What's the difference between myopia and nearsightedness?
Myopia
Definition:
(n.) Nearsightedness; shortsightedness; a condition of the eye in which the rays from distant object are brought to a focus before they reach the retina, and hence form an indistinct image; while the rays from very near objects are normally converged so as to produce a distinct image. It is corrected by the use of a concave lens.
Example Sentences:
(1) In the group of high myopia (over 20 D), the mean correction was 13.4 D. In the group with refraction between 0 and 6 D, 88% of the eyes treated had attained a correction between -1 and +1 D 3 months postoperatively.
(2) The third patient was using an extended-wear soft contact lens for correction of residual myopia.
(3) The yield of such studies may be high for an understanding of such diseases as myopia, retinal detachment, and keratoconus.
(4) Myopia ranged from -1.0 D to -9.0 D. Forty-two eyes (53%) achieved uncorrected visual acuity (VA) of 1.0 or better and 73 eyes (92%) better than 0.5.
(5) A 69-year-old patient with high myopia was treated with retrobulbar steroid injections.
(6) We have reported the development of 1.6 diopters of myopia in a group of patients exposed to reptitive oxygen breathing at two atmospheres absolute pressure.
(7) The X-chromosomal form is frequently associated with myopia.
(8) The progress of 108 children who were identified by the vision screening programme in school as having defective vision (excluding those with puberty onset myopia) was reviewed.
(9) Extraordinarily wide angles were observed in all cases and myopia was a common refractive error.
(10) The Houston Myopia Control Study is a 3-year randomized clinical trial in which each of 213 myopic children was placed in either a single vision (standard treatment) group, a +1.00 D add treatment group, or a +2.00 D add treatment group, on the basis of a randomized procedure.
(11) The term "instrument myopia" means an accommodative effort caused by the view into the microscope.
(12) During the first month the mean myopia gradually increased to 0.12 D more myopia and increased linearly to 0.50 D more myopia at 3 months.
(13) Expansion was not related to laser wavelength, patient age, SRNV size, or degree of myopia.
(14) Young adulthood myopia progression also appeared to be accompanied by a slight tendency toward a with-the-rule astigmatic shift.
(15) This association is comparable with subretinal neovascularization in high myopia, angioid streaks, choroiditis and choroidal ruptures.
(16) After prophylactic scleroplasty for high complicated myopia the patient developed bilateral detachment of the retina.
(17) The implications of these findings are discussed with regard to both current models of accommodation-vergence interaction and the etiology of late-onset myopia.
(18) To improve scleroplasty efficacy in children at a high risk of postoperative progress of myopia the authors have developed a new surgical method involving increase of the transplant size and its preoperative treatment with a foamy composition intended for filling the body cavities.
(19) In the present study, close ophthalmologic examinations were performed on 11 patients with FCMD, and we found myopia, weakness of the orbicularis oculi, congenital nystagmus, cortical blindness, optic atrophy, chorioretinal degeneration, etc.
(20) If the high myopias and cone dysfunction are considered to be parts of the same syndrome, the heredity could be x-chromosomal recessive or autosomal recessive.
Nearsightedness
Definition:
(n.) See Myopic, and Myopia.
Example Sentences:
(1) It should include a cycloplegic refraction to tule out excessive farsightedness, nearsightedness, astigmatism, or unequal refraction in the two eyes.
(2) Comparison of tests administered to the same students 10 years earlier suggests that the intellectual gain precedes the development of nearsightedness.
(3) When treating nearsightedness with radial keratotomy, that is, by causing lesions with a diamond-knife, the individual results are quite difficult to predict reliably.
(4) However, comparison with other instruments for examining near heterophoria justifies the conclusion that heterophoria or nearsightedness due to errors of refraction can be determined more easily with this instrument and hence treated more appropriately.
(5) Many investigations have been carried out during the last 150 years to detect factors which cause nearsightedness (myopia).
(6) The procedures involve reshaping the cornea to compensate for the optical anomalies of astigmatism and nearsightedness.
(7) Data are presented on the family distribution of nearsightedness, including the frequency of the disorder in the children of two myopes.
(8) This study examines the relationship of subjective glare to refraction and visual acuity, respectively, 1 year after surgery in 435 patients who underwent radial keratotomy for nearsightedness in the Prospective Evaluation of Radial Keratotomy (PERK) study.
(9) The intellectual gain precedes in time the development of nearsightedness.
(10) Young children with surgically removed lenses and extreme nearsightedness can benefit from contact lenses, but their parents may need instruction to teach their children to accept lenses.