1. ASCHER, K. (1937). Med. Klin., 33, 297.
2. GESERICK, H. (1954). Zbl. Chir., 79, 764.
3. Beitrage zur praktischen Augenheilkunde;SCHON, M.J.A.,1861
4. WATSON, P. G., and SEVEL, D. (1966). Brit. J. Ophthal., 50, 209.
5. for the installation of laser coagulators in small clinics may be valid; but he has misquoted me. I said the laser I was using frequently produced pre-retinal haemorrhages and always destroyed the nerve-fibre layer of the retina at its higher energy settings. The scar formation accompanying these lesions was always large;SIRs, Mr. Kelly's argument (Brit. J;Ophthal; observations should be considered by clinical ophthalmologists with this reservation in mind,1967