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Blindness Health Feed

Usher Syndrome - What Should You Know?

M.B.B.S, MS ENT, MRCS Ed ENT, Fellowship Golf
ENT Specialist, Delhi
Usher Syndrome - What Should You Know?

Usher syndrome is a genetic disorder that is characterized by complications in vision and hearing; the most common of them being partial/complete loss of hearing and retinitis pigmentosa. Retinitis pigmentosa is characterized by progressive deterioration of the retina, resulting in deprivation of peripheral vision and subsequent night blindness.

The symptoms and its rate of progression usually vary among people. Usher syndrome is classified into three types:

  • Type 1: In this type, children are born with balance issues and hearing loss problems. The symptoms of night blindness and loss of peripheral vision associated with ‘Retinitis Pigmentosa’ only appear in the early stages of adolescence.
  • Type 2: In type 2, children are born with moderate to mild hearing loss problems. Retinitis Pigmentosa develops soon after the child reaches adolescence.
  • Type 3: In type 3 Usher Syndrome, children are usually born with normal hearing skills, however, loss of hearing and Retinitis pigmentosa occur soon after puberty.

Hearing loss in Usher syndrome occurs when the nerve cells that are present in the cochlear (inner ear’s spiral cavity) are affected by genetic mutation. A similar problem occurs in the cells of the retina leading to loss of vision. These cells allow conversion of light into electrical signals for the brain to interpret them. Both the parents need to pass the mutated gene to the child for it to be affected. If the child has only one gene, then he/she rarely develops the symptoms.

This disorder does not have any prescribed course of treatments. The vision loss that occurs in this disorder can be slowed down by nutritional therapy. This therapy involves providing the body with essential amounts of vitamin A which can help in reducing vision loss. In case you have a concern or query you can always consult an expert & get answers to your questions!

411 people found this helpful

Diabetes - Why It Is The Worst Disease For Your Eyes?

Dr. Ravindra M.S. 86% (245 ratings)
MBBS, MD - Ophthalmology, Fellowship in Vitreo Retina, Fellowship in Cornea
Ophthalmologist, Bangalore
Diabetes - Why It Is The Worst Disease For Your Eyes?

If you are diabetic then it is important that you visit your Ophthalmologist for regular Retinal check-ups. Even if you no eye sight problem at all  Diabetes is known to be one of main causes for blindness in this modern times.  If you suffer from bouts of blurred vision then it can be as simple as fluctuating blood sugar levels in the body. Hence, don't make new glasses if your blood glucose is high or fluctuating. Wait till about 3 to 4 weeks after it reaches stable levels. 

How diabetes affects your eyes?
The lens of your eyes can swell in diabetes, and this blurs your vision.  

What are the serous problems that are caused by diabetes?
Cataract: Cataract occurs when the lens of the eye become foggy. Although cataract mostly occurs in people who are above fifty, one can get this at an earlier age in diabetics. It progresses at a much faster rate than usual in diabetics. Cataracts also makes retinal assessment more difficult for your Retinal surgeon. Once the diabetes is under control, diabetics can comfortably undergo modern cataract surgery. Healing will be as good as in normals, and visual recovery will be excellent if there is no Retinopathy. The modern topical Phacosurgery and IOL implantation can be performed with a hospital daycare stay of only few hours, and almost all the activities can be resumed on the very next day. There is no need to stop blood thinners. 

Glaucoma: This is another disease that can silently cause blindness in diabetes.  Due to the non draining of fluids from the eye, the intra ocular pressure goes up, and this causes damage to the delicate Optic nerve of the eye.  The vision remains spuriously good till the end stages. Hence annual eye pressure check up is mandatory in Glaucoma. Glaucoma tends to run in families. If Glaucoma is diagnosed or suspected, OCT of optic nerves and Ganglion cell layer and Visual fields are periodically performed to assess the possible worsening. Once damaged, the ganglion cells and the optic nerve cannot be rejuvenated. So prevention is the main stay of treating this disease. Usually eye drops will be prescribed, which should be used strictly as per advise. Sometimes a surgery is advised.  

