Rigid lens centration: Effects of lens design and material density
Two lens features of relevance to the control of rigid lens dynamics are material density and lens design. The effect of these two features on lens centration was investigated for two subject groups (four subjects with high riding lenses and four subjects with low riding lenses). Each subject was fit with 12 different lenses- six designs in each of two materials. The settled vertical lens position for a five blink cycle was assessed in every case. Overall, there was a statistically significant inter-subject effect of the measurements (p<0.001) and a significant difference in lens position between the two groups (p<0.001), For subjects with low riding lenses, lens material changes improved lens centration, but changes in lens thickness were relatively ineffective. An increase in lens diameter caused a lowering of the settled lens position for both groups. In general, all corrective strategies were less effective for high riding lenses then for low riding lenses
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|Item Type:||Journal Article|
|Additional Information:||For more information, please refer to the journal’s website (see link) or contact the author. Author contact details: email@example.com|
|Keywords:||Rigid gas permeable, contact lens design, contact lens material, fitting|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health|
Current > Institutes > Institute of Health and Biomedical Innovation
|Copyright Owner:||Copyright 1996 Elsevier|
|Deposited On:||30 Jan 2006|
|Last Modified:||15 Jan 2009 16:54|
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