Reduction of energy in photocoagulation with the Zeiss-Oberkochen xenon-arc apparatus

Optical Attachment to the O'Malley Photocoagulator

“…The white rings around the lesions which have been described earlier for the ZSA [3] appear in the Clinitex lesions as well.…”

“…For both systems, field stop 3 was chosen, although the retinal image of the field stop of the ZSA is then 1.8 times larger than that of the CSA. Since, however, the energy dis tribution across the coagulation beam at the retinal level is so much different [3] a com parison between field stop images of equal diameter would have been inadequate any way. The energy concentration at the center of the field in the ZSA tends to reduce di ameter of the lesion.…”

Optical Attachment to the O'Malley Photocoagulator

“…The white rings around the lesions which have been described earlier for the ZSA [3] appear in the Clinitex lesions as well.…”

“…For both systems, field stop 3 was chosen, although the retinal image of the field stop of the ZSA is then 1.8 times larger than that of the CSA. Since, however, the energy dis tribution across the coagulation beam at the retinal level is so much different [3] a com parison between field stop images of equal diameter would have been inadequate any way. The energy concentration at the center of the field in the ZSA tends to reduce di ameter of the lesion.…”

Optical Attachment to the O'Malley Photocoagulator

“…The white rings around the lesions which have been described earlier for the ZSA [3] appear in the Clinitex lesions as well.…”

“…For both systems, field stop 3 was chosen, although the retinal image of the field stop of the ZSA is then 1.8 times larger than that of the CSA. Since, however, the energy dis tribution across the coagulation beam at the retinal level is so much different [3] a com parison between field stop images of equal diameter would have been inadequate any way. The energy concentration at the center of the field in the ZSA tends to reduce di ameter of the lesion.…”

Optical Attachment to the O'Malley Photocoagulator

“…The white rings around the lesions which have been described earlier for the ZSA [3] appear in the Clinitex lesions as well.…”

“…For both systems, field stop 3 was chosen, although the retinal image of the field stop of the ZSA is then 1.8 times larger than that of the CSA. Since, however, the energy dis tribution across the coagulation beam at the retinal level is so much different [3] a com parison between field stop images of equal diameter would have been inadequate any way. The energy concentration at the center of the field in the ZSA tends to reduce di ameter of the lesion.…”