Question:
there was a report released today (in the newspaper) that associates hypO and glaucomaglaucoma, and guess what? i had an eye exam a month ago and the pressure in my right eye is high, after several years of normal, normal, normal, normal, normal, normal ...
i have to go back and have it checked again, and at best i'll have be watched; at worst, treated for glaucoma
Answer:
Researchers from Vision Cooperative Research Centre, Sydney, New South Wales, Australia; Institute for Eye Research, Sydney, New South Wales, Australia; and School of Optometry and Vision Science, University of New South Wales, Sydney, New South Wales, Australia; have presented an article titled: “Role of hypo-osmotic saline drops in ocular comfort during contact lens wear.”
The researchers from Sydney have concluded:
“Hypo-osmotic saline drops were preferred by a greater number of subjects and contact lens osmolality tended to be lower with the use of hypo-osmotic saline.”
“Hypo-osmotic drops have the potential to decrease contact lens osmolality which in turn may help improve ocular comfort.”
“This has possible impact on the practitioners’ choice of the lens rewetting drop recommended and the design of future lens rewetting drops.”
The researchers from Sydney have also noted:
“Fifteen symptomatic subjects wore Lotrafilcon A lenses bilaterally for 6h on two different days.”
“According to randomisation, hypo-osmotic (280mmol/kg) or hyper-osmotic (380mmol/kg) saline drops were applied four times during each day and ocular symptoms, tear film and contact lens parameters, and contact lens osmolality were assessed.”
“Sixty percent of the subjects preferred the hypo-osmotic saline drops, compared to 33%, who preferred the hyper-osmotic ones.”
“Subjects experienced significantly less dryness and lens awareness with hypo-osmotic saline drops compared to hyper-osmotic ones (p<0.05).”
“Using the hypo-osmotic drops, there was a trend for decreased contact lens osmolality from 379 to 343mmol/kg (p=0.06).”
“There were no differences in lipid layer, non-invasive tear film break-up time, lens surface wettability, lens water content after wear, lens movement on eye or ocular staining and indentation between saline drops (all p>0.05).”
“Interestingly, the difference in contact lens osmolality between drops did not reflect the osmolality difference between the two saline drops.”
