Infiltrative event

Well-defined stable isotope profiles may be used to provide quantitative information on fluid fluxes such as the direction of fluid flow and the duration of infiltration events (Baumgarmer and Rumble 1988 Bickle and Baker 1990 Cartwright and Valley 1991 Dipple and Ferry 1992 Baumgartner and Valley 2001). In well constrained situations, fluid flow modeling permits estimation of fluid fluxes that are far more realistic than fluid/rock ratios calculated from a zero-dimensional model. 

Infiltrative events includes six subcategories microbial keratitis, CL-induced peripheral ulcer, CL-induced red eye, infiltrative keratitis, asymptomatic infiltrative keratitis, and asymptomatic infiltration... 

Classification of the Six Contact Lens-Related Infiltrative Events Including Symptoms, Signs, and Management and Treatment Options... 

Adapted from Sweeney DF, Jalbert I, Convey M, et al. Clinical characterization of corneal infiltrative events observed with soft contact lens wear. Cornea 2003 22 435-442. 

Any infiltrative event necessitates discontinuation of contact lens wear. With significant corneal involvement and an anterior chamber reaction, cycloplegia with a long-acting agent such as 5% homatropine enhances patient comfort and helps to relieve iris congestion. 

Once contact lens wear is discontinued, mild infiltrative events are self-limiting over a few days to a week. The infiltrates take longer to resolve than the associated... 

Efron N, Morgan PB, Hill EA, et aLThe size, location, and dhiical severity of corneal infiltrative events associated with contact lens wear. Optom Vis Sci 2005 82 519-527. 

Figure 7.3 (A) Seasonal variations in drip rate with superimposed short-term hydrological events from a stalactite in Pere-Noel cave in Belgium there is a close relationship between flow rate and periods of high water excess (Genty and Defiandre, 1998). (B) Variations in cation loads, as monitored by electroconductivity, of drip waters in response to seasonal patterns and individual infiltration events for two drips at Ernesto cave (Frisia et al., 2000).

The effects of infiltration events are quite variable spatially and range from an increase in flow with no change in chemistry in an entirely... 

B) Variations in cation loads, as monitored by electroconductivity, of drip waters in response to seasonal patterns and individual infiltration events... 

The composition of groundwater recharge, which is influenced by the chemistry of precipitation, leaching of salts accumulated by evapotranspiration (ET) between infiltration events, organic activity in the soil, and weathering of soil materials. 

Water residing in the subsurface above the water table normally occurs in a partially saturated environment, although infiltration events may produce temporary saturated conditions above the water table and the capillary zone may also be mostly saturated... 

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