Astigmatic eye hi-res stock photography and images

Vision of Normal eye and Astigmatic Stock Vector

RFKD47B0–Vision of Normal eye and Astigmatic

Various possible corrections on an astigmatic eye: spectacle lenses, external lenses. Stock Photo

RF2JKWR8W–Various possible corrections on an astigmatic eye: spectacle lenses, external lenses.

Astigmatism. Eye anatomy. Lens, Cornea and Focal points on Retina in normal and astigmatic eye. Cross section of a Human eyeball. Diagram for educatio Stock Vector

RF2XCPHXW–Astigmatism. Eye anatomy. Lens, Cornea and Focal points on Retina in normal and astigmatic eye. Cross section of a Human eyeball. Diagram for educatio

Medical illustration of the symptoms of astigmatism Stock Vector

RF2AHNW9A–Medical illustration of the symptoms of astigmatism

RF2K2Y47D–Eyesight Eye Care

Glasses and Snellen's chart. Test eye examination. Optician, ophthalmologist concept Stock Photo

RF2H7XKY1–Glasses and Snellen's chart. Test eye examination. Optician, ophthalmologist concept

Glasses on wooden table against eye test chart Stock Photo

RF2K2XF8A–Glasses on wooden table against eye test chart

Astigmatic eyesight vision. Seeing double. Dark night shot with full moon with double edges, the way eyes with astigmatic vision Stock Photo

RME8CCP9–Astigmatic eyesight vision. Seeing double. Dark night shot with full moon with double edges, the way eyes with astigmatic vision

White optometry chart on the wooden wall Stock Photo

RF2K2XE8M–White optometry chart on the wooden wall

Corrective glasses for reading on desk, female silhouette at bac Stock Photo

RFJWF4WX–Corrective glasses for reading on desk, female silhouette at bac

Girl holds glasses in her hands at a great distance from her face. Face out of focus Stock Photo

RF2BK7FC4–Girl holds glasses in her hands at a great distance from her face. Face out of focus

Closeup face African man rubbing eyes having vision problem Stock Photo

RF2C15AMN–Closeup face African man rubbing eyes having vision problem

Beautiful human eyes and eyebrows. Pretty dark skin woman eyes. Stock Vector

RF2K1PHMP–Beautiful human eyes and eyebrows. Pretty dark skin woman eyes.

eyeball illlustration displaying astigmatic using beams & lenses Stock Photo

RFW89G8T–eyeball illlustration displaying astigmatic using beams & lenses

Ophthalmologist with trial frame for selection of complex astigmatic glasses Stock Photo

RF2M8506T–Ophthalmologist with trial frame for selection of complex astigmatic glasses

Tablets, capsules for vision. Vitamins in the form of hearts with glasses on a white background. Diopter lenses, myopia, farsightedness. Ophthalmologist, optometrist, eye health. High quality photo Stock Photo

RF2MMY5BC–Tablets, capsules for vision. Vitamins in the form of hearts with glasses on a white background. Diopter lenses, myopia, farsightedness. Ophthalmologist, optometrist, eye health. High quality photo

Eye test chart - white optometry chart on the wooden wall Stock Photo

RF2JDE1JJ–Eye test chart - white optometry chart on the wooden wall

woman puts on contact lenses for vision close-up on a dark background, macro photo of contact lenses, astigmatic eyes, colored lenses Stock Photo

RF2XFJJRN–woman puts on contact lenses for vision close-up on a dark background, macro photo of contact lenses, astigmatic eyes, colored lenses

$Astigmatic Eye and Normal Eye. Astigmatism, refractive or refraction error. Multiple Focal point. Stock Vector$

RF2TCW726–Astigmatic Eye and Normal Eye. Astigmatism, refractive or refraction error. Multiple Focal point.

Normal vision and Impaired vision with astigmatism in front view. Stock Vector

RFKD47B4–Normal vision and Impaired vision with astigmatism in front view.