Diabetic Retinopathy:  is a progressive damage to the fine vessels and to the nourishment of the retina. It can occur in either type 2 or type 1 diabetes. Till end stages of the illness, there may not be any symptoms, and vision will remain good! There are two major types, Macular where fluid accumulates in the central retina, and Proliferative, where retinal ischemia sets in  causing vaso proliferation, which cause bleeding inside teh eye.  If not treated in early stages, both of them can lead to blindness. Retinal LASERS, Anti VEGF injections and vitreo retinal surgery are the common approaches, depending on the seriousness. There has been tremendous improvement in the surgical techniques in advanced cases. 

If you have of diabetes or even borderline diabetic tendencies, it is advisable to periodically check your blood sugar levels, Hemoglobin, Creatinine, Blood pressure & Lipid levels  and also get your eyes checked at regular intervals. It is recommended that you need a pupil dilated vitreo retinal assessment as soon as you are diagnosed to have diabetes, and follow up once an year. If you already has Diabetics retinopathy, you may be asked to review once in 3 to 6 months. 

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Color Blindness - What Should You Know?

Dr. Sanjay J. Chhabra 87% (10 ratings)
MS - Ophthalmology
Ophthalmologist, Ahmedabad
Color Blindness - What Should You Know?
Color blindness is a disorder that renders people incapable of differentiating between colors. Those who are affected by this condition cannot recognize some colors. Color blindness affects a very small percentage of global population but it can render people unfit for certain professions such as armed forces and also interfere with driving and other activities. This condition does not have a cure and it is only diagnosis that can help people deal with the problems that color blindness brings with itself. So, here is a short quiz to help you learn more about color blindness.
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7 Causes Behind Night Blindness!

Ophthalmologist, Ahmedabad
7 Causes Behind Night Blindness!

Night blindness is also called nyctalopia.It's a type of vision impairment. People with night blindness experience poor vision at night or in dimly lit environments. It is not a disease in itself, but rather a symptom of an underlying problem, usually a retina problem.

What Causes Night Blindness?
A number of eye conditions can cause night blindness, including:

  1. Nearsightedness or blurred vision when looking at faraway objects.
  2. Cataracts or clouding of the eye's lens.
  3. Retinitis pigmentosa, which occurs when dark pigment collects in your retina and creates tunnel vision.
  4. Vitamin A Deficiency
  5. Zinc Deficiency
  6. Dry Eyes
  7. Diabetes

Are the Symptoms of Night Blindness?
The sole symptom of night blindness is difficulty seeing in the dark. You're more likely to experience night blindness when your eyes transition from a bright environment to an area of low light, such as when you leave a sunny sidewalk to enter a dimly lit restaurant. You're likely to experience poor vision when driving due to the intermittent brightness of headlights and streetlights on the road.

How can I Prevent Night Blindness?
You can't prevent night blindness that's the result of birth defects or genetic conditions, such as Usher syndrome. You can, however, properly monitor your blood sugar level and eat a balanced diet to make night blindness less likely. 

Orange colored foods are excellent sources of vitamin A, including:

  1. Cantaloupes
  2. Sweet potatoes
  3. Carrots
  4. Pumpkins
  5. Butternut squash
  6. Mangoes

What are the Treatment Options for Night Blindness?
The treatment will depend on its causes.

  1. Nutrient deficiency (Vitamin A and Zinc) is the easiest to treat. 
  2. If the cause is cataract, you can go for cataract surgery to remove the clouded lens and replace it with artificial intraocular lens. Vision is usually dramatically improved after surgery
  3. For dry eye syndrome, lubricate your eyes with artificial tear drops as they provide instant relief. Just make sure that they are without preservatives. 
  4. Diabetic retinopathy can be prevented with tight control over blood sugar, active lifestyle and good dietary habits.
  5. As for retinitis pigmentosa, unfortunately there are no treatments available. Thankfully, new research is showing that vitamin A might have a slowing effect on the progression of this eye disease. In case you have a concern or query you can always consult an expert & get answers to your questions!
3688 people found this helpful

