Eyes are the most vital and delicate organs of the human body and they start functioning as soon as we are born. Although babies are born colourblind, but they slowly develop their eyesight within a very brief period of time. Our eyes enable us to see. Although we think that we know everything about our eyes but the best opthamologist in Delhi lays down certain facts that are hardly known by us. Our eyes function 24/7 and hence the muscles of the eyes are the most active of all the muscles in our body.
If a person has blue or green eyes it is possible that his later generations may show the same trait however the best ophthalmologist in Delhi states that having blue or green coloured eyes is a recessive trait and even if nobody from the earlier generations of a person had coloured eyes, it is possible for the future generations to have them.Some people may even be born with two different eye colours. A person suffering from such condition is said to be heterochromatic and the the condition is called heterochromia. In such cases lenses can be used to fix the problem.
As mentioned earlier eyes are very delicate and slide scratch or impurity in the eye can be very irritating and painful. However eyes heal very quickly. In case of a normal scratch, it may take upto 48 hours to heal completely as suggested by best eye hospital in delhi
Increasing pollution and excessive use of personal computers, laptops, and mobiles is the major reason for various eye-related diseases nowadays. Dust particles present in the atmosphere can enter our eyes and cause irritation and you in infections. Hence it is very important take care of our eyes especially when we are outside. According to the best opthamologist in Delhi, ultraviolet radiations coming from the Sun are also extremely fatal for the eyes and it is advisable to wear Sun shades while going out as they are not only protect the eyes from the solar radiations but also stop atmospheric impurities from entering our eyes.
An average human beings about 12 times in a minute and an average blink lasts for about 1/10th of a second. Blinking can be voluntary as well as involuntary and it helps to relieve the eyes from strain and stress. However excessive blinking indicates that there is some problem with the eyelids or the upper surface of the eye.
As far as the infants are concerned, they develop proper eyesight with time. An average baby takes about 8 weeks to completely focus on one object. Even at this stage, they are still not properly coordinated and they take approximately 2 months to develop proper coordination. The tear ducts of infants are also underdeveloped and do not produce tears till they are 4 weeks old.
Due to advancements in the field of medicine and technology it has now become possible to restore a person's eyesight by surgical process. However it is yet not possible to completely transplant an eyeball. As the optic nerve that connects the eye to the brain is extremely sensitive and it is not possible to reconstruct it with accuracy.
The cells in our eyes are of different shapes and forms such as rod shaped and cone shaped. Rod shaped cells are associated with imparting vision where as cone shaped cells help us to distinguish between different colours. Both are equally important and help in proper functioning of the eyes.
Around 39 million people all around the world are not able to see and even more suffer from visual impairment which may be present by birth or a result of an accident or injury.
0 comments:
Post a Comment