Materials and Methods: The ophthalmic examination findings of preterm and term infants, who were followed up with a diagnosis of ocular coloboma between December 2014 and June 2022, were retrospectively evaluated.

Results: The study included 22 eyes of 15 infants with a mean gestational age of 37.00 ± 3.00 weeks and a mean birth weight of 2752 ± 896 g. The examination was performed at a mean postmenstruel age (PMA) of 36.8 ± 2.7 weeks. There were 5 (33.3%) male and 10 (66.7%) female patients. Of the 15 ocular coloboma infants included in the study, 7 had bilateral, and 8 had unilateral involvement. While isolated bilateral iris coloboma was present in only one case, chorioretinal involvement was present in 13 infants. In one of the cases with bilateral involvement, unilateral lens coloboma was present. Among the accompanying ocular findings, unilateral cataract was found in two cases and unilateral microphthalmia in one case. Strabismus and concomitant systemic diseases were not present in the cases. The spherical, cylindrical and spherical equivalent (SE) values in the coloboma infants were 2.74 ± 1.08 D, -1.57 ± 0.97 D and 1.95 ± 1.04 D, respectively.

Conclusions: In conclusion, this study supports that posterior segment involvement is more common than anterior segment involvement in patients with ocular coloboma. Although a wide range of refractive errors may be observed in these cases, hyperopic refractive error was more prominent in this study. Keywords : Premature, Term, Ocular coloboma, Refractive outcome, Myopia