I do not know from where to start. I am a 24 years old male. I am a mechanical engineering graduate of 2016 .While I was taking admission into diploma course in 2009 I had to appear for medical ,there the doctor told me that I have colour blindness so I can not make medical certificate. But on insisting he made my medically fit certificate. I took admission and forgot all these scenes. While taking admission in btech they did not take Colour blindness test so I again get admitted to my graduation. But problem starts in 2nd year. When I researched about colour blindness, I found that there is no place for a person like me in any company There I started taking tension. over thinking and started living alone. I did not tell anyone in family. Due to this I used to spend my all time in mobile .Slowly I got addicted to daily masturbations .from here my mind stopped taking decisions. I used to be very good in aptitude and math. I was a bright student but when I sat for my campus placement I was unable to think on logical questions. I did not got anu placement from college. After graduation I tried to prepare for govt exams for 2-3 months but I was unable to focus and performed badly so I left that. Somehow I got a job in a newspaper printing company .While submitting medical I got my medical made by help of my uncle who is pharmacist. Thus I got job. But here I got more trouble as being a supervisor I need to check colour are properly in newspaper. I found myself unable to see clearly like others. I somehow spent one year in company but with getting more depressed day by day. And in between I said yes to my marriage but after that I am unable to leave job of thinking that I will be jobless in April when my marriage is scheduled .neither I am able to say no to marriage because its too late. I will ruin girl's life by saying no after engagement. I am stuck in this situation .I can not decide what to do now. I want to leave job and get a banking job as I think that will br more suitable to me because my engineering life will be struggle throughout my life. I said everything that was in my mind. Kindly help me plz.

Dr. Y K Mahendra 92% (90 ratings)
Ophthalmologist, Kanpur
I do not know from where to start. I am a 24 years old male. I am a mechanical engineering graduate of 2016 .While I ...
Your are suffering from three problem, 1. COLOUR BLINDING. 2. Masturbation. 3. Depression. Out of these three two are man made, i.e. In your hand stop Masturbation immediately and there is no need to be depressed. There are thousand and one job for colour blindness, but it depends on the degree of colour blindness for which need to be checked .Persons are unfit for Railway, Air jobs etc. But low degree colour blindness is not a big problem. So get it checked and do not worry, being a Engineer you may be fit for others jobs. However I can say it with certainly only after exaiming you.
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Corneal Ulcer - Can It Lead To Blindness?

Dr. Rajeev Gupta 87% (25 ratings)
MBBS, MS - Ophthalmology
Ophthalmologist, Ghaziabad
Corneal Ulcer - Can It Lead To Blindness?

Antrior most transparent layer of the eye is called cornea. It is an extremely useful layer for refraction and protection of eye. Any trauma, foreign body or chemical etc can invade the integrity of this layer and can be invaded by bacteria, fungus or virus, resulting in the corneal ulcer. Sometimes, due to hypoxia induced by contact lenses too can result in a corneal ulcer.

Depending on clinical presentation, a doctor diagnoses the cause of the ulcer and start the therapy. Since the transparency of cornea is very important, a doctor starts very intensive therapy. With repeated frequent checkups if a proper and intensive therapy is not given, the ulcer can progress and can cause collection of pus in the anterior chamber which if not attended properly, can cause the infection to travel into the interior of the eyeball (vitreous chamber) resulting in total blindness. The ulcer can become deeper and lead to perforation of the cornea, causing severe damage to the eye and may require removal of pus (evisceration) or total removal of the eye ball.

Generally, fungal ulcers are more dangerous and occur mostly in rainy season.

  • It is imperative that a case of corneal ulcer is diagnosed promptly and very intensive treatment proper treatment is given to save the disfigurement of the eye and total irreparable blindness.
  • At times we have not only to give topical drops but oral therapy has to be given. Injections in the eye have to be given. Culture sensitivity has to be done in severe cases to identify the causative organism.
  • In extremely severe cases, we have to perform, therapeutic keratoplasty.

Conclusion: Corneal Ulcer is a serious challenging problem with the potentiality to cause total and irreparable blindness and must be attended promptly by a very expert ophthalmologist to save the eye. In case you have a concern or query you can always consult an expert & get answers to your questions!

