It is thought that the decrease in contrast sensitivity as refraction moves toward hypermetropia
may explain why hypermetropes are more prone to amblyopia than myopes.
23) observed that in participants > 15 years of age, myopia and hypermetropia
increased with increasing age, a significant rising trend of ocular infection with increase in age was reported in study by Kumar R et al.
5 In biology, hypermetropia
is more commonly known as long- or short-sightedness?
Therefore, a study determines their anatomical pattern so that they serve as a model for comparison with eyes that have refractive defects (myopia, hypermetropia
and stigmatism) pathological eyes (such as those that have cataracts).
Testing for hypermetropia
in the school vision screening programme.
Long sight Also known as hypermetropia
, this occurs when the power of the eye is too weak or the eyeball is too short.
It is the oldest and the most popular method in the world for the correction of spectacle powers (refractive errors): myopia, also called shortsightedness or nearsightedness; hypermetropia
also called or longsightedness or farsightedness and astigmatism, for those using cylindrical correction in their glasses.
131 (a) Poor vision includes such conditions as myopia, hypermetropia
, astigmatism, and anopsia.
Also, children with severe hypermetropia
(long-sightedness) may be unable to sustain the accommodative effort for a clear image, and the lack of accommodative effort produces a blurred image and manifest divergent squint (Simon et al 2005-6).
The asociaton of Fuch's corneal endo-thelial dystrophy with axial hypermetropia
, shallow anterior chamber and closure glaucoma.
It is estimated that more than half of the Greek population, that is to say more than 5 million, are in need of eye correction, while almost all people after the age of 40 have long-sightedness problems as well as hypermetropia
Two major types of refractive errors are myopia and hypermetropia
However, the presentation of astigmatism was 65%, hypermetropia
25% and myopia 10%, which is similar to the Nepalese study.
Exclusion criteria included: hypermetropia
or myopia greater than 4 diopters (D); corneal astigmatism greater than 2.
3] In myopia, with accommodation at rest parallel rays coming from infinity are focused in front of retina while in hypermetropia
, the rays are focused behind the retina.