PubMed ID: 19488274
Author(s): Dubra A, Paterson C, Dainty C. Study of the tear topography dynamics using a lateral shearing interferometer. Opt Express. 2004 Dec 13;12(25):6278-88. PMID 19488274
Journal: Optics Express, Volume 12, Issue 25, Dec 2004
The dynamics of the pre-corneal tear film topography are studied on 21 subjects with a purpose-built lateral shearing interferometer. Interesting tear topography features such as post-blink undulation, break-up, eyelid-produced bumps/ridges, bubbles and rough pre-contact lens tear surfaces were recorded. Using the calculated tear topography maps, the effects of the tear dynamics in visual performance, refractive surgery and ophthalmic adaptive optics are discussed in terms of wavefront RMS. The potential of lateral shearing interferometry for clinical applications such as dry eye diagnosis and contact lens performance studies is illustrated by the recorded topography features such as post-blink undulation, break-up, eyelid-produced bumps/ridges, bubbles and rough tear surfaces in front of contact lenses.