J C Parr

The Otago photoscreener, a method for the mass screening of infants to detect squint and refractive errors.

J. C. Parr, A. Simpson, A C Molteno, 1983, Transactions of the Ophthalmological Society of New Zealand.

Mathematic relationships between the width of a retinal artery and the widths of its branches.

J. C. Parr, G. Spears, J C Parr, 1974, American journal of ophthalmology.

Comparison of methods of measuring vessel widths on retinal photographs and the effect of fluorescein injection on apparent retinal vessel calibers.

J. C. Parr, G. Spears, J C Parr, 1969, American journal of ophthalmology.

General caliber of the retinal arteries expressed as the equivalent width of the central retinal artery.

J. C. Parr, G. Spears, J C Parr, 1974, American journal of ophthalmology.