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Long term functional and structural outcomes of laser therapy for retinopathy of prematurity
  1. E McLoone1,
  2. M O’Keefe1,
  3. S McLoone2,
  4. B Lanigan1
  1. 1Department of Ophthalmology, Children’s University Hospital, Temple Street, Dublin 1, and University College Dublin, Republic of Ireland
  2. 2Department of Electronic Engineering, NUI Maynooth, Maynooth, Co Kildare, Republic of Ireland
  1. Correspondence to: Professor M O’Keefe The Children’s Hospital, Temple Street, Dublin 1, Republic of Ireland; mokeefe{at}materprivate.ie

Abstract

Aims: To assess the long term functional and structural outcomes of premature babies who received diode laser photocoagulation for threshold retinopathy of prematurity (ROP).

Methods: 25 patients (43 eyes) treated with laser were recalled for assessment at a mean follow up of 11 years. A further seven patients (14 eyes) with subthreshold ROP, which had regressed spontaneously without laser treatment, were also examined. All children underwent distance acuity, near acuity, contrast sensitivity (CS), and colour vision assessments followed by a dilated fundal examination and cycloplegic autorefraction.

Results: The laser treated eyes had a mean distance visual acuity of 0.37 logMAR, a mean near visual acuity of 0.39 logMAR, a mean contrast sensitivity of 1.49 log CS units, and a mean spherical equivalent of −2.10D. An unfavourable distance visual acuity outcome occurred in five eyes (13.5%). An unfavourable near visual acuity outcome was also noted in the five eyes (13.5%) with poor distance visual outcome. 7% had an unfavourable structural outcome. On comparison with the control group, there was no significant difference in near acuity, CS, refraction, or colour vision between the two groups. However, there was a statistically significant difference in terms of distance visual acuity (p = 0.03).

Conclusions: Laser treated eyes with favourable structural outcome have a good visual outcome. The results show a long term benefit from diode laser photocoagulation in preserving distance and near vision in eyes with threshold ROP.

  • BCDVA, best corrected distance visual acuity
  • BCNVA, best corrected near visual acuity
  • CS, contrast sensitivity
  • IVH, intraventricular haemorrhage
  • ROP, retinopathy of prematurity
  • diode laser photocoagulation
  • retinopathy of prematurity
  • visual outcome
  • infants
  • BCDVA, best corrected distance visual acuity
  • BCNVA, best corrected near visual acuity
  • CS, contrast sensitivity
  • IVH, intraventricular haemorrhage
  • ROP, retinopathy of prematurity
  • diode laser photocoagulation
  • retinopathy of prematurity
  • visual outcome
  • infants

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Footnotes

  • The corresponding author declares on behalf of all authors that there are no competing interests.

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