Results 21 to 30 of about 785 (184)

Use of prisms in ophthalmology: a review Part 1. The use of prisms in strabismus: historical background, methodologies and their outcomes

open access: yesJournal of Ophthalmology, 2020
The paper points to the principle of prisms: if a prism is placed in front of the strabismic eye, images of objects impinging upon the peripheral retina are projected to the central pit, which creates optimal conditions for cooperation of both eyes and ...
V.I. Serdiuchenko
doaj   +1 more source

Conjugate horizontal gaze paresis – what tactics to choose

open access: yesОфтальмохирургия, 2023
Purpose. To analyze the success of using prisms in conjugate horizontal gaze paresis compared to other treatment methods. Material and methods. The study involved 30 patients with conjugate horizontal gaze paresis. The average age of patients at the time
G.V. Gladysheva   +3 more
doaj   +1 more source

Prismatic correction in the presence of acutely acquired esotropia with diplopia

open access: yesОфтальмохирургия, 2021
Purpose. To analyze changes in binocular vision functions in patients with acutely acquired esotropia after preoperative correction by prisms. Material and methods. The study included 16 patients with acutely acquired esotropia with diplopia.
G. V. Gladysheva   +6 more
doaj   +1 more source

Possibilities of prismatic correction in the treatment of congenital horizontal nystagmus

open access: yesОфтальмохирургия, 2021
Purpose. Analysis the effectiveness of prismatic correction in the treatment of congenital horizontal nystagmus. Material and methods. The study included 20 patients with congenital horizontal nystagmus.
G. V. Gladysheva   +6 more
doaj   +1 more source

High-Transmission Neutron Optical Devices Utilizing Micro-Machined Structures

open access: yesQuantum Beam Science, 2023
Neutrons are a powerful probe in material science with unique penetrating abilities. A major challenge stems from the fact that neutron optical devices are limited to refractive indices on the order of n≈1±10−5.
Connor Kapahi   +8 more
doaj   +1 more source

Fresnel Rhomb And Other Devices For Handling And Teaching Polarization: Inexpensive Design [PDF]

open access: yes, 2003
We demonstrate a pair of 90-45-45 prisms from binoculars appropriately attached to serve as Fresnel rhomb, i.e. achromatic quarter-wave plate. One and two Dove prisms with metallic reflection instead of TIR can work as half-wave plate and polarization ...
Sarkissian, H. V.   +2 more
core   +1 more source

Anti-Fatigue Glasses Based on Microprisms for Preventing Eyestrain

open access: yesSensors, 2022
Although microprisms have become an important medical means of strabismus treatment, related research concerning the design, fabrication, and testing of microprismatic glasses for preventing eyestrain has rarely been reported.
Zichun Le   +7 more
doaj   +1 more source

Light diffraction by concentrator Fresnel lenses [PDF]

open access: yes, 2014
S.A686-A704Fresnel lenses are widely used in concentrating photovoltaic (CPV) systems as primary optical elements focusing sunlight onto small solar cells or onto entrance apertures of secondary optical elements attached to the solar cells.
Hornung, Thorsten, Nitz, Peter
core   +1 more source

Conservative and Surgical Management of Unilateral and Bilateral Internuclear Ophthalmoplegia (INO)—A Retrospective Analysis

open access: yesBritish and Irish Orthoptic Journal, 2022
Aim: To report the outcomes of the natural progression and ophthalmic treatment of patients reviewed in a tertiary hospital trust with unilateral or bilateral internuclear ophthalmoplegia.
Joshua Simmons, Martin Rhodes
doaj   +1 more source

Restoration of binocular single vision following multiple treatments for longstanding bilateral internuclear ophthalmoplegia and unilateral third nerve paresis in Chiari II malformation

open access: yesBritish and Irish Orthoptic Journal, 2012
Aim:  To present a patient with longstanding bilateral internuclear ophthalmoplegia and unilateral third nerve paresis in Chiari II malformation who achieved binocular single vision with the help of prisms following two surgical and two botulinum toxin ...
Gemma E. Arblaster, John P. Burke
doaj   +1 more source

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