Refractive error is a problem with focusing light accurately on the retina due to the shape of the eye and/or cornea. The most common types of refractive...

Astigmatism is a type of refractive error due to rotational asymmetry in the eye's refractive power. This results in distorted or blurred vision at any...

Refractive surgery is an optional eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact...

An eye that has too much or too little refractive power to focus light onto the retina has a refractive error. A myopic eye has too much power so light...

too long or less commonly the lens being too strong. It is a type of refractive error. Diagnosis is by the use of cycloplegics during eye examination. Tentative...

eye. In an eye exam, the term refraction is the determination of the ideal correction of refractive error. Refractive error is an optical abnormality in...

wavelengths. Refraction occurs when light goes through a water surface since water has a refractive index of 1.33 and air has a refractive index of about...

lenses are designed to improve vision, most commonly by correcting refractive error. This is done by directly focusing light so it enters the eye with...

It is a type of refractive error. Diagnosis is based on an eye exam. Management can occur with eyeglasses, contact lenses, or refractive corneal surgeries...

automated refractor is a computer-controlled machine used during an eye examination to provide an objective measurement of a person's refractive error and prescription...

contains different lenses used for refraction of the eye during sight testing, to measure an individual's refractive error and determine their eyeglass prescription...

Retinoscopy is a technique to obtain an objective measurement of the refractive error of a patient's eyes. The examiner uses a retinoscope to shine light...

impairment globally are uncorrected refractive errors (43%), cataracts (33%), and glaucoma (2%). Refractive errors include near-sightedness, far-sightedness...

chart with the use of the pinhole, this indicates the presence of refractive error. This is based on the principle that the pinhole blocks out any peripheral...

low visual acuity is refractive error (ametropia): errors in how the light is refracted in the eye. Causes of refractive errors include aberrations in...

confusion on the retina and increases depth of field. In eyes with refractive error, the result is often a sharper image. However, a second effect may...

type and severity of the strabismus. Refractive amblyopia may result from anisometropia (unequal refractive error between the two eyes). Anisometropia...

represent advances over radial keratotomy in the surgical treatment of refractive errors of vision. For people with moderate to high myopia or thin corneas...

Refractive surgery). A determination of the prevalence of anisometropia has several difficulties. First of all, the measurement of refractive error may...

Retrieved 2018-01-24. "LASIK Alternatives | UCLA Laser Refractive Center". UCLA Laser Refractive Center. Retrieved 2018-01-29. Zhao, LQ; Zhu, H; Li, LM...

with eyeglasses, contact lenses, or refractive surgery. Various considerations involving ocular health, refractive status, and lifestyle frequently determine...

hypoglycemia, or low blood pressure. Other medical conditions may include refractive errors such as myopia, high hypermetropia, and astigmatism, amblyopia, presbyopia...

children with anisometropic amblyopia, a balancing of the refractive error eyes via refractive surgery has been performed before strabismus surgery was...

amblyopia. Treatment options for esotropia include glasses to correct refractive errors (see accommodative esotropia below), the use of prisms, orthoptic...

eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles"...

gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia, hyperopia, and astigmatism. Doctors discovered the...

a ray crossing the interface between two media with refractive indices n1 and n2. The refractive indices also determine the amount of light that is reflected...

Eye neoplasm Glaucoma Hypertensive retinopathy Macular degeneration Refractive error (including astigmatism) Strabismus Uveitis Following are examples of...

Ignacio Barraquer: The Father of Refractive Surgery". CRSTG | Europe Edition. Retrieved 2023-10-28. "Types of Refractive Errors | National Eye Institute". www...

firstly selected and the patient's details are entered, including their refractive error. The analyser will provide a lens strength and type (either spherical...