Lens opacities were assessed using standard methods of lens photography and graded using the Lens Opacities Classification System (LOCS) II.
The design method of reflective lens using spherical Fresnel surface is discussed.
We present a method of transmitter lens design dedicated for light distribution shaping on a curved and asymmetric target.
To test a new method of intraocular lens (IOL) calculation after corneal refractive surgery using Scheimpflug imaging (Pentacam HR) and partial coherence interferometry (PCI) (IOLMaster) that does not require historical data; that is, the Schuster/Schanzlin-Thomas-Purcell (SToP) IOL calculator.
Lister discovered a method of combining lenses that greatly improved image resolution by eliminating certain chromatic and spherical aberrations.
Fifteen eyes (7.14%) showed superficial keratitis, which improved 3 7 days after terminating the use of OK lenses, without the need for drug administration and the OK lens were used continuously after re-education the taking care methods of the lens.
To evaluate and compare published methods of intraocular lens (IOL) power calculation after myopic laser refractive surgery in a large, multi-surgeon study.
Then it is put forward that the designing scheme and the computer aided design (CAD) method of main single lens of the domestic space electron beam gun with equal-diameter three-cylinder simple lens, and the flowing-pipe way of calculating the space charge density of the main lens area in the electron gun is analyzed.
That could be down to the fact that most street-style photographers during fashion week have wanted to, but also had to, adopt Tommy Ton's method of shooting: longer lens, pulled back, more candid than a straight up shot so you can't always tell you're being photographed.
To evaluate the validity of a keratometry (K -independent method of estimating effective lens position (ELP) before phacoemulsification cataract surgery.