5437 people found this helpful

I am suffering from colour blindness Is there any solution available? Please suggest

Dr. Shreyas Shah 90% (122 ratings)
MBBS, DNB (Ophthalmology), ROP
Ophthalmologist, Coimbatore
I am suffering from colour blindness Is there any solution available? Please suggest
There is currently no treatment for inherited colour blindness. Colour filters or contact lenses can be used in some situations to enhance the brightness between some colours and these are occasionally used in the workplace, but many colour blind people find these actually confuse them further rather than help. To cure this color blindness would require some form of gene therapy, repairing the damaged chromosome. However even this is only research circumspection, there is no scientific method available at present that shows any signs of promise of a cure for color blindness. However a lot depends on which type of color blidness you have. There are various types and with an off a few test we can diagnosis the type which you have.
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Children With Special Needs - Ways You Can Manage Them!

Dr. Bhoomika Sachacher 87% (10 ratings)
Ph.D Clinical Psychology
Psychologist, Ranchi
Children With Special Needs - Ways You Can Manage Them!

Parenting is a lifetime job be it for a normal child or a child with special needs. Parents are teachers, guides, leaders, protectors and providers for their children. Parenting is a process of promoting and supporting the physical, emotional, social, financial and intellectual development of a child from infancy to adulthood. Every child is a gift and a blessing to their parents. On the other hand, parenting itself is one of the toughest jobs and that too for a child with special needs, it is both a blessing and challenge.

It is a very unique experience to live with a disabled child as it has a major impact on the family, siblings and extended family members. However, discovering a problem should be the initial step to start with parenting such children. Discovering a child's special needs is often a confusing and painful process for parents as sometimes learning difficulties can be multiple and difficult to pinpoint and it can be hard for parents to know whether things are normal or not.

There are various categories of disabilities that your child might fall under. For example: Specific Learning Disability (SLD), Other Health Impairment, Autism Spectrum Disorder, Emotional disturbance, Speech or language impairment, Visual impairment, including blindness, Deafness, Deaf-blindness, Orthopedic impairment, Intellectual disability, Traumatic brain injury, Multiple disabilities.

Some common indications for the development of learning disabilities which can be taken into consideration

  1. Difficulty with reading/writing
  2. Problems with math skills
  3. Difficulty in remembering
  4. Problem in paying attention
  5. Trouble following directions
  6. Difficulty with concepts related to time
  7. Problem in staying organized
  8. Impulsive behavior
  9. Inappropriate responses in school or social situations
  10. Difficulty staying on task(easily distracted)
  11. Difficulty finding the right way to say something
  12. Immature way of speaking
  13. Inconsistent school performance
  14. Difficulty listening well
  15. Problem in understanding words or concept

But the above mentioned signs are not enough to determine that a person has a learning disability. A professional assessment is also necessary to diagnose a learning disability because every disability has its own signs and unless they persist over time cannot be considered as a 'disability'. In case you have a concern or query you can always consult an expert & get answers to your questions!

2272 people found this helpful

All that you need to know about Night Blindness

Dr. Shalini Shetty 87% (38 ratings)
Fellowship of the Royal College of Surgeons (FRCS), MS - Ophthalmology
Ophthalmologist, Bangalore
All that you need to know about Night Blindness
The deficiency of Vitamin B is responsible for night blindness. True or False. Take this quiz to know now!
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I have weakness issue. Whenever I sit continuously at one place for some and try to stand up then I feel blindness. please help me.

Dr. Nash Kamdin 96% (3714 ratings)
General Physician, Mumbai
I have weakness issue. Whenever I sit continuously at one place for some and try to stand up then I feel blindness. p...
Dear Lybrateuser, - Your problem could be due to a sudden drop in blood pressure which can occur when standing up from sitting or lying down position - have plenty of oral fluids including 8-10 glasses of water per day - have a well balanced diet with mire if fruits & vegetables (also green leafy ones like spinach, kale, broccoli) - rise slowly from sitting position as suddenly getting up leads to sudden drop of BP leading to giddiness or improper vision - also get your BP checked by a doctor.
1 person found this helpful
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