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Long-term functional outcomes of different subtypes of primary congenital glaucoma
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    Comments on “Long-term functional outcomes of different subtypes of primary congenital glaucoma”
    • Ishaana Sood, Public Health Researcher Dr Shroff's Charity Eye Hospital
    • Other Contributors:
      • Devindra Sood, Senior Consultant- Glaucoma Services; Head- Centre for Academics, Research and Training
      • Narindar N. Sood, Senior Consultant

    Dear Editor,

    We read the article published by Chaudhary, et al (1) with great interest and laud them on the quality and design of their study. Primary congenital blindness (PCG) poses a challenge to clinicians, both in terms of diagnosis, and treatment. (2)

    We would like to bring to the authors’ notice a similar study conducted in 2017 (3) of 230 eyes of 121 PCG patients having undergone a primary CTT. This study differed from the present study in the fact that it had a longer average follow-up period of 28.87 years with a more concentrated follow-up range of 21.5-38 years. There were also two main differences in the findings of the two studies.

    Contrary to the results in the present study where the infants with PCG fared better than the neonates (48.9% >6/60), the previous study found that 76.3% newborns with PCG had a vision better than 6/60. Additionally, the previous study, found visual acuity to be better than 6/60 in a greater proportion of patients (76.1%) at the last follow-up, as compared to the proportion in the study by Chaudhary et al (55.3%). Applying the WHO recommendation of measuring vision in the better eye, (4) the results improved to 89.3% in the study by Sood et al. (3)

    A possible reason for these disparities between the studies could be the difference in presentation times of the patients and the study inclusion criteria. While the present study reports late presentation, over half of the patients (53%) in the earlier pub...

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    Conflict of Interest:
    None declared.