The pupil.

Angle-closure, pupil dilatation, and pupil block.

PREVious papers (Lowe, 1964a) have remarked that when the pupils of eyes with shallow anterior chambers, narrow angles, and open peripheral iridectomies are dilated with homatropine, a considerable proportion of the eyes with persistently narrow angles develop angle-closure, a consequent fall in outflow facility, and a rise in intra-ocular pressure that may reach the fifties within two hours. W...

The Pupil-swapping Coronagraph

A new coronagraph that performs destructive interference between copies of the telescope pupil in which “slices” have been swapped is studied in this paper. A fourth-order “pupil-swapping coronagraph” is particularly attractive for direct imaging of extrasolar terrestrial planets: it achieves 100% throughput at 1.4l/d on a square pupil (72.5% at 1.77 on a circular pupil), is compatible with a c...

The Tabetic Pupil.

DEAR SIRs,-A few days ago I re-read a paper written by me and printed in the March (1941) number of your journal-the paper is entitled the Tabetic Pupil. I was disappointed to'discover that it contains a gross neurological error. Although this mistake does not affect the discussion, or the conclusions arrived at, yet in my opinion it does detract from the merit of the paper as a whole. I would ...

The Tonic Pupil Syndrome.

The Marcus Gunn pupil.

cannot be excluded. Allele association studies are hampered by several possible sources of error." Our study emphasises the need for additional, carefully designed studies when applying this potentially useful method in the search for genetic factors contributing to the aetiology of Parkinson's disease.tion between the oxidative polymorphism and early onset of Parkinson's disease. Genotype rela...