Refractive Error

Refractive errors are vision problems caused when the irregular shape of the cornea results in problems with the light focusing on the retina. The different types of refractive errors are myopia (nearsightedness), hyperopia (farsightedness), astigmatism, and presbyopia. Refractive errors can be corrected by using eyeglasses, contact lenses, and refractive surgery.

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All the answers published in this website are written by Verified medical doctors, therapists and health experts. The Content has been moderated by iCliniq medical review team before publication. Post your medical clarifications on iCliniq by choosing the right specialty and get them answered. Your medical queries will be answered 24/7 by top doctors from iCliniq.

How is a sudden vision disturbance in the lazy eye treated?

Query: Hi doctor, I have a congenital left lazy eye, which wanders outwards and upwards. This is managed by prism glasses, currently 7 base vertically and 2 horizontally. I am managing my eye strain and daily life well in general. I do however have occasional episodes, which are not manageable. Sometimes, ...  Read Full »


Dr. Vaibhev Mittal

Eye Care Ophthalmologist

Answer: Hello, Welcome to icliniq.com. Lazy eye is not congenital. It is acquired due to the presence of anisometropia (difference in the refractive status of both eyes) or due to squint or due to congenital cataract or ptosis, etc. Sometimes, lazy eye tends to move out to lead to squint and for that prism ...  Read Full »

How to recover my eyesight?

Query: Hello doctor,I have a problem with my left eye called astigmatism. My vision without glass is 1/10 and with glass it is just 3/10.  Read Full »


Dr. Asif Manzoor

Eye Care Ophthalmologist

Answer: Hello, Welcome to icliniq.com. Please send me your investigation report and other relevant details to comment further.Revert back with the reports to an eye care ophthalmologist online --> https://www.icliniq.com/ask-a-doctor-online/eye-care-ophthalmologist  Read Full »

What can cause blurry image, itchy eyes, and headache?

Query: Hi doctor,I have been having lots of trouble with my eyes lately. Reading glasses are not helping me. Everything has begun to get blurred. I have noticed that I have been rubbing my eyes a lot and I have been getting headaches. Please help.  Read Full »


Dr. Asif Manzoor

Eye Care Ophthalmologist

Answer: Hi, Welcome to icliniq.com. Actually, there are many causes of decreased vision and itching for which you need to rub your eyes. Please answer a few questions. Since how long you are using glasses? When you had your last refraction? Do you have any eye allergy, itching, watering or redness that get...  Read Full »

Why do I have headaches even after having a normal vision and good sleep?

Query: Hi doctor, I am suffering from throbbing, dull pain in my left eye, which is shooting down to the left nostril. I feel pressure when I bend forward and also some discharge from the nose with a salty taste. I am getting the pain while watching television and when working in the computer. I am having ...  Read Full »


Dr. Naresh Kumar Monigari

General Medicine Physician, Internal Medicine Physician

Answer: Hello, Welcome to icliniq.com. I had gone through all the details that you have posted. The differential diagnosis for your problem would be as follows. First is frontal sinusitis, as you have told there is pain when you press above left eye. Normally, frontal sinus drains into the nasal cavity in ...  Read Full »

Will high refractive error in eye cause persistent eye floaters?

Query: Hello doctor, I am having persistent floats on the lower side of the eye. I have consulted a doctor and since the eye power is the same (-4.5) she did not dilate the eye. She told me it is because of the sore eyes and it will get resolved. But I want to be sure, as the floats are more severely occ...  Read Full »


Dr. Pooja Pandya

Eye Care Ophthalmologist

Answer: Hello, Welcome to icliniq.com. See first of all floaters at the age of 21 is not a common condition. It can be due to so many reasons but I feel in your case it is because of your high refractive error that is -4.5 as you said. So my advice is you should be very careful regarding your symptoms if...  Read Full »

What is the normal refractive error numbers of 1-year-old?

Query: Hello doctor, My child is one year old. On routine examination his eye has a power of minus 3.5 and minus 2.5 refractive error. What is the normal refractive error at this age as refraction continues to change? Doctor said to follow up after six months as glasses may be needed if power increases....  Read Full »


Dr. Hussein Ayoub

Eye Care Ophthalmologist

Answer: Hello, Welcome to icliniq.com. First of all, let me tell you that visual development takes until the age of puberty. As your child grows, his vision parameters will change because his eyeball grows with him as he ages. So visual stability will continue to change until the age of 18-20 years old. ...  Read Full »

Is it a must to wear glasses all the time for cylindrical power of -0.5 and -1.25?

Query: I have cylinder power,from past 10 months-first my power was 0.5 in right and 0.75 in left but now I have in my right eye is -0.5,axis is 180 and in left eye -1.25,axis is 180..Do I need to wear glasses all the time?Can I wear lenses for this power?and also can I go for lasik surgery?please reply..a...  Read Full »


Dr. Asif Manzoor

Eye Care Ophthalmologist

Answer: Hi. Welcome to Icliniq. I will try to answer all your questions one by one. So first of all cylinderical change from -0.75 to -1.25 is not significant and most probably it was due to interobserver variation. Usually refractive error does not change after 20-22 years age and as you are 27 so less ch...  Read Full »

What can cause sudden blurred vision?

Query: Hello doctor, I am 26 years old. I have never had any problems with my eyes. I had a perfect vision. But, from yesterday morning I feel blurred vision in my right eye. I am an informatician, so I am in front of a screen every day for almost 10-15 years and I do not have pain in my eyes when I use...  Read Full »


Dr. Dada Peer K

Eye Care Ophthalmologist

Answer: Hello, Welcome to icliniq.com. I reviewed your history. These symptoms indicate dryness of eyes. Symptomatic relief can be obtained by use of artificial tear eye drops. I would suggest to use artificial eye drops like Refresh tears (Carboxymethylcellulose Sodium) one drop 2-3 times a ...  Read Full »

What causes floaters in the eye?

Query: Hi doctor, I am a male, recently 20 years of age. About a year ago I started noticing something weird with my left peripheral vision, although I could not put my finger on it. It was more like a weird sensation. I had just moved to another country at the time, so I can imagine I was quite stressed...  Read Full »


Dr. Suresh Kumar G D

Child Health Specialist, Paediatrician, Psychiatrist

Answer: Hello, Welcome to icliniq.com. Floaters are fairly common in the population. They are more common in people having refractive errors like myopia, astigmatism, etc. Since you are having flashes along with floaters, it is good to have a fundus examination of your eyes. I note that you have seen an o...  Read Full »

Can blepharitis cause headaches?

Query: Hi doctor, My 9 year old son has had a frontal headache for over a month. We discovered that he has muscle knots and blepharitis. Can blepharitis lead to headache?  Read Full »


Dr. Pooja Bandivadekar

Eye Care Ophthalmologist

Answer: Hi, Welcome to icliniq.com. Blepharitis can rarely cause headache. Blepharitis usually indicates a low grade infection of the hair root and surrounding sebaceous glands. I guess the muscle knots on the eyelid you are referring to is chalazion or stye. Both, blepharitis and chalazion occur when child...  Read Full »

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