| Agreement of Actual Corneal Power and Corneal Power Using Topography in Cataract Patients Undergone Refractive Surgery. |
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Min Jung Kim, Shin Hae Park, Choun Ki Joo |
1Laboratory of Ophthalmology and Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea. ckjoo@catholic.ac.kr
2Department of Ophthalmology and Visual Science, Gangnam St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
3Korean Eye Tissue and Gene Bank Related to Blindness, Seoul, Korea. |
| 굴절수술 후 백내장환자의 실제 각막곡률과 각막지형도에 의한 각막곡률의 일치성 |
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김민정1,박신혜2,주천기1-3 |
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Laboratory of Ophthalmology and Visual Science1 Department of Ophthalmology and Visual Science, Gangnam St. Mary`s Hospital, College of Medicine2, The Catholic University of Korea, Seoul, Korea Korean Eye Tissue and Gene Bank Related to Blindness3, Seoul, Korea |
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Correspondence:
Choun-Ki Joo, M.D., Ph.D.1-3 |
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| Abstract |
PURPOSE
To evaluate the agreement between actual corneal power and corneal power using Orbscan II of cataract patients who have undergone refractive surgery. METHODS: We retrospectively evaluated 18 eyes of 14 patients who underwent cataract surgery after refractive surgery. IOL power was targeted for emmetropia retrospectively using the manifest refraction two months after cataract surgery with SRK ll or SRK-T. We evaluated the agreement between actual corneal power and corneal power using 1 mm, 2 mm, 3 mm and 4 mm zone of Orbscan II TOP maps. RESULTS: The actual corneal power of cataract patients who underwent refractive surgery and 1 mm, 2 mm, 3 mm and 4 mm zone of Orbscan II TOP maps shows high agreement. When using a corneal power of 1 mm, 2 mm, 3 mm and 4 mm zone of Orbscan II TOP map, the following estimated refractive powers were observed at a 1 mm zone 0.21+/-0.69D, 2 mm zone 0.14+/-0.70D, 3 mm zone 0.25+/-0.95D and 4 mm zone 0.65+/-0.92D. CONCLUSIONS: The actual corneal power of cataract patients who have undergone refractive surgery and 1 mm, 2 mm, 3 mm and 4 mm zone of Orbscan II TOP maps show high agreement. We recommend selecting a corneal power corresponding to 1 mm or 2 mm zone of Orbscan II TOP maps to avoid hyperopia after cataract surgery. |
| Key Words:
Corneal curvature;IOL power calculation;Orbscan II |
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