digital eyestrain

1
Jun

Digital Eyestrain

 

A 2016 report by the Vision Council found that 60% of Americans use digital devices for 5 or more hours each day. 70% of Americans use 2 or more devices at a time.
The term Digital Eyestrain has replaced the term Computer Vision Syndrome due to the increase in types of digital devices. Digital Eyestrain is defined as “physical discomfort of one’s eyes after spending periods of time throughout the day in front of a digital device, such as a computer or smartphone.”

The list of Digital Eyestrain symptoms is long:

Eyestrain, Burning Eyes, Difficulty Refocusing, Grittiness, Dry Eyes, Blurred Vision, Headaches, Irritation, Tired Eyes, Neck/Shoulder/Back Pain, Double Vision, and Redness.

It is reported that we blink an average of 10 times a minute normally, when reading, using a smartphone or other device the blink rate drops to 4 times a minute. Blinking is a vital component to ocular surface health and tear stability. More important than how often we blink is how well we blink. An incomplete blink can cause more tear instability than not enough blinks. A complete blink is necessary to stimulate a muscle on the eyelid margin that releases an important component of the tear film.

Treatment for Digital Eyestrain includes wearing the best visual correction for the task. Reducing glare and fatiguing light with coatings is beneficial also. For contact lens wearers the proper correction for the working distance is important. A clean contact lens surface and proper blinking can minimize dry eye symptoms.

31
Jul

Vision at Work

According to a 2015 survey of employed US adults who had vision benefits, 92% of the respondents felt that the quality of their work was impacted by visual disturbances at the workplace. Only 13% reported this fact to their employer, even though 99% of them felt that seeing well was important. More than half of those surveyed said they were bothered by light issues at work. The top light issues or visual disturbances were tired eyes, light reflecting off a computer screen, bright glaring light, dry eyes and headaches.

When I first started my optometry career I had a huge book dedicated to occupational eye care. The book was published before the ubiquitous use of computers so the content of the book included various types of bifocals and lens designs to meet the demands of secretaries, carpenters and other occupations. There was a chapter dedicated to the wielding profession and the proper selection of tints and protective eyewear. The proper design of eyewear and safety are still very important, but more complaints involve computers and electronic devices than 25 years ago.

65% of Americans report suffering from digital eyestrain. Symptoms of digital eyestrain include neck pain, eye strain, blurred vision, headache and dry eyes. A combination of factors foster the onset of digital eye strain, including the proximity of the screen, the frequency and duration of use and the degree of exposure to high-energy visible (HEV) or blue light emitted by video screens. You don’t need to suffer. Poor vision and compromised visual working conditions reduce our productivity. Solutions are available to relieve and minimize digital eyestrain.

20
Aug

Back to School with Technology

Today’s gadgets and devices are placing demands on young eyes. The benefits of technology have a downside, especially when it comes to the eyes. Stress on the accommodative system (focusing) causes eye fatigue.

This can cause headaches, blurred vision and other related chronic discomforts.
Nearly 1 in 4 children are on digital devices 3 or more hours per day.
School text books are rapidly moving to tablets
40% of young adults spend at least 9 hours per day on digital devices.

Computer lab

10 things you should know about digital eyestrain:

  • BLURRED VISION Think about how you look at your phone, then your computer screen, back to your phone then at the TV. Like any muscle that is holding in one position for a length of time it contracts and then has a hard time relaxing. Same goes for your eye muscles. You have been looking at near objects, the muscles have contracted, then you quickly look up and the muscles have locked up and can’t relax and your vision becomes blurred.
  • TIRED EYES. Any muscle that is fatigued is going to be sore and tired.
  • HEADACHES. When your eyes are tired you will get headaches. This type of headache tends to occur around the eyes.
  • BODY FATIGUE. At the end of the day patients are finding they are just too tired and need to close their eyes. When the eyes are closed there is nothing for them to foccus on and the muscles can relax.
  • DRY EYES. Your blink rate goes down when the eye is focusing. Every time you blink the eye needs to readjust and that is work for your eye so the blink rate drops when you focus at near work. It can drop to 10 times a minute for computer work and 4 to 6 times a minute when looking at a smart phone or tablet. Not blinking allows the eyes to dry.
  • LIGHT SENSITIVITY. Eye muscles are extremely tired when working all day. When light comes into your eye it constricts the pupil which is right next to the ciliary body. the muscles that focus the eye. So when light comes into the eye it is a similar feeling to focusing. It is similar to lifting weights all day then someone comes along and punches you in the arm. That muscle is sore and tender.
  • EYE RUBBING. What tired muscle doesn’t feel good when you rub it?
  • POOR NIGHT VISION. Our eyes do not know how to focus on light. If you are staring at a light in the distance you wouldn’t be able to tell how far away it really is.
  • REDUCED CONCENTRATION. Any time a muscle is over used, such as the eye focusing on light all day, it becomes more difficult for the eye muscles to continue to hold that position.
  • DOUBLE VISION. Diplopia or double vision is caused when the eyes do not work together. Staring at near objects such as a computer, phone or tablet require persistant converging and diverging all day. The muscles become so tired they lose the ability to hold a position and we see double.

It is difficult to avoid the use of computers and tablets, but you can take steps to reduce digital eyestrain. Wearing the correct prescription and taking advantage of blue light blocking coatings are 2 ways to make your eyes more comfortable. Make an appointment.