Anisometropia and Refractive Status in Children with Bilateral Congenital Nasolacrimal Duct Obstruction

Sorath Noorani Siddiqui1, Abdul Hannan1, Hassan Mansoor1

  • 1Department of Pediatric Ophthalmology, Al-Shifa Trust Eye Hospital, Rawalpindi.

Insights

Children with bilateral congenital nasolacrimal duct obstruction (CNLDO) show insignificant refractive differences between eyes. Routine cycloplegic refraction and early surgery may not be urgent for bilateral CNLDO cases.

Area of Science:

  • Ophthalmology
  • Pediatric Ophthalmology
  • Refractive Error Assessment

Background:

  • Congenital nasolacrimal duct obstruction (CNLDO) is common in infants.
  • Bilateral CNLDO affects both eyes, potentially impacting visual development.
  • Understanding refractive status in these children is crucial for timely management.

Purpose of the Study:

  • To evaluate the refractive status in children diagnosed with bilateral CNLDO.
  • To compare refractive errors between the two eyes in affected children.
  • To inform management strategies for bilateral CNLDO.

Main Methods:

  • A descriptive study was conducted involving 117 children with bilateral CNLDO.
  • Cycloplegic refraction was performed to assess refractive errors.
  • Interocular differences in spherical equivalent and cylindrical errors were analyzed.

Main Results:

  • The median age of participants was 32 months.
  • No significant interocular difference in spherical equivalent or cylindrical refractive errors was found (p>0.05).
  • Anisometropia (>1 D difference) was observed in 5.98% of children.

Conclusions:

  • Routine cycloplegic refraction is less urgent in bilateral CNLDO compared to unilateral cases.
  • Delaying early surgical intervention for bilateral CNLDO may reduce parental distress and improve health economics.
  • This suggests a more conservative approach to refractive assessment and surgical timing in bilateral CNLDO.
Abstract

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