Keywords: Astigmatism, Dioptric
power, Keratometry, Pars plana vitrectomy, Suture less,
to give the symmetric (independent of L) dioptric
The optical prescription for best photopic acuity at the test distance and the level of uniform convergent lens blur (i.e., positive-sphere dioptric
power) used to induce the 20/40 (2.0 arcmin) and 20/30 (1.5 arcmin) acuity levels were implemented with an AO Master Phoroptor (AO Reichert Scientific Instruments, Buffalo, New York).
In 1637, he published his Geometry, Dioptric
, and Meteors, which were prefaced with his even more famous Discourse on the Method of Rightly Conducting the Reason and Seeking for Truth in the Sciences.
If this face lies exactly perpendicular to the incoming signal, a sharp vertical line appears on the crystal face and can be brought into congruence with the dioptric
In the case of Ion Barbu, from whose modernist poetry Perry selects "Dioptrie" ("Dioptric
") and, of course, "Joc secund" ("Counter Play"), what attracts him is the Romanian poet's "multiplaned perception of reality." Interestingly, Perry sees in this type of vision a specific feature of the Romanian mind: the ambiguity of double meaning, the perception of converging but distinct planes of reality.
Eyepieces Wide-field, adjustable eyepieces with dioptric
correction are particularly recommended for eyeglass wearers.
These compact and light weight (about 30 ozs.) models have internal focusing and central dioptric
compensation mechanisms that help make them completely water tight to a pressure depth of 4.25 lb./square inch.
To bend and magnify rays to form a single plane of intense light, catadioptric prisms refract and reflect; dioptric
prisms and center bull's-eye lens refract.
Also, some IOLs, especially in half dioptric
powers, are not available in our setup, so in some cases the most accurate IOL was not inserted.
The refraction data were converted to the spherical equivalent, which was calculated using the spherical diopter (D) plus one half of the cylindrical dioptric