Wednesday, 24 June 2020

Occlusion therapy and Revitalvision therapy for Amblyopia

Amblyopia is a medical condition where the vision in one eye is reduced, early in life. It is also called Lazy Eye as the eye seems to move without control. Here the brain fails to process input from one eye favouring another, resulting in the decreased vision in the unfavoured eye.

Any  condition that affects the focussing of the eye can lead to Amblyopia, like irregularly shaped or inaccurate alignment of eyes; nearsightedness or farsightedness. It is recommended that all children between the ages of four and five have their vision tested. This rarely affects both eyes. 

The two common methods of treatment are:

Occlusion Therapy for children and young adults: 
When correcting refractive errors using spectacles/contact lenses fails, Occlusion Therapy is introduced. The vision to the healthy eye, yes, the healthy eye, is occluded or blocked by means of an external eye patch, forcing the brain to rely on the weaker eye.

However, Over Patching or Over Occlusion of the good eye can lead to Reverse Amblyopia, which is bad. This is why it is done only 4-6 hours a day. While the treatment can continue as long as the vision improves, it is not advised, if after 6 months there is no improvement, and other methods need to be sought.

Revitalvision Therapy for ages above 6 years.. 
This is a noninvasive method based on visual stimulation of perceptual learning and is specific to each individual. Through a computerised training programme based on what are called Gabor Patches, the eye’s sensitivity to contrast and clarity of vision, especially form vision, is improved by facilitating neural connections in the brain.

Visual Perception, or the ability of the brain to interpret what the eye sees, depends on the input from eyes and the working of the visual cortex. Revitalvision improves vision quality by enhancing this. Perceptual learning means practising certain visual tasks leading to visual performance improvements. Repetitive tasks initiate neural modifications leading to neural efficiency, thereby leading to improved vision.

Blog Reviewed By: Dr. Lalit Kumar
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Tuesday, 19 May 2020

Eye care tips for lockdown

The Covid-19 pandemic has caused the whole world to go into a lockdown. All of us, the old, the not-so-old and the young, are all spending more time indoors. And, we are all experiencing the effect that it has on our health, both mental and physical. 

As we stay indoors and spend more and more time looking at one type or another of glowing screens, trying to get work done from home or to be entertained, the human eye; that most overlooked of organs is taking up a lot of strain, and this manifests as; dry or watery eyes, shoulder and neck pain, blurring of vision and severe headaches. 

Following are some tips to take care of our eyes:
  1. The 20-20-20 rule: this rule says that after every 20 minutes of viewing, take a 20 second break and look at an object about 20 feet away. This repositions and refocuses the eye, reducing strain.
  2. Reduce screen time: unless absolutely necessary, reduce screen time on all your devices. 
  3. Take a break: get up, exercise, walk around the house, loosen your body and give your eyes something else to look at.
  4. Make an actual phone call: YES! Rather than texting or video calling, make an actual voice call. You will be surprised at how effective that direct human contact can be, both psychologically and otherwise, and give your eyes a break at the same time.
  5. Screen-free meal time: do not eat any of your meals in front of any type or size of screen. Make it family time. This is an idea that you could continue after lockdown lifts.
  6. Read a chapter from a book: yes, just a chapter, not the whole book, preferably in a well lit area. This is counterintuitive, but it works.

Then there are the traditional tips: washing face with cold water; applying cucumber slices or aloe vera to relieve eye tension; drinking lots of water and eating healthy food.

Blog Reviewed By: Dr. Lalit Kumar
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Tuesday, 18 February 2020

Multifocal Intraocular Lenses for Cataract Surgery

During lens surgery, natural lens are replaced by prosthetic lenses, which is Intraocular lenses (IOL), such as surgeries are performed to remove cataracts. In cataract surgery, the natural lens is removed to place a different clear lens in the position of the natural lens. Cataract patients were offered a lens called monofocal implantable lens that was not designed to make improvement in both near and distance vision, either near vision or distance vision in the past. Many patients used to chose the distance vision. Bifocals and reading glasses was the convenient requirement for near focusing and intermediate back then. Nowadays, multifocal intraocular lenses are replacing monofocal intraocular lenses because this surgery allows correction at all distances and making vision possible like natural vision. These lenses are often referred to as presbyopia-correcting IOLs.

The various types currently available are usually divided into two groups, accommodating IOLs and multifocal IOLs.

Accommodating IOLs
These IOLs are structured to work with the ciliary body, is a small muscle inside the eye. The ciliary body is a part of our normal near point focusing mechanism that we use throughout our lives. When we look anything closer or we attempt to focus on close range, these muscle contracts each time we see. Whenever, the muscles contracts, it allows our natural lens to change shape and increase power to bring near items into focus.

