| Citation:Park SH,Che CY,Kim SI,Park CY,Lee JH,Kim YH,Jung JW,Lee JS,Lee JE.Comparison of clinical outcomes after femtosecond laser in situ keratomileusis in eyes with low or high myopia.Int J Ophthalmol 2020;13(11):1780-1787,doi:10.18240/ijo.2020.11.15 |
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| Comparison of clinical outcomes after femtosecond laser in situ keratomileusis in eyes with low or high myopia |
| Received:September 27, 2019 Revised:March 23, 2020 |
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| DOI：10.18240/ijo.2020.11.15 |
| Key Words:femtosecond laser LASIK myopia |
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| Author | Institution |
| Su Hwan Park |
Department of Ophthalmology, School of Medicine, Pusan National University, Yangsan 50612, Gyeongnam Province, Republic of Korea; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Gyeongnam Province, Republic of Korea |
| Cheng-Ye Che |
Department of Ophthalmology, the Affiliated Hospital of Medical College, Qingdao University, Qingdao , Shandong Province, China |
| Sung Il Kim |
Department of Ophthalmology, School of Medicine, Pusan National University, Yangsan 50612, Gyeongnam Province, Republic of Korea; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Gyeongnam Province, Republic of Korea |
| Choul Yong Park |
Department of Ophthalmology, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang 10326, Gyeonggi Province, Republic of Korea |
| Jong Heon Lee |
Busan Medical Center, Busan 47527, Republic of Korea |
| Young Hee Kim |
BalGunNun Eye Hospital, Busan 47195, Republic of Korea |
| Ji Won Jung |
BalGunNun Eye Hospital, Busan 47195, Republic of Korea |
| Jong Soo Lee |
Department of Ophthalmology, School of Medicine, Pusan National University, Yangsan 50612, Gyeongnam Province, Republic of Korea |
| Ji Eun Lee |
Department of Ophthalmology, School of Medicine, Pusan National University, Yangsan 50612, Gyeongnam Province, Republic of Korea; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Gyeongnam Province, Republic of Korea |
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| Abstract: |
| AIM: To compare the clinical results of femtosecond (FS) laser in situ keratomileusis (LASIK) in high myopic patients and low myopic patients.
METHODS: This study included 212 myopic eyes undergoing LASIK using a VisuMax 500kHz FS laser. All treated eyes were assigned to one of two groups according to preoperative manifest spherical refraction: low myopia group (A, >?4.0 D) and high myopia group (B, ≤?4.0 D). Uncorrected and corrected distance visual acuity (UDVA, CDVA), refractive errors, and higher-order aberrations (HOAs) were measured preoperatively and 1wk, 1, 3 and 6mo postoperatively.
RESULTS: At 6mo of follow-up, 92% and 76% had a UDVA of 20/20 or better in group A and B, respectively (P=0.037) and UDVA was significantly different between two groups (P=0.042). Six and seven percentage lost one line of CDVA in group A and B, respectively (P=0.572) and no eyes in both groups lost more than two lines. Each group had 87% and 76% of treated eyes within ±0.5 D of the intended correction (P=0.186), and 13% and 43% with a change of >0.50 D in spherical equivalent from 1wk to 6mo postoperatively (P=0.005). In terms of postoperative astigmatism, each group had 89.1% and 76.6% within ±0.50 D, respectively and there was significant difference (P=0.006). Group A tends to induce smaller HOAs than group B.
CONCLUSION: FS LASIK is effective and safe for correcting high myopia as well as low myopia. However, high myopic eyes showed more postoperative astigmatism and HOAs which affect visual acuity. |
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