large portion of the air-water interface uncovered with lipid molecules
Dynamic exercise are associated with reductions in IOP
The magnitude of reduction in IOP has been found to be related to the intensity of exercise.
Reduction in AXL accompanying the reduced IOP following a short period of dynamic exercise
Males between 25 and 34 years of age are under higher risk of exposure to work-related eye injary
Working hours per day and age were significant risk factors for reporting an increase in ocular symptoms
Many hours in front of the computer and oculomotor anomalies are often mentioned as factors influencing
Discrepancies between accommodative and vergence
stimuli from the retinal image have e.g. been attributed
work-related visual fatigue
(latent squint) is also associated with musculoskeletal pain and discomfort
A deficiency in visual function may result in
headaches and ocular symptoms