Glaucoma: An Overview
This disease can be developed or inherited; it usually refers to the accumulation of fluid inside a person's eyes leading to excessive pressure on his or her optic nerve.

How to Diagnose the Symptoms of Glaucoma-

A Fundamental Eye Examination: An experienced eye doctor will check the dilated pupils of your eyes so as to take a closer look at the optic nerve that further discerns the stage of glaucoma a patient is in. Doctors tend to keep track on the sequential progression of glaucoma and its specific mode of treatment through pictures of the optic nerve taken during an examination.

Tonometry may also be performed:Signs of Glaucoma may be spotted through the procedure called tonometry where the doctor will test a person's eye pressure and so on so forth. A visual field test might also be conducted to check if the patient can see things at the periphery of his line of vision. 

Symptoms that will help a doctor identify this condition in people:-

A loss of peripheral vision is experienced in the early stages of glaucoma.
A person may see halos when in the presence of bright lights.
Your eyes could turn red.
Hazy or blurry vision is a problem faced by young children affected with glaucoma.
Glaucoma could be accompanied by headaches and eye pain.
An affected person might repeatedly feel nauseous.
Ways to Treat Glaucoma:-

Microsurgery can effectively treat Glaucoma: Microsurgery can be performed in various ways. There is one way in which a channel is made to pump out the fluid creating extra pressure on the optic nerve. This method is referred to as trabeculectomy.

Eye Drops: Eye drops can relieve you from painful glaucoma. They are known to control the formation of excess fluid in a person's eye. In some cases, they can induce the accumulating fluid to flow out of the patient's eyes.

Laser Treatment: Laser surgeries can be undertaken to get rid of glaucoma. Laser can help in moving out fluid from the eyes of the affected person. It successfully hinders fluid blockage as well. There are different kinds of laser treatments available to cure glaucoma.

Diagnosis and Treatment for Glaucoma

A common headache can have a number of reasons behind it, such as defective vision, hetrophoria or convergence deficiency, etc. Now, the question arises as to how they can cause headache. Read on to know more...

Q. Why should defective vision cause headache?

To attain a perfect vision, eyes with defective vision have to make sustained extra efforts, which results in headache. Even if the refractive error is very small, it can be the cause of headache. More prolonged the working and smaller the print, higher the incidence of headache.

Q. Can this occur at all ages?

Yes, it can occur at all ages. However, with age, the resistance decreases and hence elderly people are more prone to get headache. More the use of computer, mobiles, TV or prolonged studies precipitates headache

Q What is Hetrophoria?

Normally, both eyes always remain parallel, but in some cases, eyes have slight tendency to develop minor squint, may be convergent or divergent. This is called Hetrophoria or Latent squint. Such patients have to take extra strain to keep the eyes straight

Q. What is convergence deficiency?

For reading, both eyes have to converge and if there is weakness of convergence, extra strain has to be put on the eyes, which cause headache.

Q. What is the ideal method of refraction in young patients, I,e below 40 years?

Ideal method is to dilate the pupil with Tropicasyl plus drops. This has the advantage that the doctor can see the retina and Optic Disc. This is important to exclude any involvement of brain as the cause of headache. It also relaxes accommodation and hence provides correct refraction. In cases of Hypermetropia, it is extremely essential to dilate the pupil.

Q. What is the role of Autorefractmeter (a computer) in refraction?

It is a very important instrument to provide correct refraction, but it cannot be totally relied upon. Some opticians rely on it and give wrong numbers.

Q. What is acceptance Test?

You have refracted the eyes with Autorefractmeter or Streak Retinoscope but exact power is what a patient accepts. This is very important.

Q. What is astigmatism?

There is a difference in refraction in different meridians and it is important that a cylinder number is prescribed in correct axis. This is a difficult task and needs lot of experience.

Q. Is it important to correct astigmatism?

To relieve headache and strain on the eyes, it is very important that exact cylinder is prescribed.

Q. What is the role of exact centring of Optical Lenses?

You may give correct number, but if the centre of the Optical lenses and cornea do not coincide, satisfactory results are not obtained. To dispense correct lenses is a big art and the Optician must be qualified and well experienced.

