While at the Pasteur Institute, Morax discovered the bacillus Moraxella lacunata, a cause of chronic conjunctivitis.

[2] Victor Morax worked in Louis Pasteur's laboratory where he pursued his interest in bacteriology.

In the 1900s, after Parinaud's passing, Morax went on to be nominated as the ophthalmologist of hospitals in Paris; he was primarily focusing on conjunctivitis and ocular asepsis.

[2] In 1903, he took over the Hopital Lariboisiere and over the span of 26 years, he was able to add more beds and update the ophthalmology department that drew in many new students.

[2] After retirement in 1928, Morax's interest in the field remained constant and he continued his theories at the Pasteur Institute.