Even in viral conjunctivitis, ophthalmologists often write anti-biotics to prevent secondary bacterial infection. Bilateral circular corneal abrasion are not mentioned as it's side effects in literature that I checked. Eye irritation, burning, stinging or even swelling of the eye can occur due to gentamicin drops. Circular corneal abrasion must be a very rare finding. Circum corneal injection though is vey common and can occur in many disease states and it may be associated with photophobia. May be because the condition is not known that a diagnosis of child abuse was made. You need to discuss it with the treating doctor. Thanks
Studies are not done on infants because of ethical reasons but if an infant comes with conjunctivitis one has to prescribe anti-biotics. However, in viral conjunctivitis, anti-biotics may not be prescribed especially if the diagnosis is clear. In my clinical practice I have never seen perfect complete corneal abrasion and that too bilateral and this includes adults also. Another thing is why did it happen in both eyes when she was having conjunctivitis in only one eye and so must be using drop in only the concerned eye. However, a diagnosis of child abuse should also not be made just by this finding. I mean the doubt will be there regarding the diagnosis. Thanks.
Follow-up questions if any are most welcome.