Q. Does the quality of lens affect the visual comfort?

Yes, it is important that quality of lenses should be good, preferable fibre lenses which are Ant reflect coated. Crizal coating with capability to block the UV rays are very popular.

Conclusion: Refractive errors are important cause of headache and needs proper examination of the eyes, preferably after dilating the pupil. Astigmatic error even if too small may be the cause of headache. Spectacle dispensing is an art and a patient must select proper optician. Spectacles if advised for constant use must be used constantly to get full relief.

Defective Vision - Can it be a Cause of Your Headache?

Cataract is clouding of clear natural lens present inside the eye, this is a major cause of decreased vision in elderly. Cataracts can occur in one or both eyes, usually developing very slowly. Things look blurry, hazy, less colourful and less sharp with cataract. 

Most cataracts are related to ageing, however many other factors can either increase the rate of formation or cause cataract formation. 

Causes of Cataract Formation-

Ageing: Most common cause. As the proteins present in the lens of the eye degenerates over the years ( just like any other organ) cataract is formed. If you are having Diabetes or hypertension, the rate of formation gets accelerated.

Radiation: Prolonged exposure to ultraviolet rays, especially UV-B rays, results in cataract in your eyes. Wearing sunglasses in the daytime helps in slowing down the process of cataract.

Genes: Many genetic disorders can result in congenital cataract ( cataracts present since birth) or early formation. Like in Lowe syndrome or Down's syndrome. 

Lifestyle Choices: Cigarette smoking, long hours of sun exposure regularly, antioxidant, poor diet etc. are responsible for the onset of cataract.

How To Detect Cataract?

Certain signs and symptoms suggest the existence of cataract in the eye. Depending on the type and level of cataract, problems in vision occurs. The main symptom is foggy cloudy vision as if seeing through a dirty glass window. 

Other Symptoms are- 

inability to see clearly in bright light (during the day) which becomes better in dim light ( evening and night) and vice versa. 
watery, tired eyes - mild pain in and around eyes. 
yellow tinge in vision 
Halos around light bulbs or bright light. 
If you are experiencing above symptoms and having problems in viewing things clearly, visit an ophthalmologist and get your eyes checked.

Foggy and Cloudy Vision - A Sign Of Cataract?

Most of us take our eyes for granted. It has been often noticed that an individual splurges on expensive sunglasses for looking smarter. But, when it comes to the health of eyes, he or she is either ignorant or simply reluctant to do anything. This tendency is bad for the health of your precious eyes.

Remember, how you use them to stare at the screens of your gadgets all day long. Take out some time from your busy schedule and take care of your eyes. They are precious and vulnerable too.

Follow the tips below to keep your eyesight intact till your dying day:

Eat right for a good vision: It is very important to provide the right and sufficient amounts of nutrients to your body for developing or maintaining a good eye sight. Include nutrients such as omega-3 fatty acids, lutein, zinc, and vitamins C and E in your regular diet to boost your eyesight. Food items like green and leafy vegetables, salmon, tuna, and other oily fish, eggs, nuts, beans, and other non-meat protein sources, oranges and other citrus fruits or juices and oysters and pork are excellent for the eye. The intake of a balanced diet keeps you away from diabetes, which causes blindness.
Give up smoking: Cigarettes or other tobacco products are bad for your eyes. They make your eyes more vulnerable to diseases like cataracts, optic nerve damage, and macular degeneration.
Guard your eyes from sunlight: It has been found that long exposure to sunlight leads to damage of the eyeballs. This happens as the UV rays in sunlight have an adverse impact on our eyes. You must put on sunglasses when you are outdoors for a longer period. You must choose sunglasses which give you 90 to 100 percent protection against sunlight. UV rays can cause cataracts and macular degeneration.
Avoid the screen: It is advisable to not spend long hours sitting in front of the computer screen or TV. Take breaks while working on the computer. Also, remember blinking your eyes while staring at the screen to avoid drying up of the eyes. Blinking increases tear production, keeping the eyes moist and healthy.
Use safety devices: If you work with hazardous substances, it is advisable that you put on safety devices on your eyes for their protection.
Hydrate your eyes: In order to have a good vision, you must hydrate your eyes by splashing water on your eyes wide open at specific intervals in a day. When you wash your face after returning from outside, don't forget to wash your eyes as well. As you splash water on the eyes, the dust particles on the surface of the eyelid, gathered from outside, gets washed away. f you wish to discuss about any specific problem, you can consult a ophthalmologist.

