Causes for swollen eyes
Crying: Often after crying a lot, you must have realised that your eyes swell and your lower eye lids become puffy. This happens because the lacrimal glands in the eyes that produce tears are over-driven when strong emotions are evoked. To prevent loss of extra loss of fluids, the tissues around the eyes absorb some tears making the eyes appear swollen and puffy. Plus, the autonomic nervous system gets activated and increases blood flow to the face, enhancing the puffy appearance.
Ageing: As you grow older, your eyes starting losing the strength to function optimally like all other organs do. Plus, factors like poor diet, stress and lack of sleep that you dealt with when you were young reflect through your eyes when you grow old.
Excessive alcohol intake: People who drink heavily often get up the next morning with swollen or puffy eyes. Alcohol is a natural dehydrating agent. When you drink excessively, your body has to respond to it by retaining body fluids, which causes the eyes swell.
Viral conjunctivitis: If your puffy eyes develop along with other signs like itchiness, redness and constant watering, you could be suffering from ‘pink eye,’ or viral conjunctivitis. Conjunctivitis is basically inflammation of the linings called conjunctiva present in the internal surface of the eye.
Styes: Clinically caused by infection of the bacterium Staphylococcus, styes are one of the most painful causes of swollen eyes. They usually appear as reddish bump on the edge of the eyelid and are extremely tender to touch.
Allergies: If you notice swelling of your eyes after applying an eyeliner or mascara, then you’re definitely allergic to some chemical present in it. Makeup contains certain components that your immune system may recognise as foreign. In response to those chemicals, the immune cells release certain mediators called histamines to protect your eyes from these suspected allergens. These mediators cause dilation of blood vessels in the eyes resulting in itchy mucous membrane and redness within minutes of exposure to the allergen.
Hormonal problems: Those with an overactive thyroid (hyperthyroidism) gland may often have swollen, puffy eyelids. Bulging eyes, drooping eyelids (ptosis) and double vision are some other associated signs of puffy eyes caused due to hormonal problems
Eye injury: Eyes are the most delicate part of the body. A minor injury or trauma in any form is enough to make them appear puffy and swollen. Trauma to the eyelid can even occur when you rub your eyes for a long time. more