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- Progressive adult antimetropia. [JOURNAL ARTICLE]
- Clin Exp Optom 2014 Jan 20.
Antimetropia, a sub-classification of anisometropia, is a rare refractive condition in which one eye is myopic and the fellow eye is hyperopic. This case report describes the ocular characteristics and atypical refractive progression in an adult male with a moderate degree of non-amblyopic antimetropia over a 20-year period. The potential mechanisms underlying unilateral axial elongation, anisometropia and myopia progression in adulthood are discussed.
- Effectiveness of laser in situ keratomileusis with the Nidek EC-5000 excimer laser for pediatric correction of spherical anisometropia. [Journal Article]
- J Refract Surg 2001 Mar-Apr; 17(2 Suppl):S224-8.
To determine the effectiveness of laser in situ keratomileusis (LASIK) for correction of spherical anisometropia in patients under 18 years of age.Thirty-eight patients (58 eyes) with myopic spherical anisometropia and spherical antimetropia were treated. Group 1 included 31 eyes of 20 children (9 to 15 yr) and Group 2 included 27 eyes of 18 children under 18 years old (16 to 17 yr). The difference in refraction between the two eyes in Group 1 was an average 5.95 D and in Group 2, 6.92 D. The operations were performed with the Nidek EC-5000 eximer laser and the Hansatome Chiron Vision HT-230 microkeratome. The procedure was performed under local anesthesia. Patients were followed for 18 months. Occlusion therapy was started 2 weeks postoperatively and continued for 3 to 4 months. Ten patients suffered from strabismus; they received orthoptic therapy.Uncorrected visual acuity (UCVA) and best spectacle-corrected visual acuity (BSCVA) improved after LASIK. The difference in refraction between the two eyes was reduced as was the angle of strabismus. Binocular vision improved in one patient and simultaneous vision improved in three patients (vision in these patients was monocular before treatment).LASIK with the Nidek EC-5000 excimer laser and the Hansatome Chiron Vision HT-230 microkeratome, together with occlusion and orthoptic therapy for pediatric correction of spherical anisometropia, may be an effective procedure that facilitates increased visual acuity and improved binocular vision. LASIK appears to be a safe surgical procedure for children over 9 years of age.
- Epidemiology of ametropia of U.S. Army recruits. [Journal Article]
- Mil Med 1995 Feb; 160(2):89-91.
All people attempting to enlist in the U.S. Army must undergo a physical examination that requires a rudimentary vision screening. Those who pass the physical, upon reporting to basic training, are again evaluated and any treatment necessary to allow the recruits to function during their initial indoctrination is provided. Those who fail to see 20/20 O.D. and O.S. with their current spectacles fail the screening and are evaluated by an optometrist. If their condition is not disqualifying, appropriate correction is prescribed. We reviewed the records of all the recruits in a 1-month period who either required spectacles to see 20/20 or failed the screening at the 43rd AG BN (reception). Epidemiological evaluation revealed most to be either simple myopes or myopic astigmats. Hyperopia and hyperopic astigmatism accounted for the next most common diagnosis. Other conditions included anisometropia, antimetropia, amblyopia, keratoconus, and nystagmus. Examinations of these recruits were very limited, with dilated fundus evaluations being performed only when there was a high probability of a disqualifying condition. Therefore, it is unknown what retinal disease or degeneration may be present other than what would be visible with direct ophthalmoscopy.
- Prevalence of paradoxical anisometropia. [Journal Article]
- J Am Optom Assoc 1987 Jul; 58(7):572-6.
A sample population of patients with a certain degree of antimetropia or mixed anisometropia was selected. Binocular interference or paradoxical dominance was expected in some of them. This interference is such that the "seemingly worse eye" (the eye with the lesser visual acuity) dominates the binocular vision and leads the subject to wear corrective glasses or contact lenses even though the level of visual acuity in the other eye is adequate without correction. This is what we called paradoxical anisometropia. There was no amblyopia or strabismus present. Twenty percent of our subjects manifested some degree of binocular interference.
- Blink vergence in an antimetropic patient. [Case Reports, Journal Article]
- Am J Optom Physiol Opt 1986 Dec; 63(12):981-4.
A patient with uncorrected antimetropia was found to attain motor fusion through blinking. Although this patient was also able to attain motor fusion through saccadic vergence and slow fusional vergence, he usually relied on blink vergence. In this patient, blink vergence was an efficient alternative to slow fusional vergence.
- An unusual case of antimetropia. [Case Reports, Journal Article]
- Am J Optom Physiol Opt 1985 Apr; 62(4):287-91.
Antimetropia is a condition in which one eye is myopic and the fellow eye is hyperopic. This report describes functional and optical characteristics of a patient with a substantial degree of antimetropia.
- Clinical management of aphakic antimetropia: contact lens overcorrection. [Case Reports, Journal Article]
- J Am Optom Assoc 1983 Aug; 54(8):741-2.