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KMID : 1191420060050010015
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Korean Journal of Optometry and Vision Science
2006 Volume.5 No. 1 p.15 ~ p.22
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Refractive Outcome in Preterm Infants
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Lee Ki-Hwang
Moon Chan-Shik
Kim Chu-Hyun
Chang Yoon-Hee
Lew Ho-Min
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Abstract
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Purpose: To evaluate the refractive status and their relation with gestational age and factors influencing the occurrence and degree of myopia in premature infants.
Methods: Premature infants with a gestational age ＜37 weeks and born between Sept. 1994 and June 2004 were enrolled, and subdivided into two groups according to treatment for threshold ROP: Group 1: children born prematurely with threshold ROP, Group 2: children born prematurely without threshold ROP. Cycloplegic retinoscopy and ultrasound biometry were performed. These results were compared to the full term babies (Group 3).
Results: There were significant differences in the incidence of myopia between age of 4 to 6 among the three groups, and the degree of myopia was higher in premature infants born with threshold ROP than the others. There were no significant differences in the axial length and anterior chamber depth between group 1 and 3. The degrees of myopia in group 1 were related to birth weight, intrauterine period, and axial length.
Conclusions: Laser or cryotherapy treated eyes were significantly more myopic than the others. The degree of the myopia was found to be related to the birth weight, axial length, anterior chamber depth, and intrauterine period. Premature infants should be screened regularly and long-term follow up should be recommended to prevent amblyopia, strabismus, and other ocular abnormalities.
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KEYWORD
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Axial length, Myopia, Premature infants, Refractive status
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