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Ocular biometric changes following unilateral cataract surgery in children
Yooyeon Park1, Hae Ri Yum2, Sun Young Shin3
1Department of Ophthalmology, College of Medicine, Dankook University, Cheonan, Republic of Korea.
Insights
Unilateral cataract surgery in children under 6 causes significant myopic shift in pseudophakic eyes. This ocular biometric change requires consideration for intraocular lens (IOL) power selection to manage anisometropia.
Area of Science:
- Ophthalmology
- Pediatric ophthalmology
- Refractive error development
Background:
- Cataract surgery in children can lead to significant changes in ocular biometry.
- Understanding refractive development post-surgery is crucial for visual outcomes.
Purpose of the Study:
- To analyze ocular biometric changes after unilateral cataract surgery in pediatric patients.
- To compare refractive and axial changes between pseudophakic and fellow phakic eyes.
Main Methods:
- Retrospective analysis of 57 children under 13 undergoing unilateral cataract surgery.
- Classification into four age groups based on age at surgery.
- Comparison of myopic shift, axial growth, and corneal curvature between operated and fellow eyes.
Main Results:
- Pseudophakic eyes showed a significantly higher overall myopic shift (-3.25 D) and rate of myopic shift (-0.45 D/year) compared to phakic eyes.
- Children under 6 years (Groups I and II) exhibited a significantly higher rate of myopic shift in pseudophakic eyes.
- The rate of myopic shift in pseudophakic eyes decreased with increasing age.
Conclusions:
- Unilateral cataract surgery in young children (under 6) results in significant postoperative myopic shift.
- Consideration of myopic shift and potential anisometropia is essential for intraocular lens power selection in pediatric unilateral cataract surgery.
Purpose:
To analyze ocular biometric changes following unilateral cataract surgery in children.
Methods:
A total of 57 children aged under 13 years who underwent unilateral cataract surgery were analyzed. Groups were classified according to their age at surgery: group I (age <3), II (3≤ age <6), III (6≤ age <9), and IV (age ≥9). The myopic shift, axial growth, and corneal curvature changes were compared between the pseudophakic eyes and the fellow phakic eyes.
Results:
During 7.81 ± 4.39 years, the overall myopic shift (D) and the rate of myopic shift (D/year) were significantly higher at -3.25 ± 3.21 D and -0.45 ± 0.44 D/year in the pseudophakic eyes than -1.78 ± 2.10 D and -0.22 ± 0.29 D/year in the fellow phakic eyes (P = 0.01, 0.004). Group I (-1.14 ± 0.66 vs -0.02 ± 0.45 D/year) and group II (-0.63 ± 0.37 vs -0.31 ± 0.29 D/year) showed significantly higher rate of myopic shift in the pseudophakic eyes than in the phakic eyes. The rate of myopic shift in the pseudophakic eyes decreased in the older age groups (P = 0.001). There was no significant between-eye difference in the changes in axial length and keratometric values postoperatively.
Conclusion:
Following unilateral cataract surgery, a significant postoperative myopic shift was noticed in the pseudophakic eyes compared to the fellow phakic eyes in groups under 6 years old. Postoperative myopic shift and the resultant anisometropia should be considered when selecting the optimal power of IOL in young children requiring unilateral cataract surgery.
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