June 2015
Volume 56, Issue 7
Free
ARVO Annual Meeting Abstract  |   June 2015
Oxygen saturation profiles in Asian Indian eyes with central retinal artery occlusion (CRAO)
Author Affiliations & Notes
  • Ashwin Mohan
    Retina, Narayana Nethralaya, Bangalore, India
  • Priya Srinivasan
    Retina, Narayana Nethralaya, Bangalore, India
  • Supriya Dabir
    Retina, Narayana Nethralaya, Bangalore, India
  • Rajani Battu
    Retina, Narayana Nethralaya, Bangalore, India
  • Naresh Kumar Yadav
    Retina, Narayana Nethralaya, Bangalore, India
  • Rohit Shetty
    Vice-Chairman, Narayana Nethralaya, Bangalore, India
  • Footnotes
    Commercial Relationships Ashwin Mohan, None; Priya Srinivasan, None; Supriya Dabir, None; Rajani Battu, None; Naresh Yadav, None; Rohit Shetty, None
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science June 2015, Vol.56, 3311. doi:
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      Ashwin Mohan, Priya Srinivasan, Supriya Dabir, Rajani Battu, Naresh Kumar Yadav, Rohit Shetty; Oxygen saturation profiles in Asian Indian eyes with central retinal artery occlusion (CRAO). Invest. Ophthalmol. Vis. Sci. 2015;56(7 ):3311.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract
 
Purpose
 

To study the oxygen saturation profiles in Asian Indian eyes with central retinal artery occlusion (CRAO)

 
Methods
 

This is a retrospective review of 10 patients presenting to our hospital in the last 6 months with a history of sudden painless loss of vision and diagnosed as CRAO on clinical examination. In addition to a comprehensive ophthalmic examination, they underwent retinal oximetry (Oxymap T1, Oxymap hf, Reykjavik, Iceland). 2 patients had oximetry pre and post anterior chamber paracentesis and 3 patients had a follow up Oximetry at monthly intervals. Optic disc centered images taken after dilatation were analysed by selecting the thickest arteriole and venule per quadrant for saturation and diameter.

 
Results
 

The oxygen saturation was decreased in both the arterioles (86%) and venules (50%). The arteriolar and venous diameters and the arterio-venous saturation difference did not vary significantly between the groups. In the 3 patients on follow up we saw an improvement of arteriolar saturations in all and venous values in 2 of them. Two patients who underwent anterior chamber paracentesis showed an improvement of both arteriolar and venous saturation values after paracentesis.

 
Conclusions
 

Oximetry in CRAO shows an initial fall in saturations with an increase over time or after paracentesis.  

 
Figure a & b of Patient 1 and c & d of Patient 2 at presentation and immediately after paracentesis respectively
 
Figure a & b of Patient 1 and c & d of Patient 2 at presentation and immediately after paracentesis respectively

 
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