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KMID : 1159320180200030213
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Korean Journal of Vision Science
2018 Volume.20 No. 3 p.213 ~ p.226
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Visual Outcomes of Monovision Keratorefractive Surgery in Presbyopic Patients
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Min Ji-Young
Lee Koon-Ja
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Abstract
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Purpose : To assess the change of binocular visual function and visual acuity in monovision surgery patients.
Methods : The subjects were 58(49.57 ± 3.27 years) monovision patients who wear glasses and contact lens before monovision surgery. 100% and 10% contrast visual acuity, near stereoacuity, distance and near convergence fused amplitude, amplitude of accommodation were measured and visual satisfaction in the real life after surgery was evaluated using a Questionnaire. All measurements were conducted before and after 1, 3 and 6 months of surgery. The pre-operative measurements were performed with glasses or contact lenses on, and post-operative measurements were conducted in the naked eye. All measurements among groups were statistically analyzed with the SPSS 21.0.
Results : Among 58 subjects, 5 subjects (10 eyes) were hyperopia, 53 subjects (106 eyes) were myopia. Binocular distance and near contrast visual acuity was decreased after surgery, especially the 10 % contrast visual acuity under mesopic condition was decreased and there was no difference according to the postoperative period. In the questionnaire survey, satisfaction of distance and near vision after surgery was getting better, and night glare was worsen compare to pre-operation, however, general satisfaction was high after surgery. The near stereoacuity and distance convergence fused amplitude were decreased, and no changes in near sensory suppression and near convergence fused amplitude, and the amplitude of accommodation was increased in binocular and non-dominant eye after monovision surgery.
Conclusion : The visual acuity, near stereoacuity and distance convergence fused amplitude were decreased after monovision surgery compared to progressive glasses multifocal contact lens wear, however, visual satisfaction in real life was improved.
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KEYWORD
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Anisometropia , Corneal Refractive Surgery , Monovision , Presbyopia , Stereoacuity
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