Astigmatic eye (ovoid and non-spherical cornea) with the formation of an image. Stock Photo

RF2JKWRAH–Astigmatic eye (ovoid and non-spherical cornea) with the formation of an image.

Young man with thick glasses on background with letters for checking eyesight Stock Photo

RFF6D3B0–Young man with thick glasses on background with letters for checking eyesight

Businessman working at office desk, he is staring at the laptop screen close up and holding his glasses, workplace vision problems Stock Photo

RFK4DFH6–Businessman working at office desk, he is staring at the laptop screen close up and holding his glasses, workplace vision problems

Zoom in on life. A cropped shot of eyeglasses in front of a snellen chart. Stock Photo

RF2HT526G–Zoom in on life. A cropped shot of eyeglasses in front of a snellen chart.

RF2H3TJMF–Glasses and Snellen's chart. Test eye examination. Optician, ophthalmologist concept

RF2GP841N–Young man with thick glasses on background with letters for checking eyesight

RME8CCPK–Astigmatic eyesight vision. Seeing double. Dark night shot with full moon with double edges, the way eyes with astigmatic vision

Eyes test chart with eyeglasses Stock Photo

RF2K2XE8A–Eyes test chart with eyeglasses

Beautiful brown eyes of dark skin human. Pretty woman sight. Vector illustration Stock Vector

RF2WE69PH–Beautiful brown eyes of dark skin human. Pretty woman sight. Vector illustration

RFJEWRTC–eyeglasses pupil

An ophthalmologist selects glasses for a woman with a set of trial spectacle lenses. A patient at an ophthalmologist's appointment. Stock Photo

RM2JJDPYB–An ophthalmologist selects glasses for a woman with a set of trial spectacle lenses. A patient at an ophthalmologist's appointment.

RF2K2AX0W–Zoom in on life. A cropped shot of eyeglasses in front of a snellen chart.

RF2M6KF51–White optometry chart on the wooden wall

RF2M850AH–Ophthalmologist with trial frame for selection of complex astigmatic glasses

RF2MMY5CW–Tablets, capsules for vision. Vitamins in the form of hearts with glasses on a white background. Diopter lenses, myopia, farsightedness. Ophthalmologist, optometrist, eye health. High quality photo

Glasses with corrective lenses on table against eye test chart Stock Photo

RF2JDE1DH–Glasses with corrective lenses on table against eye test chart

RF2XFJJMB–woman puts on contact lenses for vision close-up on a dark background, macro photo of contact lenses, astigmatic eyes, colored lenses

Glasses with corrective lenses on wooden table against eye test chart Stock Photo

RF2JDHB8R–Glasses with corrective lenses on wooden table against eye test chart

Check angles of blue eye with protractor. Stock Vector

RFKD47C6–Check angles of blue eye with protractor.

RF2JKWR8X–Astigmatic eye (ovoid and non-spherical cornea) with the formation of an image.

Eye Chart and Glasses on the wooden table.Eyesight Eye Care. Stock Photo

RF2JF3R51–Eye Chart and Glasses on the wooden table.Eyesight Eye Care.

RFK4DFG5–Businessman working at office desk, he is staring at the laptop screen close up and holding his glasses, workplace vision problems

RFA766P2–Cases for contact lenses

RF2H7XKY5–Glasses and Snellen's chart. Test eye examination. Optician, ophthalmologist concept

The home medical adviser, a popular work on the treatment of disease . rvature of theeyeball in the astigmatic eye is greater in one meridian than in theopposite; in other words, the front of the eyeball is not regularlyspherical, but bulges along a certain line or meridian, while thecurvature is flattened or normal in the other meridian. Eor instance,if two imaginary lines were drawn, one vertically and the other hori-zontally across the front of the eyeball, intersecting in the center ofthe pupil, they would represent the principal meridians—the verticaland the horizontal. As a rule the meri Stock Photo

