Optic disc neovascularization in association with Vogt-Koyanagi-Harada syndrome.
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Female↗
Biomedical subjects
K W To
Publications and source records attributed to K W To.
Atypical presumed CMV retinitis.
Cytomegalovirus (CMV) retinitis is a common and one of the most serious ophthalmic manifestations of the acquired immunodeficiency syndrome (AIDS). Early recognition is essential in the proper management of this necrotizing and progressive infection. We discuss an unusual presentation of CMV retinitis which appeared initially only in the foveal region.
Acquired Immunodeficiency Syndrome↗
Neurofibromatosis and neural crest neoplasms: primary acquired melanosis and malignant melanoma of the conjunctiva.
With an occurrence of approximately 1 in 3000 births, von Recklinghausen neurofibromatosis (NF) is one of the most common inherited human disorders. NF is considered a neurocristopathy, a disorder of neural crest derived cells. One of the complications of NF is the development of neural crest derived malignancies such as malignant schwannoma, pheochromocytoma, and malignant melanoma of the skin and choroid. The case history of a patient with NF and conjunctival malignant melanoma which developed in an eye with primary acquired melanosis is yet another example of a neural crest malignancy developing in a NF patient.
Biopsy↗
Relative efficacy of the argon green, argon blue-green, and krypton red lasers for 10-0 nylon subconjunctival laser suture lysis.
BACKGROUND AND OBJECTIVE: To determine the optimal wavelength for subconjunctival laser suture lysis. MATERIALS AND METHODS: 130 black monofilament 10-0 nylon sutures were sewn subconjunctivally into the bare sclera of enucleated rabbit globes. The lowest energy levels facilitating laser suture lysis were determined for the argon green (514.5 NM), argon blue-green (488.0 NM, 514.5 NM), and krypton red (647.1 NM) wavelengths. In addition, absorption spectroscopy was performed on the suture material and conjunctiva using the Perkin Elmer W/VIS Lambda 2 spectrometer. RESULTS: Krypton red produced the fewest buttonhole defects, and it was also the most efficient energy source for suture lysis (P = 0.0001) under nontenectomized conjunctiva. Absorbance spectra studies revealed peak absorbance at 628 NM for the 10-0 nylon suture material. CONCLUSIONS: Based on animal and absorption spectroscopy studies, krypton red may be a safer and more efficient wavelength for subconjunctival laser suture lysis.
Animals↗