Impact of peripheral optical properties induced by orthokeratology lens use on myopia progression
Young-Sik Yoo,
Dae Yu Kim,
Yong-Soo Byun,
Qiuzhi Ji,
In-Kwon Chung,
Woong-Joo Whang,
Mi Ra Park,
Hyun-Seung Kim,
Kyung-Sun Na,
Choun-Ki Joo,
Geunyoung Yoon
Affiliations
Young-Sik Yoo
Department of Ophthalmology, College of Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, 271, Cheonbo-ro, Uijeongbu-si, Gyeonggi-do, South Korea; Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, 135-710, Seoul, South Korea
Dae Yu Kim
Electrical Engineering, College of Engineering, Inha University, 100, Inha-ro, Michuhol-gu, Incheon, South Korea
Yong-Soo Byun
Department of Ophthalmology and Visual Science, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, South Korea
Qiuzhi Ji
Flaum Eye Institute, The Institute of Optics, Center for Visual Science, University of Rochester, 601 Elmwood Ave., Box 314, 14642, Rochester, New York, USA
In-Kwon Chung
Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, 170, Juhwa-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do, South Korea
Woong-Joo Whang
Department of Ophthalmology, College of Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, 10 63-ro, Yeongdeungpo-gu, 07345, Seoul, South Korea
Mi Ra Park
Department of Ophthalmology, College of Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, 10 63-ro, Yeongdeungpo-gu, 07345, Seoul, South Korea
Hyun-Seung Kim
Department of Ophthalmology and Visual Science, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, South Korea
Kyung-Sun Na
Department of Ophthalmology, College of Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, 10 63-ro, Yeongdeungpo-gu, 07345, Seoul, South Korea; Corresponding author.
Choun-Ki Joo
CK St. Mary's Eye Center, 563, Gangnam-daero, Seocho-gu, Seoul, South Korea
Geunyoung Yoon
Flaum Eye Institute, The Institute of Optics, Center for Visual Science, University of Rochester, 601 Elmwood Ave., Box 314, 14642, Rochester, New York, USA
The objective of the present retrospective comparative cohort study was to compare the impact of wearing glasses versus an orthokeratology (Ortho-K) lens on peripheral optical properties and myopia progression in a population of South Korean children. Participants included children with myopia, between 8 and 12 years of age (n = 22 eyes), and divided into two groups: those who used glasses (Group I, n = 9) and those who used an Ortho-K lens (Group II, n = 13). Myopia progression over one year was quantified by changes in the central axial length of the eye. Keratometry and corneal aberrations on both the anterior and posterior surfaces of the eye were obtained using a Scheimpflug camera. A custom-developed Shack-Hartmann aberrometer was also used to measure peripheral aberrations across the horizontal visual field, up to 30°, and along the nasal-temporal meridian in 10-degree steps. Central axial elongation was larger in Group I (0.59 ± 0.21 mm) than in Group II (0.34 ± 0.18 mm) (P = .01). Relative peripheral spherical refractions at 10 and 20° nasally and at 10° temporally (P = 0.04, 0.049, and 0.042, respectively) relative to the fovea were positively correlated with central axial elongation in Group II. Group II exhibited an increase in peripheral ocular high order aberrations, such as horizontal coma and asymmetric trefoil. The use of Ortho-K lenses was found to slow the rate of central axis elongation in children with myopia. This effect might be related to an increase in both peripheral spherical refraction and peripheral ocular higher order aberrations with Ortho-K lens use.
