Word Finder - myopia

definition

A disorder of the vision where distant objects appear blurred because the eye focuses their images in front of the retina instead of on it.

synonyms

• nearsightedness
• shortsightedness

definition

A lack of imagination, discernment or long-range perspective in thinking or planning.

Concave Lenses are used in the treatment of myopia or shortsight.

Laser surgery has been used successfully to treat myopia in adults.

The brushing over of this fact is yet another example of historical myopia.

Patients with high myopia, greater than 6.00 diopters, have an increased risk of developing a retinal tear, hole, or detachment; a posterior staphyloma; a posterior vitreous detachment; or glaucoma.

Perceived nearness of screen The fact that the subject ' knows ' that the visual target is close leads to instrument myopia.

Around 5 million people in the UK are short-sighted and of these, about 200,000 have what's called high-degree myopia.

In addition, a certain segment of the population suffers from "night myopia," when lack of light can cause difficulty in focusing on distant objects.

Have a complete eye examination so that your ophthalmologist or optometrist can rule out cataracts or night myopia.

If you have night myopia, your eye care practitioner can recommend the proper prescription lenses to correct your night vision and make night driving safer for you.

If you suffer from myopia, astigmatism, presbyopia, or some other form of refractive eye disorders, then a pinhole style of eyeglass might be right for you.

The purpose of eyeglasses and contact lenses is to correct or improve the vision of people with nearsightedness (myopia), farsightedness (hyperopia), presbyopia, and astigmatism.

Myopia, or nearsightedness, is a condition in which objects in the distance are blurred either because the eye is too long or too strong.

There are several types of myopia, of which simple myopia is the most common.

Individuals with simple myopia have eyes that are either too long or too powerful.

Individuals with high myopia, greater than six diopters, can develop pathological changes in the retina, called degenerative myopia.

Nocturnal myopia, another type of myopia sometimes referred to as "night blindness," is blurred vision only in darkness.

Myopia can also be induced by co-existing medical problems and drug exposure.

Myopia is less likely to develop by age 13 if a child still has at least 0.75 diopters of hyperopia at age eight.

Myopia is often observed in retinopathy of prematurity (ROP).

The myopia associated with ROP increases through age five, after which it stabilizes.

Although no gene for myopia has been isolated, heredity is believed to play a role in myopia.

This drops to at most 40 percent when only one parent is nearsighted, and for 15 percent of myopic children, neither parent has myopia.

High myopia is especially likely to have a genetic component.

Myopia is slightly more prevalent among females than males, and among those with advanced academic training.

Myopia is more prevalent in Asian countries; as much as 70 percent of the Chinese population is nearsighted.

Congenital myopia develops because of an obstruction along the visual pathway such as cataract.

A first sign that a child might have myopia is difficulty in seeing things in the distance, such as the chalkboard.

This stretching can continue into adulthood, increasing myopia.

Doing a lot of close work, such as playing video games and using the computer for extended periods, may increase myopia for these children.

Causes of induced myopia include cataracts and elevations of blood sugar in diagnosed or undiagnosed diabetics.

Another cause of increasing myopia is the over wearing of contact lenses.

Swelling of the cornea can occur if the eye does not have sufficient oxygen causing a transient increase in myopia.

In the early 2000s, it has been suggested that insulin resistance, which accompanies type 2 diabetes and prediabetes, may increase myopia in children and adolescents.

Thus, if insulin levels are higher than normal, the risk of myopia may be increased.

Asthenopia or a feeling of eye strain is not common in myopia.

Myopia is the most common cause of distance blur, and since much of what a child learns comes from vision and visual cues, correction of myopia is important.

Myopia is diagnosed by determining a child's unaided vision and is confirmed objectively by the eye care practitioner with various techniques, including retinoscopy and refraction.

Dilation of the eye allows the doctor to check for complications of ROP, diabetes, or degenerative myopia.

Myopia is most commonly treated with spectacles or glasses.

Once a child is diagnosed with myopia, he or she should be examined every six months to a year, and each eye should be corrected to 20/20 at each visit.

Peripheral vision is improved with contact lenses, especially for those with high degrees of myopia or who have anisometropia.

Rigid gas permeable (RGPs) contact lenses are used to correct myopia.

The rate at which myopia increases may be slowed by RGP lenses.

These lenses, called ortho-K lenses, flatten the cornea, changing the power of the cornea over time and decreasing myopia.

This effect of ortho-K lenses is not permanent and an ortho-K lens must be worn periodically or the original myopia reappears.

For some children the development of myopia may be slowed with reading glasses or bifocals.

Refractive surgery is also used to correct myopia, but only on fully grown individuals.

The most common surgical procedure performed to correct myopia is laser in situ keratomileusis (LASIK).

Other techniques to correct myopia include photorefractive keratectomy (PRK), radial keratomy (RK), laser epithelial keratomileusis (LASEK), intraocular lens implants and intrastromal corneal rings.

Cycloplegic drugs, such as atropine, may decrease myopia, but they may hinder the child's ability to see up close.