Eye Position Changes After Cataract Surgery in Patients with Exotropia

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  • Akaishizawa Chiho
    Department of Ophthalmology, Kitasato University Hospital
  • Hoshikawa Rie
    Department of Rehabilitation, Orthoptics and Visual Science Course, School of Allied Health Science, Kitasato University
  • Iida Yoshihiko
    Department of Ophthalmology, Kitasato University Hospital
  • Ishikawa Hitoshi
    Department of Rehabilitation, Orthoptics and Visual Science Course, School of Allied Health Science, Kitasato University
  • Shoji Nobuyuki
    Department of Ophthalmology, Kitasato University Hospital

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  • 外斜視を伴う患者の白内障手術前後の眼位変化

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Abstract

<p>[Purpose] To evaluate changes in eye position, angle of deviation, and presence of diplopia before and after cataract surgery in patients with exotropia.</p><p>[Subjects and Methods] Subjects were 58 patients with exotropia (average age, 68.4 ±10.5 years) who had received pre- and postoperative eye position tests and undergone cataract surgery at Kitasato University Hospital. Pre- and postoperative eye positions and angles of deviation assessed by the alternate prism cover test and presence of diplopia were investigated. </p><p>[Results] The average horizontal and vertical deviations at near and distance did not significantly differ before and after surgery. An increase greater than 10⊿ in the horizontal deviation either at near or distance was observed in 5 (8.8%) patients. Increased angle of deviation was only observed at near in patients under 60 years of age. A decrease greater than 10⊿ in the horizontal deviation either at near or distance was seen in 8 patients. Of 8, 4 patients were under 60 years of age and their eye position also changed from exotropia to exophoria in addition to the decreased horizontal deviation. Preoperatively 16 (27.6%) patients had diplopia which disappeared postoperatively in 10 patients. On the other hand, 7 of the 42 patients without preoperative diplopia showed diplopia after surgery. Some of these 7 patients showed an increased angle of deviation postoperatively, indicating the possibility of undetected preoperative diplopia due to cataract that manifested postoperatively.</p><p>[Conclusion] Changes in eye position, angle of deviation, and presence of diplopia were postoperatively observed in cataract patients with exotropia. Particularly these changes tended to occur in patients under the age of 60 and thus, tests for strabismus should be performed before and after cataract surgery.</p>

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