UV rays and associated ocular disorders
UV rays contained in sunlight are harmful to human beings’ eyes. Potential eye problems associated with UV radiation include photokeratitis, reversible sunburn of the cornea and so on. Cornea sunburn may lead to temporary vision loss in some people. Some studies also show that cataract is closely related to long-term exposure to UV rays as well. As a clouding on the eye’s natural lens, cataract usually causes blurry vision. It is quite necessary to take proper ways to protect the eyes from these harmful rays.
Some professions especially require protection from sunlight
Sunlight is fiercest between 10 AM and 4 PM. Harmful UV light during these hours can considerably damage the eyes of people who spend much time outdoors. In particular, some groups of people are more susceptible to vision defects caused by UV rays, e.g. truck drivers, fishermen, farmers, beach-goers, skiers and the like. These professions do require more protection against hazardous rays during daytime. The reason is very obvious that they spend most of the daytime under direct sunshine. Professional sunglasses are the standard solution.
Sunglasses are the commonest device for UV protection
UV rays in sunlight have mainly three types: UVA, UVB and UVC. The most common way to fight against these rays is to wear sunglasses during outdoor activities. Customers should always choose sunglasses with a label that states 99% to 100% UV protection. These dark sunglasses will never cause color distortion nor bring difficulty in recognizing traffic signals. In addition, most of those people listed above demand for extra visual benefits from their sunwear, e.g. polarization capability. It is also necessary for children to wear real sunglasses, rather than toy ones.
OTC medications can help
Caused by excessive UV ray exposure, eye disorders including photokeratitis and corneal sunburn can be treated by various over-the-counter (OTC) medications. These medications can typically deal with eye itchiness, redness or excessive watering. Universal products contain artificial tears, ointments and decongestants. Once there is a lasting complication after using an OTC medication, it is a necessity to see a doctor.
Dry eye is a common ocular disorder
In addition to those eye problems described above, dry eye is also a common problem that is usually under the control of OTC medications. People with dry eye often have a white or red part in the eye and even feel sandy and gritty. Also known as keratoconjunctivitis sicca, dry eye always deteriorates as people age. Moreover, dry eye occurs more frequently in people using antihistamines, antidepressants or diuretics.
Hordeolum as a nodule on the eyelid
Hordeolum is another eye disorder. It appears as a tender and raised nodule on the eyelid. Associated with the rosacea, hordeolum is actually an irritation of the glands. Hordeolum and Blepharitis are caused by the same bacteria. This condition can be treated only by applying a warm compress to the eyelid area.