by Dev1 | Sep 6, 2023 | Bookmarking Post, CONTACT LENSES
Bookmark Please login to bookmarkClosePlease loginMake the back surface of the RGP toric if the corneal astigmatism is ≥2.00D. Next you need to decide if you want the front surface to be toric not. If the residual astigmatism after placing the RGP on the eye is...
by Dev1 | Sep 6, 2023 | Bookmarking Post, CONTACT LENSES
Bookmark Please login to bookmarkClosePlease loginBack Surface Toric RGPs have toricity on their back surface/ base curve. They should be used for patients with >2.50D of corneal toricity in order to follow the shape of the cornea and prevent the RGP from rocking...
by Dev1 | Sep 6, 2023 | Bookmarking Post, CONTACT LENSES
Bookmark Please login to bookmarkClosePlease loginFront Surface Toric RGPs have a spherical back surface and toricity on the front surface. They are rarely used because it is difficult to stabilize an RGP with a spherical back...
by Dev1 | Sep 6, 2023 | Bookmarking Post, CONTACT LENSES
Bookmark Please login to bookmarkClosePlease loginThe Wetting Angle can be used to determine how well a contact lens remains wet, or in other words, how likely the contact lens is to stay dry. A low wetting angle (less than 90°) means the contact is able to wet well...
by Dev1 | Sep 6, 2023 | Bookmarking Post, CONTACT LENSES
Bookmark Please login to bookmarkClosePlease loginWarpage occurs when the RGP is distorted both when it is on and off the cornea. You will measure irregular astigmatism with keratometry or topography both when the RGP is on and off of the eye. It can be confirmed with...
by Dev1 | Sep 6, 2023 | Bookmarking Post, CONTACT LENSES
Bookmark Please login to bookmarkClosePlease loginFlexure occurs when an RGP becomes distorted while it is on the cornea, but assumes its normal shape when it is no longer on the cornea. Therefore, you will measure irregular astigmatism with keratometry or topography...
