You are here

Eye Care | Diseases Types Risk Factors | Prevention | Food Habits


Eyes are the most important sensory organs in our body.  With the advancement in the age of an individual, vision loss due to eye diseases increases. Though eye-related issues are common in many people nowadays, all of them do not necessarily cause serious problems if timely corrective action is taken. However some of them may lead to a permanent loss of vision. According to the National Eye Institute (NEI) and the CDC (Continuous Discharge Certificate), the most common eye diseases occur in people over age 40. NEI has identified common eye diseases in people are age-related macular degeneration, cataracts, diabetic eye disease, glaucoma.

Types of Eye Diseases:

Here we discuss some of the more common types of eye diseases and their causes: 

  1. Macular Degeneration:

Macular degeneration is also called as age-related macular degeneration (AMD) because it is commonly associated with aging. It is a chronic, progressive disease that destroys sharp, central vision. Central vision is required to do tasks such as reading and driving. AMD affects the macula, a tiny part in the central portion of retina that allows to see fine detail.  There are two types of AMD called “dry”, “wet”. Dry is the most common AMD, with 90% of AMD cases are dry.  Wet is the less common AMD, though not totally non-existing .

Risk factors of Macular degeneration:

People who:

  • are over age of 60
  • have high blood pressure
  • have a family history of AMD
  • smoke profusely
  • are obese


Symptoms of Macular degeneration:

Dry AMD may take 5 to 10 years before your loss of vision but Wet AMD can cause sudden and dramatic changes in vision. AMD can cause a variety of symptoms that can affect your daily life:

  • Straight lines appearing wavy, a common early symptom of wet AMD
  • Blurred vision is a common early symptom of dry AMD
  • Difficulty seeing details, like faces or words on a page
  • Colors  that seem faded
  • blind spots blocking your central vision


  • Protection from sunlight, consuming a balanced diet and quitting smoking can reduce the risk and progress of macular degeneration.
  1. Cataracts:

 Cataract is one of the eye diseases in which the clear lens of the eye becomes cloudy or opaque, causing a decrease in vision. Cataract is very common in older people. It can occur in either or both eyes. It cannot spread from one eye to the other. Cataracts develop slowly and don't disturb your eyesight early on. Primarily, new glasses, brighter lighting, anti-glare sunglasses or magnifying lenses can help to deal with cataract. But if impaired vision interferes with your usual activities, you might need cataract surgery. It involves removing the cloudy lens and replacing it with an artificial lens.

Causative factors of Cataracts:

  • Aging
  • Diabetes
  • Excessive exposure to sunlight
  • Smoking tobacco and narcotic products
  • Obesity
  • Family history
  • High blood pressure
  • Previous eye injury or inflammation
  • Previous eye surgery


Symptoms of Cataracts:

 Some of the common symptoms of Cataracts are

  • Blurry or dim vision
  • Colors appearing less vivid
  • Sensitivity to light and glare and seeing "halos" around lights
  • Not being able to see well at night
  • Frequent changes in prescription of  eyeglasses or contact lenses
  • Double vision


  • Researches recommend eating green leafy vegetables, fruits, and other foods with antioxidants can help reduce the risk of age-related cataract. Wearing sunglasses and a hat with a brim to block ultraviolet sunlight may help to delay cataract and quitting smoking can also reduce the risk of cataract.
  1. Glaucoma:

Glaucoma is a group of eye conditions that can damage optic nerve and can result in blindness or vision loss.  It is the leading cause of blindness in the US.  It is often related to buildup of pressure within the eye that causes damage to the optic nerve.  Often there are no signs or symptoms in the early stage of the disease. Glaucoma can lead to a decrease in peripheral vision and eventually blindness if left untreated.

Causative Factors:

There are several factors causing glaucoma; people at risk should get their eyes examined at least every two years.

  • Old age
  • Diabetes
  • Hypertension
  • Eye injuries or conditions
  • Eye surgery
  • Myopia (nearsightedness)


Symptoms of Glaucoma:

  • Peripheral vision is gradually lost. This nearly affects both eyes.
  • The patient has tunnel vision, in advanced stages


  • There is no known way to prevent glaucoma and there is no cure for glaucoma but there are medications and surgery available that can help to stop further vision loss.
  1. Diabetic eye disease:

Diabetic eye disease is a group of eye conditions that can affect people with type1 and type2 diabetes, including cataracts and glaucoma discussed above and also diabetic retinopathy.

Diabetic retinopathy:

Diabetic retinopathy damages blood vessels inside retina and the light-sensitive tissue at the back of eye. It is the common cause of vision loss among people suffering from diabetes and it is the leading cause of vision impairment and blindness among the aged working adults.

Risk factors of Diabetic retinopathy:

  • People with some types of diabetes like type 1, type 2 and gestational diabetes are at risk of diabetic retinopathy. Risk increases with the longer periods of suffering from diabetes.
  • Pregnant women with gestational diabetes are at a higher risk of developing diabetic retinopathy
  • Smokers are at a greater risk of blood vessel disorders, including retinopathy.


Symptoms of Diabetic retinopathy:

 The early stages of diabetic retinopathy usually have no noticeable symptoms. Symptoms may only become noticeable once the disease advances, but the typical symptoms of retinopathy to look out for include:

  • Blurry or double vision
  • Rings, flashing lights, or blank spots
  • Dark or floating spots
  • Pain or pressure in one or both of your eyes
  • Trouble seeing things out of the corners of your eyes


  • Effective ways to reduce the risk of Diabetic retinopathy is by controlling your blood sugar levels and blood pressure levels, maintaining health diet, quit smoking,following an exercise routine and seeing your eye doctor once a year for an eye exam.
  1. Conjunctivitis:

Conjunctivitis is also known as pink eye. Conjunctiva covers the white part of the eyes and the underside of the eyelids. It is a very common condition which can occur in one or both eyes. There are three types of conjunctivitis: Viral conjunctivitis, Bacterial conjunctivitis and allergic conjunctivitis.

  1. Bacterial Conjunctivitis:

The infection causes from bacteria which forms pink eye. Bacterial conjunctivitis makes eyes red with a lot of sticky pus.

  1. Allergic Conjunctivitis:

Allergic conjunctivitis comes from an allergic reaction. It makes eyes itchy, watery and red.

  1. Viral Conjunctivitis:

Viral conjunctivitis is a common type of pink eye. It is very contagious and spreads easily in crowd places. It causes your eyes become red with watery discharge and burning.


Symptoms of Pink Eye:

The symptoms of pinkeye are

  • Redness in the white part of  eye balls or inner eyelids
  • Increased amount of tears
  • Especially after sleep, thick yellow discharge that crusts over the eyelashes,
  • Green or white discharge from eyes
  • Itchy eyes
  • Burning eyes
  • Blurred vision
  • Increased sensitivity to light


  • Wash your hand with soap and warm water before applying ointment or drops to infected eyes.
  • Avoid rubbing your eyes since it makes the problem more severe or causes to spread to other eye.
  • Clean with cotton balls or wet cloth any discharge around your eyes and throw away the cotton ball immediately after use.
  • Don’t share your personal belongings such as towels, pillows, washcloths, handkerchiefs, eye drops etc.
  • Don’t use swimming pools.

Add new comment

This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
5 + 0 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.