hyperopic การใช้

• A hyperopic model ICL ( posterior chamber PIOL ) is available.
• The absence of this lens left the patient highly hyperopic ( farsighted ) in that eye.
• Pseudopapilledema sometimes occurs in hyperopic individuals.
• The chances of an esotropia developing in a hyperopic child will depend to some degree on the amount of hyperopia present.
• Junko is a Wallop, a species of hyperopic, and requires eyeglasses to read, as seen in " Storm Warning ".
• Optic disc edema, globe flattening, choroidal folds, hyperopic shifts and an increased intracranial pressure have been documented in these astronauts.
• Some study show that combining LASIK with cross-linking adds refractive stability to hyperopic treatments and may also do the same for very high myopic treatments.
• Vergence control, and over-convergence associated with the extra accommodation required to overcome a hyperopic refractive error, play a role in the onset of accommodative esotropia.
• In such cases an additional hyperopic correction is often prescribed in the form of bifocal lenses, to reduce the degree of accommodation, and hence convergence, being exerted.
• Thus, in such cases, even when all underlying hyperopic refractive errors have been corrected, the child will continue to squint when looking at very small objects or reading small print.
• In hyperopic children, yet more factors are to be considered : Hypertropia is known to be a significant risk factor for esotropia, therefore undercorrection may have the side effect of increasing this risk.
• Where the esotropia is solely a consequence of uncorrected hyperopic refractive error, providing the child with the correct glasses and ensuring that these are worn all the time, is often enough to control the deviation.
• The idea behind HK was to make six peripheral incisions forming a hexagon around the central cornea to steepen the hyperopic flat cornea and, thereby, focus the rays of light more precisely onto the retina.
• This case is interesting because the astronaut did not have disc edema or choroidal folds, but was documented to have nerve fiber layer ( NFL ) thickening, globe flattening, a hyperopic shift and subjective complaints of loss of near vision.
• Several mechanisms may explain the increase in the amount of higher-order aberrations with conventional eximer laser refractive procedures : a change in corneal shape toward oblateness or prolateness ( after myopic and hyperopic ablations respectively ), insufficient optical zone size and imperfect centration.
• This astronaut had the most pronounced optic-disc edema of all astronauts reported to date, but had no choroidal folds, globe flattening or hyperopic shift . At 10 days post landing, an MRI of the brain and eyes was normal, but there appeared to be a mild increase in CSF signal around the right optic nerve.