Topography accurately measures the global corneal astigmatism, quantifies the nature of the astigmatism (i.e., symmetric 'bow tie' vs asymmetric or 'irregular' astigmatism) and identifies the ...

Using measurements obtained by corneal topography, patients with symmetric bow tie corneal astigmatism can be placed into one of four categories for planning purposes. These categories are shown ...

Corneal topography is an indispensable tool and plays a critical role in the practice of refractive surgery. In corneal refractive surgery, corneal topography is used preoperatively to detect ...

Valley Optometry Eyecare has come up with a new non-surgical way of vision correction. The ortho-k treatment is now available ...

At Houston LASIK & Eye, the decision between LASIK and EVO ICL isn't left to chance. During comprehensive consultations, advanced diagnostic technology assesses corneal thickness, prescription ...

AIMS To quantitatively evaluate the changes in corneal irregular astigmatism after laser in situ keratomileusis (LASIK) in relation to the amount of laser ablation. METHODS In 189 eyes of 116 patients ...

Corneal topography was not available and thus regularity of astigmatism was not included in the study. While keratometry is a required assessment prior to cataract surgery, refraction is used more ...

The Acuvue Oasys Max 1-day lens for astigmatism is now available in the U.S. and Canada, according to J&J Vision, while a non-multifocal version is expected to debut this summer.

Surfaces with high roughness values have been shown to introduce voids at the bonded interface, leading to bonding failures when roughness exceeds a critical threshold. In scientific research, surface ...

BOOK EXCERPT ‘The day begins with endings’: A new book of poetry about topography, time, and shifting identities An excerpt from ‘Lone Pine: Poems’, by Siddhartha Menon.