The Prevalence Of Refractive Errors In Children

Myopia - is the refractive condition where the farthest point of focus is located at a point near to the observer, and not at infinity. When one is nearsighted, distance vision is blurred at all times while near vision is often excellent within a certain range. There are a number of explanations for this optical condition. The eyeball may be too long, causing the image to be focused short of the retina at the back of the eye. Or, the focusing lenses of the eye are too strong.

Since myopia is when the eye’s depth is longer than usual, the focal lenth is shorter. When the focal length is shorter, the image is formed in front of the retina and what the person sees is a blurry image as shown in the top

Amblyopia is a condition in which visual acuity in one eye is greatly reduced. It is caused by lack of stimulation or disuse during visual development (Rose, 1998). Because the eye is not fully developed at birth (Jarvis, 1992, as cited in Rose, 1998), infants need stimulation to complete the visual neural pathway. When one or both eyes are inhibited, for example due to misalignment of one eye (strabismus) or a large difference in refractive power between two eyes (anisometropia), the neural pathway for the inhibited eye develops abnormally, or does not develop at all. At

Congenital Cataract is one of the leading preventable diseases that causes blindness around the world, being one of the easiest diseases to treat, the major complication being that some countries do not have the sufficient resources to treat it. The disease is formed in the eye and forms a sort of cloud in the natural lens of the eye that could eventually lead to blindness if not treated properly. This type of cataract is different from most cataracts, since congenital cataracts is present in an individual since birth, meaning that it was most likely inherited from the parents. The way that it is inherited is by some sort of abnormality, which would transpire during the making of the proteins that make the lens clear. There are many different

According to a study of 14213 participants, estimated half of the US population 20 years and older has some type of clinically important refractive error and the annual direct cost of providing refractive correction to the 100 million people who need it to achieve good vision as exceeding $3.5 billion (not including the costs of identifying those who need refractive correction). Besides its high prevalence, refractive errors also cause essential problems to the patient’s daily activities, such as driving, reading, and writing.

Surgical treatment has been proven to improve the visual acuity (Reacher et al., 1992), but its effectiveness on cornea opacity

Among the wide variety of refractive surgical procedures available for correction of post-keratoplasty refractive errors, the choice is tailored according to patient, ocular and economic factors. Patient's age and occupational demands should be considered during counseling. Cost-effectiveness and technology availability can affect the decision. However, the ocular condition remains the most influential factor in the choice of the best option (Alio et al., 2015).

Refractive disorders such as nearsightedness and farsightedness are the most common eye problems in the United States. Though, despite their prevalence, there remains much confusion regarding the differences between these two conditions. Below, an optometrist from Progressive Vision Group PA in High Point, NC seeks to bring these issues into focus.

If you are suffering from refractive errors in your eyes and are planning to undergo corrective surgery, it is always better if you make an informed decision. The most commonly used corrective surgery for the refractive errors of the eyes is the Chicago Lasik. Though it is considered to be a very safe corrective procedure, still as in any other surgery there could be a chance of developing complications. There is a very low percentage of patients who may develop complications post surgery.

It is estimated over 285 million people worldwide are visually impaired with one of the major causes being cataract at 33% (figure 1A)(Pascolini & Mariotti, 2012). Cataract is considered to be the leading cause of blindness (51%) in the world (figure 1B) (Pascolini & Mariotti, 2012). (ref 1) According to Khanna, Lindfield, Ngounou, and Vishwanath (2012), 90% of cataract blindness occurs in low and middle income countries.

Before contact lenses finally became popular in the 50’s, eyeglasses had been the only practical way to correct refraction vision errors. Now however, there are several modern ways when it comes to correcting vision problems including corrective eye surgery. Corrective eye surgery ranges from laser reshaping of the eye surface known as LASIK and PRK to a surgically inserted artificial lens that corrects the eyesight. Within LASIK and other such similar procedures, laser energy reshapes the curvature of the eye’s clear front surface known as the cornea and alters the way that light rays will enter your eye. This isn’t too different from artificial lenses, which once surgically inserted into the eye, can

Most of patients are hoping to see well without spectacle or contact lenses. So in last years the refractive surgery increased in patients dissatisfied with spectacles and contact lenses either due to quality of vision, cosmetic appearance or difficulties in contact lenses wearing and its complications. corneal surgeries like corneal ablation ( photorefractive keratectomy (PRK) and laser-assisted in situ keratomileusis LASIK) and different types of phakic intraocular lens (PIOL) implantation either in the anterior or posterior chamber and the anterior chamber either iris claw or angle fixation IOL aim to correct s refractive errors in myopic patients [1,2].

Vision challenge or impairment is when a person’s degree of seeing is very low and the affected person requires assistance in order to carry out daily routine. Significantly, for one to qualify as visually impaired there must be prove that a person cannot undertake duties by himself without necessary assistance. For a person to qualify as a visually challenged, there must be a prove that the affected eyes cannot be conventionally treated. Visual challenge cannot be corrected by surgery, refractive measures neither by medication and that is why it is termed as visual impairment. The most rampart causes of visual challenge are trauma, degenerative or congenital means and a variety of diseases. In the society,

Seeing a group of Asian people are unaware of protect the eyes and using defective glasses daily. Monterey Vision Centre’s mission is to provide quality eyewear as well as to educate its customers prevent eye diseases by electing, carrying

I looked into the physics of the eye itself and into corrective lenses because I wear glasses. The human eye is a very complex piece of anatomy. Like a camera, the eye is able to refract light and produce an image that can enable someone to see.