RM2AN03RF–The home medical adviser, a popular work on the treatment of disease . rvature of theeyeball in the astigmatic eye is greater in one meridian than in theopposite; in other words, the front of the eyeball is not regularlyspherical, but bulges along a certain line or meridian, while thecurvature is flattened or normal in the other meridian. Eor instance,if two imaginary lines were drawn, one vertically and the other hori-zontally across the front of the eyeball, intersecting in the center ofthe pupil, they would represent the principal meridians—the verticaland the horizontal. As a rule the meri

woman holding spectacles and rubbing the bridge of her nose Stock Photo

RF2KA7XRW–woman holding spectacles and rubbing the bridge of her nose

Myopia word cloud concept. Vector illustration Stock Vector

RFKC36Y6–Myopia word cloud concept. Vector illustration

RFR1TJKJ–Astigmatic glasses icon. Simple illustration of astigmatic glasses vector icon for web

The concept of ophthalmology. The plates contain concave lenses, convex lenses, cylindrical lenses for measuring vision. Stock Photo

RF2H4MGDP–The concept of ophthalmology. The plates contain concave lenses, convex lenses, cylindrical lenses for measuring vision.

RF2M6KF4H–Eyes test chart with eyeglasses

Ophthalmologist with trial frame for selection of complex astigmatic glasses. Selection of lenses for glasses concept Stock Photo

RF2M865JM–Ophthalmologist with trial frame for selection of complex astigmatic glasses. Selection of lenses for glasses concept

RF2MN6KPR–Tablets, capsules for vision. Vitamins in the form of hearts with glasses on a white background. Diopter lenses, myopia, farsightedness. Ophthalmologist, optometrist, eye health. High quality photo

RF2R5YHY4–Ophthalmologist with trial frame for selection of complex astigmatic glasses

RF2XFJJYH–woman puts on contact lenses for vision close-up on a dark background, macro photo of contact lenses, astigmatic eyes, colored lenses

RF2NHT0MF–Tablets, capsules for vision. Vitamins in the form of hearts with glasses on a white background. Diopter lenses, myopia, farsightedness. Ophthalmologist, optometrist, eye health. High quality photo

Astigmatic eye (ovoid and non-spherical cornea) inducing distorted vision. Stock Photo

RF2JKWTC8–Astigmatic eye (ovoid and non-spherical cornea) inducing distorted vision.

RFKH45FY–Businessman working at office desk, he is staring at the laptop screen close up and holding his glasses, workplace vision problems

RF2H3TJMJ–Glasses and Snellen's chart. Test eye examination. Optician, ophthalmologist concept

$Manual of ophthalmology . Fig. 27. Fig. 28. Astigmatism.—This is defined as the condition in which rays oflight from a point, passing through a lens or series of lenses, do notfocus at a point, or astigmatism is that condition of an eye in whichthere are two principal meridians, of greatest and least ametropia,each having a different focal plane, usually at right angles to eachother. As rays of light in an astigmatic eye are not refracted equallyin all meridians, the resulting image of a point becomes an oval, aline, or a circde. (See fig. 29). Astigmatism is the condition of the. Fig. 29.—Ray Stock Photo$

RM2AWJCFF–Manual of ophthalmology . Fig. 27. Fig. 28. Astigmatism.—This is defined as the condition in which rays oflight from a point, passing through a lens or series of lenses, do notfocus at a point, or astigmatism is that condition of an eye in whichthere are two principal meridians, of greatest and least ametropia,each having a different focal plane, usually at right angles to eachother. As rays of light in an astigmatic eye are not refracted equallyin all meridians, the resulting image of a point becomes an oval, aline, or a circde. (See fig. 29). Astigmatism is the condition of the. Fig. 29.—Ray

RFKC36YA–Myopia word cloud concept. Vector illustration

RFR1TJKH–Astigmatic eyeglasses icon. Simple illustration of astigmatic eyeglasses vector icon for web

RF2H4MGDR–The concept of ophthalmology. The plates contain concave lenses, convex lenses, cylindrical lenses for measuring vision.

