- 영문명
- Comparison of Four Systems of IOL Calculation after Keratorefractive Surgery in Eyes Requiring Cataract Surgery
- 발행기관
- 대한안과학회
- 저자명
- 이우석 문상정 이경헌 이동준,Woo Seok Lee, MD, Sang Jeong Moon, MD, Kyung Heon Lee, MD, Dong Jun Lee, MD
- 간행물 정보
- 『대한안과학회지』Ophthalmological Society,volume54,number12, 1810~1817쪽, 전체 8쪽
- 주제분류
- 인문학 > 역사학
- 파일형태
- 발행일자
- 2013.12.13
국문 초록
영문 초록
Purpose: To report the evaluation and comparison of true corneal power after corneal refractive surgery through ARK, Orbscan II®, Pentacam and IOL master.
Methods: Target IOL (Intraocular lens) power calculated with the SRK/T formula using SMK (Sungmo Eye Hospital keratometry), which is a new method for measuring corneal refractive power, was compared with the back-calculated ideal IOL power after cataract surgery for 30 eyes that required cataract surgery and had previously undergone refractive surgery. Target IOL powers calculated using 4 systems were compared with IOL power calculated using the clinical history method for 64 eyes that had undergone refractive surgery.
Results: Using SMK with the SRK/T formula, the actual refraction was within ±0.5 diopter (D) of the intended refraction for 63.8% of eyes and within ±1.0 D for 90.9% of eyes. Compared with target IOL power calculated with the clinical history method, target IOL power calculated by SMK with the SRK/T formula had a difference of 1.95 ± 0.86 D, which was similar to the results calculated by the Haigis-L formula and by TNP with Haigis.
Conclusions: The difference in characteristics of intraocular lenses subtly affects the vision quality as measured by values such as MTF cut-off and Strehl ratio after cataract surgery. OQAS based on the double-pass technique is considered useful in more objective estimates of the real retinal image quality after cataract surgery which is difficult to explain simply by measuring visual acuity.
J Korean Ophthalmol Soc 2013;54(12):1818-1823
Methods: Target IOL (Intraocular lens) power calculated with the SRK/T formula using SMK (Sungmo Eye Hospital keratometry), which is a new method for measuring corneal refractive power, was compared with the back-calculated ideal IOL power after cataract surgery for 30 eyes that required cataract surgery and had previously undergone refractive surgery. Target IOL powers calculated using 4 systems were compared with IOL power calculated using the clinical history method for 64 eyes that had undergone refractive surgery.
Results: Using SMK with the SRK/T formula, the actual refraction was within ±0.5 diopter (D) of the intended refraction for 63.8% of eyes and within ±1.0 D for 90.9% of eyes. Compared with target IOL power calculated with the clinical history method, target IOL power calculated by SMK with the SRK/T formula had a difference of 1.95 ± 0.86 D, which was similar to the results calculated by the Haigis-L formula and by TNP with Haigis.
Conclusions: The difference in characteristics of intraocular lenses subtly affects the vision quality as measured by values such as MTF cut-off and Strehl ratio after cataract surgery. OQAS based on the double-pass technique is considered useful in more objective estimates of the real retinal image quality after cataract surgery which is difficult to explain simply by measuring visual acuity.
J Korean Ophthalmol Soc 2013;54(12):1818-1823
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