Effect of buckling material on ocular rigidity.
Enucleated human eyes were banded with metal and silicone bands to produce reductions in their diameter of 2 mm and 4 mm. The ocular rigidity produced by each banding material at each diameter was measured in the pressure range of 10 mmHg to 40 mmHg. Metal bands produced mild reductions in ocular rigidity that were significantly (P less than 0.05 to 0.01) lower than the control ocular rigidities in some pressure ranges. Silicone bands produced large reductions in ocular rigidity that were significantly (P less than 0.01) lower than ocular rigidities observed in metal-banded or control conditions in all pressure ranges. The influence of the elastic silicone banding material on ocular rigidity was greater than the influence of altered shape and wall stress that occurred with metal banding.
Whitacre
M M
MM
Department of Ophthalmology, University of Kansas Medical Center, Kansas City 66103.
Emig
M D
MD
Hassanein
K
K
D000368:Aged; D000369:Aged, 80 and over; D004548:Elasticity; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D008670:Metals; D009799:Ocular Physiological Phenomena; D012591:Scleral Buckling; D012826:Silicone Elastomers
D008670:Metals; D012826:Silicone Elastomers