Change the screen brightness. Do I need to turn on the eye protection mode when looking at my phone?

Tao Hai

Do I need to wear glasses when using my phone?

This requires specific analysis of specific issues. The general principle is that if you can see the mobile phone screen clearly without wearing glasses, and the duration lasts for more than half an hour or even longer, and you don’t feel eye fatigue, you can take off your glasses. Especially for myopic patients over the age of 45, because their eyes have entered the presbyopia stage, they may not be able to see clearly when looking at the mobile phone screen with myopic glasses. As you get older, this situation will become more obvious. If you can only see clearly without taking off your myopic glasses, it is equivalent to what ordinary people of the same age can see with reading glasses. In this case, it is also correct to take off myopic glasses to look at the mobile phone.

It should be noted that some children suffer from myopia, astigmatism and amblyopia at the same time. Doctors will require these children to wear glasses regularly to correct their myopia and astigmatism, and to stimulate their amblyopia. At this time, it is incorrect for children to take off their glasses to look at their mobile phones.

Do I need to turn on the eye protection mode on my phone?

The eye protection mode of mobile phones mainly changes the brightness and color temperature of the mobile phone screen to make the light of the mobile phone screen softer, which has a certain effect on reducing eye visual fatigue. If the mobile phone user feels that turning on the eye protection mode of the mobile phone makes the eyes look more comfortable, he can turn it on. It should be emphasized that the eye protection mode cannot prevent myopia. No matter how good the eye protection mode is, it is not as good as saving eyesight. Avoiding long-term and uncontrolled viewing of the mobile phone screen is the most important thing.

Can eye protection lamps really protect your eyes?

On January 1, 2024, the "Performance Requirements for Reading and Writing Desk Lamps" was officially implemented. As the latest national standard, it puts forward comprehensive requirements for the illumination, uniformity, shading, blue light, strobe, color rendering, power and other parameters of reading and writing desk lamps, which are sufficient to serve as a key reference factor when purchasing desk lamps. Compared with desk lamps that do not meet the standards, desk lamps that meet national standards have a certain protective effect on the eyes.

When children use desk lamps, they should not place them directly in front of them or on the same side as their writing hand. If they write with their right hand, the desk lamp should be placed on the left. In addition, parents should pay attention to the ambient light source. When the light is dim, they must turn on the ceiling light in the room to make up for the lack of light. The higher the light brightness, the better. The higher the brightness, the more obvious the glare, and the eyes are more likely to feel uncomfortable. In order to take into account both daytime and nighttime use, it is recommended to choose a desk lamp with adjustable color temperature. When children and adolescents use desk lamps for reading and writing at night, they should adjust the light color temperature to a range that is more comfortable for the eyes. However, no matter how good the eye protection lamp is, its protective effect on the eyes is limited. The best way to love and protect your eyes is to save them.

How to retain hyperopia reserve

Children from birth to preschool age have relatively small eyeballs and short eye axes. They almost all have a certain range of physiological hyperopia, which is called hyperopia reserve. This physiological hyperopia will gradually decrease with the growth of the eyeball and the increase of the eye axis, and eventually become emmetropia. After the child's eyes become emmetropia, if the eyes are abused, the eye axis will continue to lengthen and develop into myopia. The simplest and most effective way to retain hypermetropia reserve is to save eyes.

What are the treatments for dry eyes?

Dry eyes are a chronic ocular surface disease caused by multiple factors. Patients usually experience uncomfortable symptoms such as dry eyes, redness, pain, burning sensation, itching, photophobia, fatigue, foreign body sensation, blurred vision, etc.

There are many factors that lead to dry eyes, and the same patient may be caused by multiple factors. According to the causes and risk factors of dry eyes, it can be divided into the following 7 types: systemic factors, local eye factors, environmental factors, lifestyle-related factors, surgery-related factors, drug-related factors, other factors, etc. According to the main components or functional abnormalities of tears, dry eyes can be divided into 5 types: water-deficient dry eyes, lipid abnormal dry eyes, mucin abnormal dry eyes, tear dynamics abnormal dry eyes, mixed dry eyes, etc. The most common type of dry eyes in clinical practice is dry eyes caused by two or more of the above reasons.

Treatments for dry eyes include: treatment of the cause and elimination of the causes and risk factors; artificial tear replacement therapy, such as sodium hyaluronate eye drops, artificial tears, polyvinyl alcohol eye drops; drug treatment, such as glucocorticoids, cyclosporine, pilocarpine, neostigmine, vitamin A, etc.; meibomian gland massage, hot compress, pulse, acupuncture and other traditional Chinese medicine treatments; surgical treatment, such as lacrimal point or lacrimal duct embolization or closure, tarsal suture, lip gland transplantation, submandibular gland transplantation, etc. The doctor will choose the appropriate treatment method according to the patient's condition and personal constitution.

(The author is the chief physician of the Department of Ophthalmology, PLA General Hospital)