What is the meaning of anisometropia?
What is Anisometropia? Anisometropia means that the two eyes have a different refractive power (glasses prescription), so there is unequal focus between the two eyes.
What are the types of anisometropia?
There are three types of anisometropia: simple anisometropia (happens when only one eye has a refractive error), compound anisometropia (happens when both eyes are farsighted and nearsighted) and mixed anisometropia (when both eyes have refractive errors but one is nearsighted and the other is farsighted).
What is the difference between anisometropia and astigmatism?
Anisometropia is defined as the absolute interocular difference in spherical equivalent refractive error (SER, sphere + ½ cylinder). Aniso-astigmatism is defined as the absolute interocular difference in refractive astigmatism.
How do you treat anisometropia?
Anisometropia can be treated in a number of ways. Corrective lenses are commonly used, but they only work for those with a difference of less than 4D between their eyes….Treatment for Anisometropia
- Refractive corneal surgery.
- Removal of the crystalline lens.
- Intraocular lens implantation.
- Phakic IOL.
What do you do for anisometropia?
Treatment for anisometropia primarily involves correcting the refractive difference between the eyes. This is often done with a pair of eyeglasses. Due to the risk of amblyopia, it is not uncommon for an eye doctor to prescribe a pair of lenses and then see the patient back in one or two months for a re-evaluation.
What is the cause of anisometropia?
Causes. Anisometropia is caused by common refractive errors, such as astigmatism, far-sightedness, and myopia, in one eye. Anisometropia is likely the result of both genetic and environmental influences. Some studies suggest, in older adults, developing asymmetric cataracts may cause worsen anisometropia.
How do you identify anisometropia?
Anisometropia may initially be detected by comparison of the red reflex between the 2 eyes (Brückner test). The affected eye has the duller red reflex. Early detection and treatment of anisometropia are essential for the development of optimal visual function.
What are the symptoms of anisometropia?
Anisometropia is the condition in which the two eyes have unequal refractive (glasses) power….Signs and Symptoms of Anisometropia
- Eyestrain.
- Poor depth perception.
- Headaches.
- Nausea.
- Light sensitivity.
- Tiredness.
- Dizziness.
Which test is used in anisometropia?
[7,8] One relatively simple option involves the Bruckner test, performed by using the direct ophthalmoscope to obtain a red reflex simultaneously in both eyes, to detect strabismus and moderate to severe anisometropia.