Tips for Improved Eye Health

LASIK stands for Laser In-situ Keratomileusis. This is a common eye surgery that helps in correcting vision problems. During this procedure, the cornea of the eye is cut across by a medical expert to raise the tissues and reshape them to correct vision. LASIK is suitable for patients who have shortsightedness, long sightedness or who suffer from astigmatism.

Here are the 5 benefits that a LASIK surgery offers:

1. Improved vision

A study reveals that 95% of the people who underwent this surgery achieved uncorrected visual acuity of 20/40 and 85% of the people achieved 20/20 vision. This procedure ensures that a patient achieves enhanced vision.

2. Quick results and recovery

This surgery enables you to return to your normal schedule immediately the day after the surgery. You can have clear and improved vision within a day.

3. Long- lasting outcomes

A minimum timeframe of 3 months is required for the eyes to adjust, after which LASIK results are permanently noticeable in a patient. No follow up procedures are required unless something wrong went with the surgery. The patient will continue to have improved vision unless there is any normal loss due to illness or aging.

4. No need of glasses

You no longer require glasses as your vision turns to normal post-LASIK surgery.

5. Goodbye contact lenses

LASIK surgery will help eliminate the need for contacts. You will be able to avoid all the problems pertaining to wearing a contact lens, including lens solution.

5 Benefits of Lasik Surgery

People are well aware of the harmful effects that UV rays have on the skin, but very few know that UV rays can damage their eyes as well. The tissue that human eye is made up of is one of the most sensitive tissues in the body and hence, the most vulnerable. The increasing level of UV radiation reaching the Earth s surface every minute has made it indispensable to take the required precautionary measures to protect the eyes.

What are UV rays?

Sunlight consists of 3 types of radiations - Infrared, Visible light and UltraViolet. Artificial sources like lasers, tanning beds and welding machines also emit UV radiation.

There are three types of UV radiations - UV-A, UV-B and UV-C. 

UV-C is absorbed by the ozone layer and does not possess any risk. It is UV-A and UV-B radiations that adversely affect the eyes and vision.

Impact of UV rays on  eyes

Too much exposure to UV rays can affect vision, harm the eyes, and deteriorate overall eye health. There are various eye problems that are aggravated by excessive exposure to UV radiation:

Macular Degeneration: It is caused by damage to the retina over time by UV rays. It leads to age-related blindness. Too much exposure to UV rays increases the risk of developing macular degeneration.
Cataract: It is the clouding of eye s natural lens - the part of the eye that focuses the light we see. Too much exposure to UV rays increases the risk of developing cataracts. 
Pterygium: Often known as  surfer s eye , pterygium is a pink, non-cancerous growth that is formed on the conjunctiva. UV rays are believed to be responsible for the development of this growth.
Skin Cancer of the Eyelids: Too much exposure to UV rays can cause skin cancer in and around the eyelids.
Photokeratitis: Popularly known as corneal sunburn or  snow blindness , photokeratitis is caused due to excessive short-term exposure to UV-B rays. Photokeratitis occurs when you spend long hours at the beach or skiing. It sometimes leads to temporary vision loss. 
How to protect the eyes from harmful UV rays?

Here are some tips to help ensure that eyes are protected against harmful UV rays:

Always use quality sunglasses that block out 99-100 percent of both UV-A and UV-B radiation when outdoors.
Stay away from tanning beds, and if you use them occasionally, always wear eye protection. 
Wrap around frames should be used if you spend a lot of time outdoors.
Be sure to see your doctor at least every two years.

UV Rays - Are They Damaging Your Eyes?

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