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hyperopia
A new relaxing-incision surgical procedure was used for the correction of presbyopia and/or hyperopia.
      
In the second part, subjects with normal vision were examined under simulated visual conditions, e.g., hyperopia (3.0 D), reduced visual acuity (VA?=?20/200), yoke prisms (4?cm/m) and pursuits (pendulum).
      
A loss of stability was measured for simulated hyperopia, pendulum and yoke prisms base down.
      
An abnormally small, shrunken choroidal blush can be seen with microphthalmia, extreme degrees of hyperopia, and in the phthisical eye.
      
Moderate hyperopia (8-13 dioptres) exists in water.
      
The chromatic aberration measured in these species is insufficient to account for the hyperopia found underwater.
      
The maximum reduction of hyperopia resulting from a monochromatic (blue, blue-green) aquatic habitat would only amount to two dioptres.
      
It is speculated that the remaining hyperopia is nullified by an accommodative mechanism.
      
The squid eye is well corrected optically underwater although a tendency toward hyperopia exists.
      
The hyperopia of hatchling chicks (+6.5+4.0 D) initially decreases rapidly and then more gradually to + 2.0 ± 0.5 D by 16 days.
      
The influence of globe prominence on the electro-oculogram potential level was measured in patients with unilateral protrusio bulbi, myopia or hyperopia.
      
If the accommodative capacity of a patient is impaired whose hyperopia is not fully corrected, the ability to drive in modern traffic may be impaired.
      
The appearance of the retinal nerve fiber layer was studied in one eye of 203 normal Asians (59 with high myopia ≥ - 5 D, and 144 with emmetropia or hyperopia).
      
The occurrence of a defect (nerve fiber loss) in the retinal nerve fiber layer in severe myopia (5/59, 8%) was also greater than that in either emmetropia or hyperopia (2/144, 1 %; P= 0.0229).
      
The eye study revealed significant hyperopia (? + 2.0) in 22.4%, myopia (≥ - 1.0 D) in 8.6%, astigmatism (≥ 1.0 D) in 12.1 %, and anisometropia (≥ 1.0 D) in 12.1 %.
      
In the randomly selected full-term children of the same age, significant hyperopia was seen in 14.3%, astigmatism in 5.4% and strabismus in 1.8%.
      
? Conclusion: The optic disc morphology in primary open-angle glaucoma differs significantly between highly myopic eyes and eyes with hyperopia or low to moderate myopia.
      
Hyperopia correction by noncontact holmium: YAG laser thermal keratoplasty: five-pulse treatments with 1-year follow-up
      
? Background: Previous noncontact holmium (Ho): YAG laser thermal keratoplasty (LTK) studies on correction of low to moderate hyperopia have used treatment algorithms based on ten-pulse, variable-pulse-energy treatment parameters.
      
? Conclusion: This clinical study indicates that five-pulse noncontact LTK treatments of low hyperopia are safe and effective.
      
 

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