Multifocal IOLs
These lenses are designed in such a way to allow for intermediate, distance, and near focusing and it does not depend on the ciliary body muscle. The focusing power provided by these lenses is different than normal focusing that most people had during their younger adult life. Most of these lenses have some type of concentric rings etched into the surface that allows images at all distances to be focused on the retina. Because of this, it takes a little longer for people to adapt to them. Therefore, the brain must adapt to this new way of focusing. However, they work surprisingly well.

Organizations such as Amrit Hospital have the best doctor’s like Dr. Lalit Kumar, MBBS, MS (OPH) can provide resources and support to help you fully cure your vision problem.

Blog reviewed by: Dr. Lalit Kumar
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Monday, 2 December 2019

A step to prevent blindness

A group of eye conditions that causes damage to the optic nerves can be termed as glaucoma. Usually, the damage is caused due to high pressure in the eye. Glaucoma can cause permanent and irreversible loss of vision. Hence, it is also known as the ‘Silent Thief of Vision.’ 


Types of glaucoma
Glaucoma can be classified into three types that are:

1.Congenital or developmental glaucoma - a group of varied disordersHigh intraocular pressure is caused due to developmental abnormalities of the angle of the anterior chamber that obstructs the drainage of aqueous humor. 

2.Open-angle glaucoma - one of the common forms of glaucoma. There will be a slow increase of pressure in the eye that leads to loss of vision. The drainage angle that is formed by the cornea and iris will be open, whereas the trabecular meshwork will be slightly blocked. This causes pressure in the eye, which will slowly increase, leading to loss of vision.

3.Closed-angle glaucoma - also known as angle-closure glaucoma where the blockage is caused due to narrow angles between the cornea and the iris. The fluid cannot circulate through the eye, and pressure will increase. People with narrow drainage angles are more prone to angle-closure glaucoma.

Doctors recommend treating glaucoma at the early stages to preventd vision loss. The main concern is lower the eye pressure, and based on the situation, doctors would suggest eye drops, oral medications, laser treatment, and surgery. 

1.Eye drops - this is the first and foremost way of treating glaucoma. Based on the severity of the condition, the dosage differs among individuals. When identified in the early stages, eye drops can help reduce the pressure in the eye. 

2.Oral medications - oral medicines are prescribed by the doctors when eye drops alone cannot bring down the pressure in the eye.

3.Laser treatment - with the help of a small laser beam, the doctor will open the clogged channels in the trabecular meshwork.

4.Surgery - to control non-responsive glaucoma, doctors would suggest surgery. Along with Phaco IOL (intraocular lens implant), doctors would treat glaucoma by creating a new drainage channel in which the aqueous fluid can leave the eye and lowers the IOP (intraocular pressure). 

At Amrit Hospitals, doctors can help identify and diagnose glaucoma at the early stages to prevent vision loss with the help of the latest technologies.

Blog reviewed by: Dr. Lalit Kumar
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Tuesday, 22 October 2019

Revital Vision Therapy for Amblyopia or Lazy Eye

Amblyopia or lazy eye  is a condition occurring when the brain and the eye refuse to work together. It mainly affects a single eye because one eye has a stronger focus than the other. So the brain cannot recognize the blurry vision and relies on the vision of the stronger eye that gradually worsens the vision of the weaker eye. Amblyopia is also called a lazy eye, and it mostly occurs in infancy, but sometimes it can occur in adults too.


  • An eye that wanders in and out (Strabismus).
  • Eyes that do not work together.
  • Double images.
  • Head tilting.
  • Poor depth perception.
  • Blurred vision.
Factors associated with an increased risk of lazy eye include:
  • Premature birth
  • Small size at birth
  • Genetics of the baby
  • Developmental disabilities

Types of Amblyopia:

There are three types of amblyopia 

1.Strabismic Amblyopia
Here to avoid doubled visions, the brain rejects or does not respond to the visual images of the weak eye that lead to strabismic amblyopia. 

2. Refractive Amblyopia
In some cases, amblyopia occurs due to unequal refractive errors in both the eyes despite its alignment. Here the brain relies on the eye that has the correct refractive index and rejects the blurred vision.       

3. Deprivation amblyopia
This is a lazy eye caused due to condition that rejects light from entering and being focused in a baby's eye, such as a congenital cataract. Prompt treatment of congenital cataracts is necessary to allow normal visual development to occur. 

Revital Vision Therapy
It is a program to improve amblyopia to upskill your brain to see better without auxiliary surgery, enhancements, drugs, or side- effects. It is feasible to enhance brain processing by efficacious visual stimulation of the neurons, which is at the helm for vision in the primary visual cortex, long after the critical period. 

RevitalVision's neural training program is clinically and scientifically proven, unlike eye exercise programs that focus on relaxing eye muscles. 

During training sessions, a series of visual tasks and repetitive images train the brain and improve visual processing. Revital vision analyzes performance and continuously adjust the individually customized training sessions to improve the vision substantially.

At Amrit Hospital Chennai, our expert doctors and technicians strive to provide quality treatment for all your eye problems.
Blog reviewed by: Dr. Lalit Kumar
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Tuesday, 24 September 2019

What is Age-Related Macular Degeneration?

