Sties and Chalazia: Differences and Similarities

styeWhat are sties?

Sties are one of the eye diseases that cause a warm, red bump on the eyelid. Most sties emerge along the border of the eyelid. When a sty arises within the eyelid, it is known as an internal hordeolum.

What are Chalazia?

Chalazia are lumps formed within the eyelid. Though they may resemble sties, usually they are larger than sties and they may not cause harm.

Similarities between Sties and Chalazia

Sties and Chalazia are sudden-start localized bumps of the eyelid.  Read More

Strabismus and Amblyopia: Differences and Similarities

young doctorAmblyopia is a condition in which there is poor vision in the eye which did not develop normal sight during early childhood. This condition is commonly known as lazy eye. It is normal for only one eye to be affected but it can happen to both eyes.

Causes

Amblyopia can be caused by strabismus or squint eyes. It is an imbalance in the positioning of the two eyes. The eyes can cross in (esotropia) or turn out (exotropia). The child uses only the better eye for vision as the crossed eye turns off to avoid “double vision” and resulting in the crossed eye failing to develop good vision.

Unequal focus can cause amblyopia. Unequal focus is a condition where one eye is more nearsighted or farsighted than the other eye. This can be corrected by the wearing spectacles.

Cataract may lead to poor vision. Cataract is a disease there is clouding of the clear lens in the eye. Treatment is necessary to remove the cataract. Read More

When to Check for Inheritable Eye Diseases

mother and daughterAccording to the World Health Organization (WHO), there are many genetic eye diseases that that are fairly common across the populations in the world. These diseases are transmitted from the parents to their children. It is encouraging to note that not all genetic eye diseases lead to blindness. Although, these diseases have been around for many years, there is still a lot of research needed to find out how to treat them with success. The good news is that over the past twenty years, there has been a lot of progress in the knowledge regarding genetic eye diseases. However, WHO admits that there are no concrete global statistics about the problem, although estimates indicate that about 60% of the cases of blindness in children are caused by genetic eye diseases.

Some of the conditions present at birth include retinal degeneration, congenital glaucoma, cataracts, eye malformations and optic atrophy. It has also been observed that up to 40% of the cases of ocular misalignment can be traced back to a family history of the condition. Doctors have been working extremely hard to identify the inherited gene that is responsible for this condition. Read More

Astigmatism: Causes and Treatments

astigmatismAstigmatism is a common eye disorder that normally results in blurred vision. A person’s cornea is usually spherical in shape. Understanding how it works is important to understand the effects of astigmatism. When light enters the cornea, it is reflected in all directions, thereby causing a focused image to be formed on the retina. However, when one suffers from astigmatism, the shape of the cornea tends to be distorted, and, as a result, it becomes difficult to form sharp and focused images, hence the blurred vision. A closer look at astigmatism: causes and treatment will help you understand the condition further.  Read More