In today’s world, everything can be done on the computer. It could be doing assignment, talking to a friend far away or playing games. People who spend a lot of time on a computer everyday will develop eye related problems. Our eyes focus well on images with a well defined edge like printed material on a white background. Computer characters or words are made up of many pixels or dots. The eyes find it hard to focus on this pixel and therefore for them to see the words well you have to strain. This constant flexion on the eye muscles creates burning eyes, fatigue, aching, dry and tired eyes.
Another advantage of using computer glasses is less accidents. When you work on a computer for more than 5 hours you will find yourself too tired to concentrate. While moving around work it will be easy to knock things down or make vital mistakes like forgetting to put off a heater or gas in the work pantry. This can cause fires or dangerous mishaps that will cost you a lot. Studies show that many accidents that happen in the work place are due to tiredness and lack of concentration. The best insurance you can have against these accidents is a pair of computer glasses.Computer glasses will give you more than just relief from headaches and tiredness. There is no better feeling like being alert and attentive even after 8 hours of working. After using these glasses you will realize that a simple thing as wearing glasses can do a lot for you. It is worth more than the price you have to pay for it. No one can put an amount on the ability to see clearly. Actually seeing better is definitely priceless.
Do you find that both work and leisure work entail spending most of your day using digital electronic devices to access email and internet? You are not alone; recent estimates indicate that there are 1 966 514 816 internet users worldwide, that’s 28.7% of the world’s population. The viewing of LCD screens was once restricted to desktop computers located in the Best guide but now laptop and tablet computers, electronic book readers, smart phones and other portable electronic devices have ensured that computer screens of one kind are another are everywhere. Even Children’s exposure is enormous: one recent investigation of over 2000 American children between 8 and 18 years of age reported that in an average day they spend approximately 7.5 h using entertainment media, 4.5 h watching TV, 1.5 h on a computer and over an hour playing video games. These screens have increased visual demands and given rise to a variety of symptoms that have been termed computer vision syndrome (CVS).CVS Symptoms:90% of computer users may experience one or more of the following visual symptoms: eyestrain; headaches; ocular discomfort; dry-eye; and blurred vision either at near or when looking into thedistance after prolonged computer use.Effects of uncorrected refraction:
Given the need to achieve and maintain clear and single vision of relatively small targets during computer work it is important that the retinal image be focused appropriately. While spherical hyperopia and high myopia should be corrected to reduce the ocular stimulus to accommodation and minimize blur there is documented evidence to suggest that uncorrected astigmatism produced a significant increase in symptoms. One test tested subjects with up to 1 D of residual astigmatism who were corrected with spherical soft contact lenses. This is a common clinical practice. The residual uncorrected astigmatism produced a significant increase in symptoms during computer work. The authors suggest that such symptoms could be reduced either by fitting these individuals with toric contact lenses, or alternatively by using a spectacle over correction to correct the residual astigmatism during computer operation.
Digital electronic media present a variety of visual demands that are significantly different from those of traditional printed materials in terms of working distances, gaze angles and text sizes. Therefore opticians cannot anymore assume that a patient will read text at a viewing distance of approximately 40 cm with their eyes depressed. Accordingly, research in the area of optometric testing methods and the design of ophthalmic glasses lenses to suit these specific visual applications (particularly for the correction of presbyopia) will probably be required. As to the question of provider, any registered optician can perform the eye exam and provide you with suitable corrective spectacles. Alternatively the patient can use their prescription and buy online: simply type “where can I buy eyeglasses” into Google’s search bar and let Google take you there.
Given that the prevalence of symptoms (including ocular discomfort, dry-eye, eyestrain, headaches, diplopia and blurred vision) may be as high as 90%, it is likely that an increasing number of sufferers will present for eye-examinations with symptoms associated with CVS. In the light of these findings, practitioners shall need to consider appropriate examination procedures and treatment regimens. Near testing at a single distance and gaze angle such as is commonly employed when a near point card is positioned in the primary position at a viewing distance of 40 cm is not adequate. The assessment of oculomotor functions at multiple viewing distances and gaze angles may be required.
Furthermore, prescribing routines may need to be reconsidered: ie. small refractive errors such as astigmatism between 0.50 and 1.00 D, that might have been left uncorrected in the past (particularly in contact lens wearers), should be corrected in a patient who is viewing an electronic screen for an extensive period of time. Cases of dry-eye and instances of low to moderate oculomotor anomalies or that might previously have been left uncorrected may be of sufficient magnitude to cause significant CVS symptoms when combined with prolonged hours of computer based tasks.
It is worth noting that the symptoms of CVS associated with accommodation and vergence disorders do seem, in most cases, to be a result of viewing a visually demanding near target for an extended period of time and not specific to the electronic monitor. In contrast, symptoms of dry-eye do appear to be directly related to computer use due to the position of the monitor (producing increased corneal exposure), reduced blink rate, increased partial blinking and other environmental factors. Further research is required to determine the efficacy of dry eye treatments in reducing symptoms of CVS.