Results 11 to 20 of about 308,967 (294)
Lens Thickness Changes among Schoolchildren in Taiwan
Investigative Opthalmology & Visual Science, 2009 To explore the possible influence of ocular growth, refractive error and age on the crystalline lens in school-age children.A Taiwan nationwide survey of myopia performed in 2006 was used to determine the prevalence and severity of myopia and the changes in ocular components.
Yung-Feng, Shih +2 more
openaire +4 more sources
Lens thickness assessment: anterior segment optical coherence tomography versus A-scan ultrasonography [PDF]
International Journal of Ophthalmology, 2015 AIM: To assess lens thickness measurements with anterior segment-optical coherence tomography (AS-OCT) in comparison with A-scan ultrasonography (A-scan US). METHODS: There were 218 adult subjects (218 eyes) aged 59.2±9.2y enrolled in this prospective
Nikoo Hamzeh +5 more
doaj +1 more source
Response to recharge variation of thin rainwater lenses and their mixing zone with underlying saline groundwater [PDF]
Hydrology and Earth System Sciences, 2012 In coastal zones with saline groundwater, fresh groundwater lenses may form due to infiltration of rain water. The thickness of both the lens and the mixing zone, determines fresh water availability for plant growth.
S. Eeman +4 more
doaj +1 more source
Lens regeneration in situ using hESCs-derived cells —similar to natural lens
iScience, 2023 Summary: Lens itself has limited regeneration functionality, thus we aimed to create regenerated lens with biological function to treat cataracts rather than the intraocular lens used in cataract surgery.
Xinyi Chen +9 more
doaj +1 more source
Scleral contact lens thickness profiles: The relationship between average and centre lens thickness [PDF]
Contact Lens and Anterior Eye, 2019 To develop a methodology to reliably determine the thickness profile of scleral contact lenses and examine the relationship between the centre and average lens thickness for a range of lens designs and back vertex powers.High-resolution images of 37 scleral trial lenses (Epicon LC, Rose K2 XL and ICD 16.5) were captured using an optical coherence ...
Vincent, Stephen J +3 more
openaire +3 more sources
Is myopia accelerated in type 1 diabetes mellitus children? Analyses from the ocular parameters
BMC Ophthalmology, 2023 Background This study compares the ocular biometry with or without myopia in children with type 1 diabetes mellitus (T1DM) and healthy children in China to analyse the difference between myopia in T1DM and healthy children.
Ying Xiao +3 more
doaj +1 more source
, 2006 The response of the ``perfect lens'', consisting of a slab of lossless material of thickness $d$ with $\epsilon=\mu=-1$ at one frequency $\omega_0$ is investigated.
Boardman +28 more
core +2 more sources
Optical Design of a Miniaturized 10× Periscope Zoom Lens for Smartphones
Micromachines, 2023 The size of the optical zoom system is important in smartphone camera design, especially as it governs the thickness of the smartphone. We present the optical design of a miniaturized 10× periscope zoom lens for smartphones.
Wen-Shing Sun +2 more
doaj +1 more source
PLoS ONE, 2017 The aim of this study was to investigate changes in the anterior segment of the eye after cycloplegia. A biometer combined with swept-source optical coherence tomography (SSOCT) was used for measurements.
Tomoaki Higashiyama +2 more
doaj +1 more source
“In situ” corneal and contact lens thickness changes with high resolution OCT [PDF]
, 2012 Purpose: To show the utility of high resolution spectral domain optical coherence tomography (HR SOCT) for the in situ evaluation of epithelial, stromal and contact lens (CL) thickness changes under closed-eye conditions without lens removal. Settings:
Cerviño, Alejandro +5 more
core +1 more source