What Your Eyes Have Been Trying to Tell You | Nidhi Patwardhan | TEDxWCE Sangli

Introduction to Digital Eye Strain and Its Prevalence

• Many people ignore the messages their eyes send them, and as an eye surgeon with 15 years of experience, at least two out of every five patients have eyes that are literally asking for help 10s.
• A 36-year-old software engineer, who worked on his PC until 12:00 or 1:00 am every night, visited the clinic with symptoms such as redness, dryness, and the need to use eye drops every 20 minutes, and further tests revealed structural damage to his eyes, including 30 to 40% damage to the oil glands 42s.
• The engineer's condition is an example of Digital Eye Strain, a modern epidemic that affects almost every other person, with symptoms including dryness, redness, watering, light sensitivity, and air sensitivity, as well as body symptoms like back pain and neck pain 2m6s.
• The main cause of Digital Eye Strain is the reduced blink rate that occurs when people stare at screens, decreasing from the normal 15-20 blinks per minute to 5-7 blinks per minute, which disrupts the spreading of the tear layer on the eyes and leads to reduced nutrition and lubrication 2m6s.

Mechanisms and Causes of Digital Eye Strain

• The blink process is an active process that plays a crucial role in spreading the tear layer on the eyes, and when the blink rate decreases, the quality of tears also degrades, leading to inflammation and swelling in the eyes 2m6s.
• A scary fact is that as screen usage increases, the oil glands in the eyes shrink, leading to further damage and problems 2m6s.
• The eyes can become damaged due to prolonged screen time, leading to irreversible damage, and this is often caused by expecting the small focusing muscle in the eyes to work for extended periods, such as 6-10 hours, without rest 10s.

Impact of Screen Time on Children and Adolescents

• When people, especially children, spend excessive time on screens, their eyes can become fatigued and strained, leading to symptoms like watering, rubbing, irritability, and a decreased attention span, with teenagers often experiencing more severe effects 42s.
• A 15-year-old girl was found to have a significant increase in her minus number, from -1 to -5, over the past 5 years, which was attributed to her lifestyle of spending 8 hours in school, followed by study time, limited sleep, and excessive screen time, with no outdoor activities 2m6s.
• The lack of outdoor activities in children's lives is causing their eyes to adapt to a life of near activities only, leading to a new epidemic of myopia, a condition where distant vision is impaired, and the number of people with myopia is expected to increase, with predictions suggesting that every second person will be myopic by 2050 2m6s.

Risk Factors and Consequences of Prolonged Screen Use

• The risk factors for digital eye strain include the number of hours spent on screen time, with increased hours leading to a higher risk, and disrupted nighttime routines, which can cause more harm than just the amount of screen time 2m6s.
• The excessive use of screens can cause damage to the eyes, and this damage is more likely to occur when screens are used without breaks and are held close to the eyes, such as with smartphones, compared to PCs or laptops 10s.
• Despite the potential harm caused by screens, there is a lack of discussion about this issue, possibly because it is seen as a normal part of modern life, and the effects of screen use on the eyes are not immediately apparent 42s.
• However, ophthalmologists are seeing a significant number of patients affected by screen use, and if precautions are not taken, this problem will become more widespread and visible to the general public 1m26s.

Challenges in Addressing Screen Time and Digital Eye Strain

• The most logical and effective solution to this problem is to reduce screen time as much as possible, but this can be difficult to achieve 2m6s.
• Self-awareness is the best type of self-control, and it involves being able to observe oneself without judgment, such as taking a pause when reaching for a screen and asking oneself if it is necessary or just a habit 2m50s.

Strategies for Reducing Screen Time and Temptations

• By creating a space between the temptation to use a screen and the actual use, individuals can make more conscious choices and reduce their screen time 3m20s.
• To limit screen time, it is essential to reduce temptations, such as turning off all notifications on the phone, not keeping the phone in the bedroom, and not checking it immediately after waking up, which helps to decrease distractions 10s.
• Another factor is to avoid carrying the phone everywhere and to limit social media usage by not having personal accounts on platforms like Instagram and Facebook, as these apps can take more joy out of life rather than giving it 42s.
• Being a spectator in other people's lives through social media is not satisfying, and instead, one should focus on being the actor in their own life, which can be achieved by replacing temptations with positive activities 1m6s.
• Positive activities can include hobbies like reading, exercising, spending time with friends and family, teaching juniors, and learning new things, which can help to utilize time more efficiently 1m30s.
• Becoming a part of various organizations and societies, such as professional societies, can also be beneficial as it requires contribution, values input, and makes time more utilized, ultimately decreasing the hold of temptations 2m6s.

Managing Screen Use in Children and the Role of Parents

• For children, it is essential to set time limits on screen usage, and as parents and caregivers, it is crucial to be good role models, as 2 hours of outdoor activity is recommended to reduce the progression of myopia 10s.
• Screen use has become inevitable in every profession, and it is not possible to completely avoid screens, so it is necessary to manage screen time in a better way, starting with proper ergonomics, which involves maintaining a good posture while using screens 42s.

Ergonomic Practices for Reducing Eye and Body Strain

• To maintain proper ergonomics, it is recommended to use a PC or laptop instead of a smartphone, especially if using the screen for more than 30 minutes, and to keep the screen at a level that is slightly below eye level, with the back properly rested and the neck straight 2m6s.
• The illumination of the room should be adjusted to match the screen's illumination, neither too dull nor too bright, and the screen's illumination and font size should also be properly adjusted to reduce eye strain 2m6s.
• Proper ergonomics is equally important, and a surprising fact is that a patient who complained of eye pain was actually suffering from neck problems due to bad posture while using screens, which had to be treated 2m6s.

Breaks, Blinking, and Eye Care During Screen Use

• To reduce eye strain, it is essential to take regular breaks, following a modified version of the 2020 rule, which involves looking at something 20 feet away for at least 5 minutes every 20 minutes, and this break can be utilized for walking, physical activity, talking to friends and family, or blinking 10s.
• Blinking is crucial when using screens, and getting a proper ophthalmic checkup is also necessary, especially if an individual has a prescription for glasses, whether for nearsightedness or farsightedness, and using artificial tear drops can help with dryness, but if the dryness is severe, dry eye therapies are available 42s.
• Vitamin D and omega-3 deficiencies can contribute to dryness, and some patients may experience inherent weakness in their focusing muscles, leading to blurring, headaches, and double vision after screen use, for which special testing, vision therapy, and orthoptic treatment are available 1m30s.

Importance of Sleep and Lifestyle in Eye Health

• A category of patients with weak focusing muscles may require immediate treatment after experiencing symptoms, and deep sleep is a crucial factor in recovery, with 8 hours of proper nighttime sleep being a necessity, not a luxury, in today's digital age 2m6s.
• Ultimately, it is necessary to accept that the human eye has not evolved for constant screen use, and when the eyes send a message that they need a break, it is essential to listen and take action to prevent long-term damage 3m0s.

Conclusion and Call to Action for Eye Health

• It is essential to go outside and be exposed to natural light, and this message needs to be taken seriously 10s.
• Constant screen use without breaks, especially at night, should be avoided, and making a change to nighttime screen use is a suggested first step 42s.
• Having information is the first step, but taking action is also crucial, and being aware of the side effects and disadvantages of screen use is important, as seen in the example of an ophthalmologist who is knowledgeable about the effects but must also take action to protect their own eyes 1m30s.
• When experiencing eye strain or dryness after screen use, it is important not to ignore the message, but to accept it, take action, and spread the message to others 2m6s.