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Trial frame and lenses. A dispensing optician is anyone who prepares, fits, and dispenses prescription lenses, spectacles, eyeglasses, contact lenses, or any other type of vision-correcting optical device to the intended user. They may interpret optical prescriptions issued by an ophthalmologist, optometrist, or physician for the lab optician ...
An improvised pinhole has a similar but better effect. The same principle has also been applied as an alternative to corrective lenses: a screen of pinholes is mounted on an eyeglass frame and worn as pinhole glasses. Differential diagnosis: pinhole worsen vision: Macular diseases, [5] central lens opacities [6] Vision static with pinhole ...
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Ophthalmic medical practitioner; Ophthalmic technician; Ophthalmic trial frame; Ophthalmology in the medieval Islamic world; Ophthalmotrope; Optic cup (anatomical) Optography; Orbital emphysema; Orthophoria; Osteo-odonto-keratoprosthesis
Retrieved from "https://en.wikipedia.org/w/index.php?title=Trial_frame&oldid=1083136171"This page was last edited on 17 April 2022, at 07:12 (UTC). (UTC).
Jackson cross cylinder of +/- 0.25 diopter. Jackson cross cylinder is a single low power lens, which is a combination of a plus cylinder and a minus cylinder of equal power with axis perpendicular to each other, with a handle placed between the two axes at 45 degrees.
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