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Editor’s Choice
Essilor eyedrive spectacle lenses and trendy dioptric frames
Introducing Essilor Eyedrive eyeglass lenses
Menicon one-day contact lenses – Miru 1day Flat Pack
Revolutionary soft contact lenses for one-day use – Miru 1 day Menicon Flat Pack.
The best solution for presbyopia – Varilux progressive spectacle lenses
Vision is clear at distance, medium distance and near.
Articles
Anatomy of the eye
Eye cavity – orbit
The eye cavity or orbit (lat. orbit) is bounded by bones that surround the eye from all sides except the front, thus mechanically protecting it. Bones that border the eye cavity:frontal bone - roofnasal bone - mediallycheek bone -laterallyupper jaw - bottom In the...
Eye chambers
Eye chambers or chambers are spaces in the eye filled with aqueous humor.We divide them into the front eye chamber ( camera bullbi anterior ), which is bounded in the front by the cornea, and the back by the iris and the lens, and the back eye chamber ( camera bullbi...
Cornea
Cornea (Latin cornea ) is the front transparent part of the outer membrane of the eye and is also the first optical medium that light rays reach on the way through the eye. Its role is refraction of light, i.e. refraction of the eye. It is transparent like glass due...
Anatomy of the eye
Cornea Cornea (lat. cornea) is the front transparent part of the outer eye membrane and is also the first optical medium that light rays reach on the way through the eye. White eye The sclera or sclera (lat. sclera) is a white, opaque membrane that forms the larger,...
Articles
Diseases and errors of the eye
Elderly farsightedness – Presbyopia
The word presbyopia (lat. presbyopia) in Greek "presbus" means an old person. Presbyopia is a condition associated with age and a decline in the maximum accommodation power of the eye due to changes in the refractive system of the eye. As the eye lens in presbyopia...
Normal eye – Emetropia (lat. Emetropia)
Emmetropia or normal-sighted eye means the refractive state of the eye in which the far point (Punctum remotum) is at infinity, the point of the clearest vision at a distance. In an emmetropic person, the image of the observed object is projected directly onto the...
Astigmatism (lat. Astigmatismus)
The word astigmatism (lat. Astigmatismus) means without a point. Astigmatism is an eye error in which the optical system of the eye has different refractive powers in different meridians. Astigmatism is an eye error in which the optical system of the eye has different...
Farsightedness (lat. Hypermetropia)
The word hypermetropia (lat. Hypermetropia ) consists of two words: hyper - over, over, and metropia - looking to measure. Hypermetropia, farsightedness, is a refractive anomaly (error of the eye) due to which light rays focus behind the retina, therefore creating a...
Articles
Physics of the eye
Binocular vision
Beings with two eyes receive two images that merge into one visual sensation. The consequence of binocular viewing is the measurement of absolute and relative distances. Because the eyes are spaced apart, each eye forms a different image of the same object, at a...
The discerning power of the eye
The term resolving power of an optical instrument, including the eye, means the ability to obtain two separate images from two different point sources.The eye sees two point objects separated if the image of each individual point falls on another cone. If the images...
The eye and physics
A normal eye sees clearly if it creates images on the retina. Since the distance of the retina from the entrance surface of the cornea is constant, it is necessary for the eye to increase its convergence (strength) the more the object it observes is closer. Thus, the...
What is polarization?
Polarization is a property of electromagnetic waves related to the direction of oscillation of the field. Linear or complete polarization is a polarization in which the electric field vector constantly oscillates in the same plane. When scattering, light is polarized...
Articles
Interpretation of findings
Prescription for glasses
Field of view
An example of an orderly finding of the visual field according to Goldman. The findings for the right and left visual fields are shown.
Prescription for contact lenses
Parameters Right eye (VOD) Left eye (VOS) Diopter (PWR) -1.50 -2.50 Cylindrical diopter (CYL) -1.25 -1.75 Base of curvature (BC) 8.6 8.7 Diameter (DIA) 14.00 14.00 Axis cylinder 180° 170° Addition (ADD) +1.50 +1.50 Color Blue Blue Manufacturer Contact lens...
Education
Editor’s Choice
Essilor eyedrive spectacle lenses and trendy dioptric frames
Introducing Essilor Eyedrive eyeglass lenses
Menicon one-day contact lenses – Miru 1day Flat Pack
Revolutionary soft contact lenses for one-day use – Miru 1 day Menicon Flat Pack.
The best solution for presbyopia – Varilux progressive spectacle lenses
Vision is clear at distance, medium distance and near.
Anatomy and physics of the eye
Editor’s Choice
Essilor eyedrive spectacle lenses and trendy dioptric frames
Introducing Essilor Eyedrive eyeglass lenses
Menicon one-day contact lenses – Miru 1day Flat Pack
Revolutionary soft contact lenses for one-day use – Miru 1 day Menicon Flat Pack.
The best solution for presbyopia – Varilux progressive spectacle lenses
Vision is clear at distance, medium distance and near.
Diseases and errors of the eye
Editor’s Choice
Essilor eyedrive spectacle lenses and trendy dioptric frames
Introducing Essilor Eyedrive eyeglass lenses
Menicon one-day contact lenses – Miru 1day Flat Pack
Revolutionary soft contact lenses for one-day use – Miru 1 day Menicon Flat Pack.
The best solution for presbyopia – Varilux progressive spectacle lenses
Vision is clear at distance, medium distance and near.
Interpretation of findings
Editor’s Choice
Essilor eyedrive spectacle lenses and trendy dioptric frames
Introducing Essilor Eyedrive eyeglass lenses
Menicon one-day contact lenses – Miru 1day Flat Pack
Revolutionary soft contact lenses for one-day use – Miru 1 day Menicon Flat Pack.
The best solution for presbyopia – Varilux progressive spectacle lenses
Vision is clear at distance, medium distance and near.
