Timing of Jones Tube Placement After Excision of Nasal or Lacrimal Drainage System Malignancy: A Survey of the American Society of Ophthalmic Plastic and Reconstructive Surgery (ASOPRS).

Purpose: To elicit, from a survey of oculoplastic surgeons, the timing and reason for delaying Jones tube placement after the excision of nasal or lacrimal drainage system malignancy.

Methods: The authors reviewed current literature and distributed an anonymous survey to 627 members of the American Society of Ophthalmic Plastic and Reconstructive Surgery (ASOPRS) to determine the length of time members wait to perform a Jones tube placement after the removal of nasal or lacrimal drainage system malignancy. The survey also included questions about the rationale for this waiting period.

Intraoperative complications and visual outcomes of cataract surgery in patients with retinal vein occlusion: multicenter database study.

Purpose: To compare the visual outcomes and the rate of intraoperative complications in eyes with and without retinal vein occlusion (RVO) after phacoemulsification over a period of 15 years in a real-world clinical setting.

Setting: 8 independent U.K.

Residue Y70 of the Nitrilase Cyanide Dihydratase from Is Critical for Formation and Activity of the Spiral Oligomer.

Nitrilases pose attractive alternatives to the chemical hydrolysis of nitrile compounds. The activity of bacterial nitrilases towards substrate is intimately tied to the formation of large spiral-shaped oligomers. In the nitrilase CynD (cyanide dihydratase) from , mutations in a predicted oligomeric surface region altered its oligomerization and reduced its activity.