AMD is one of the leading causes of vision loss. AMD destroys macula, which is apart of the retina, which provides sharp and focused vision. The condition develops as you age. 
macular degeneration treatment chennai

There are two main types of AMD:


1. Dry Form

Here we can see the presence of drusen (yellow deposits) in the macula. As the amount of drusen increases, it leads to distortion in vision. It can also cause thinning of the light-sensitive layers of cells of the macula, which may lead to the death of tissues, and gradual vision loss. 

2.Wet Form

This is more serious than the dry form. Here abnormal blood vessels are grown from the choroid membrane behind the macula. Your vision may get distorted because of the blood vessels leak, and the fluid enters into the retina. It can also lead to blind spots and loss of the central vision.

Symptoms of AMD


macular degeneration treatment in chennai

  • Blurry vision.
  • Straight lines look curved
  • Difficulty in reading.
  • Can not see details in low light.
  • Highly sensitive to glare.
  • Central vision will not be clear.

Risk factors

  • Age – It is the number one risk factor that leads to AMD.
  • Family history - children with parents suffering from AMD have an increased chance of acquiring AMD.
  • Smoking- anything which reduces oxygen supply to the retina can cause AMD.
  • Gender - Females are more likely to get AMD.
  • Too much exposure to the sun can lead to AMD.
  • Obesity.
  • Diet plays a vital role in developing AMD.
  • High blood pressure also restricts oxygen flow to the retina, thus leads to AMD.

Tips for Protecting Eye Health and Preventing Macular Degeneration

  • Eat a nutritious and healthy diet which includes green leafy vegetables, yellow and orange fruit, fish, and grains.
  • Try to maintain a healthy diet.
  • Quit the habit of smoking.
  • Your blood pressure must always be in control.
  • Wear sunglasses when exposed to the sun.
  • Consult an eye specialist for a regular eye examination.

Treatments for AMD


The treatment for early dry AMD is  good nutrition .You must have a healthy diet plan by including food which is rich in antioxidants that can keep the cells of macula healthy. Wet AMD can be treated with anti VEGF injection for regression of abnormal blood vessels . Sealing of the blood vessels associated with wet AMD can be done with a laser. Implantable Telescope Technology is another method of treating AMD Where they implant a tiny telescope which can help to improve your vision. Intake of certain vitamin tablets can also increase the quality of vision.
At Amrit Hospital Chennai, our expert doctors and technicians strive to provide quality treatment for all your eye problems.
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Blog reviewed by: Dr. Lalit Kumar
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Thursday, 19 September 2019

All You Need To Know About Cataract

Eyes are the most important organ of sense. But in spite of it being an organ that gives us the unmatched and unimaginable power of vision, we tend to neglect them.  Many issues strike the organ and some of them stand to be very severe. One such severe issue faced by people is a Cataract makes the vision blurry. It’s common among older people but people of other age groups get affected by this disease too.

 What can cause Cataracts?

Cataracts develop when there is a protein buildup in the lens of the eyes, preventing light to pass through the lens thus making the vision uncomfortably cloudy and blurry.  Some people are even posed with the threat of losing their eyesight due to cataract. This depends on the overall health condition of the patient and the type of Cataract he is affected. Different types of Cataracts are caused due to several reasons as follow:

  •     Age-related: A few cataracts are formed due to old age
  •     Congenital. Babies can be born with cataracts and even can be affected by the condition in their childhoods. This is known as congenital cataract.
  •     Secondary. If one is affected by medical conditions such as diabetes, he or she is more likely to get affected by secondary cataract. This can also be caused by being around ultraviolet light and toxic substances.
  •      Traumatic. As the name suggests, traumatic cataracts are formed as a result of some accident.
Along with these, there are various other reasons for getting a cataract that include smoking and drinking.


Cataracts take time to start affecting you and until it starts blocking light, it may not even come to your notice. But once it starts blocking the light you may notice a few symptoms as follow:
  •     Foggy, cloudy and blurry vision
  •     Colours may not seem the same.
  •     Night blindness
  •     One may have double vision
  •     Specs and contact lenses may not work effectively

How are Cataracts diagnosed?

Once cataract is suspected, the eye doctor prescribes tests to check the condition of the eye and the vision. He dilates the pupil to parts of the eye, especially the lens.


 Treatment of Cataract

Cataract can be cured by the use of corrected spectacles and contact lenses in a few cases. In other cases where these don’t work and cataracts have become major issues in one’s daily life, cataract surgeries can help.


Cataract Surgeries are done on an outpatient basis and it’s a quick and successful process. The surgery involves removing the original lens from the eye and replacing it with a man-made one.

Prevention is better than Cure

Cataract prevention is quite difficult as the reasons for cataract are very uncertain. Getting your eyes checked regularly, washing them with clean water and maintaining proper hygiene can reduce the risk of getting affected.

Blog reviewed by: Dr. Lalit Kumar
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