Fifty-seven patients (114 eyes) with threshold ROP who underwent
laser therapy were contacted for reassessment. A chart review was performed for all patients to collect data on visual acuity,
retinal status and
strabismus. A favorable visual outcome was defined as ⩾20/160 (Snellen acuity) for young adults (cooperative patients), and ⩾CSM for children (uncooperative patients) while unfavorable visual outcome was defined as <20/160 or <CSM. Vision in uncooperative children was graded as central, steady, maintain. Descriptive and inferential analyses were conducted. Chi(2) and odds ratios were calculated whenever appropriate. A P value <0.05 was considered as statistically significant.
RESULTS: The mean age at reassessment was 5.2 ± 2.5 years (range, 1-10 years) where 36 (63.2%) patients were males and 21 (36.8%) were females. Out Of the 114
laser treated eyes, 73 (64%) were myopic, with mean spherical equivalent (SE) of -6.69 (5.9), range (-0.25 to -21) diaopters, 8 (7%) were emmetrope, while other 33 (29%) were hyperopic with mean SE of +2.43 (3.04), range (+0.25 to +17) diaopters.
Strabismus was present in 31 patients (54.4%) of whom 81% (25/31) were esotropic. Retina was found to be normal in 77.1% of the examined eyes, while the remaining eyes had either macular dragging or
retinal detachment. Almost 70% of the eyes with a normal
retinal examination had favorable visual outcome. Thirteen (11.4%) eyes had zone 1 retinopathy, 83 (72.8%) eyes had zone 2 retinopathy and 2 (1.8%) eyes had zone 3 retinopathy.
Vitreous hemorrhage was present in 7 (6.1%) eyes prior to
laser treatment. The relationship between final
retinal status and visual outcome was statistically significant (P < 0.0001). There was no statistically significant correlation between visual outcome and the zone of the retinopathy (P = 0.448).
CONCLUSION: