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1. An operation for shortening the ocular muscles in asthenopia, etc

Author(s):

Valk, Francis, 1845- author

Publication:

New York : D. Appleton and Company, [1896]

Subject(s):

Asthenopia -- surgery
Oculomotor Muscles -- surgery

2. Strabismus, or crossed eyes: how shall we treat them?

Author(s):

Valk, Francis, 1845- author

Publication:

New York : D. Appleton and Company, [1894]

Subject(s):

Strabismus -- therapy
Strabismus -- surgery
Eyeglasses

3. Report of four operations for the removal of cataract without an iridectomy, and by an entirely new method: with the discussion before the Clinical Society of the New York Post-Graduate Medical School, May 21, 1887

Author(s):

Valk, Francis, 1845- author

Publication:

New York : Press of M.J. Rooney, [1887?]

Subject(s):

Cataract Extraction -- methods

4. Cataract extraction with the iris retractor

Author(s):

Valk, Francis, 1845- author

Publication:

New York : D. Appleton and Company, [1893?]

Subject(s):

Cataract Extraction -- methods
Iris -- surgery