RF2XFJJNM–woman puts on contact lenses for vision close-up on a dark background, macro photo of contact lenses, astigmatic eyes, colored lenses

RF2NH6T94–Tablets, capsules for vision. Vitamins in the form of hearts with glasses on a white background. Diopter lenses, myopia, farsightedness. Ophthalmologist, optometrist, eye health. High quality photo

RF2JKWTA3–Astigmatic eye (ovoid and non-spherical cornea) inducing distorted vision.

RF2H3TJM2–Glasses and Snellen's chart. Test eye examination. Optician, ophthalmologist concept

$. Physiological optics : being an essay contributed to the American encyclopedia of ophthalmology . nted for byreason of the anatomical structure of the eyeball and of the orbit, andby the action of the lids and the insertion and operation of the extra-ocular muscles. 106. Fig. 70 is a presentation of the curvatures of a centrally non-astigmatic eye at various points of the cornea. After having measuredwith the aid of the ophthalmometer the refraction of the two principalmeridians at the point of intersection of the visual line with the 140 PHYSIOLOGICAL OPTICS cornea, the eye is caused to fix Stock Photo$

RM2CE7DWJ–. Physiological optics : being an essay contributed to the American encyclopedia of ophthalmology . nted for byreason of the anatomical structure of the eyeball and of the orbit, andby the action of the lids and the insertion and operation of the extra-ocular muscles. 106. Fig. 70 is a presentation of the curvatures of a centrally non-astigmatic eye at various points of the cornea. After having measuredwith the aid of the ophthalmometer the refraction of the two principalmeridians at the point of intersection of the visual line with the 140 PHYSIOLOGICAL OPTICS cornea, the eye is caused to fix

RFKC36YB–Myopia word cloud concept. Vector illustration

RFR1TJKN–Astigmatic spectacles icon. Simple illustration of astigmatic spectacles vector icon for web

RF2H4MGDM–The concept of ophthalmology. The plates contain concave lenses, convex lenses, cylindrical lenses for measuring vision.

RF2JKWRA8–Various possible corrections on an astigmatic eye: spectacle lenses, external lenses.

Eye doctor, oculist in clinic. Optometrist holds glasses to try on Stock Photo

RF2H7XKW8–Eye doctor, oculist in clinic. Optometrist holds glasses to try on

. The Ontario high school physics. are spherical, but sometimesthe curvature is greater in one plane than inothers. If a diagram, as shown in Fig. 418, bedrawn about one foot in diameter and viewedfrom a distance of about 15 feet an astigmaticeye will see some of the radii distinctly, whilethose in a perpendicular direction will beblurred. In most cases the vertical section ofthe cornea of an astigmatic eye is more curvedthan a horizontal section. The proper spectaclesto use are those in which one surface of the lensis a part of a cylinder instead of a sphere. 412. The Photographic Camera. The Stock Photo

RM2CEG973–. The Ontario high school physics. are spherical, but sometimesthe curvature is greater in one plane than inothers. If a diagram, as shown in Fig. 418, bedrawn about one foot in diameter and viewedfrom a distance of about 15 feet an astigmaticeye will see some of the radii distinctly, whilethose in a perpendicular direction will beblurred. In most cases the vertical section ofthe cornea of an astigmatic eye is more curvedthan a horizontal section. The proper spectaclesto use are those in which one surface of the lensis a part of a cylinder instead of a sphere. 412. The Photographic Camera. The

RFR2B5NH–Astigmatic spectacles icon. Simple illustration of astigmatic spectacles vector icon for any design orange

Eye: comparison between a normal eye and a myopic, hyperopic, astigmatic, presbyopic eye. Stock Photo

RF2JKWT7H–Eye: comparison between a normal eye and a myopic, hyperopic, astigmatic, presbyopic eye.

Eye doctor, oculist in clinic. Optometrist holds glasses to try on. Web banner copy space image Stock Photo

RF2H3TJHX–Eye doctor, oculist in clinic. Optometrist holds glasses to try on. Web banner copy space image

$. A text-book of human physiology . two focal lines, the upright ellipsebecoming first a circle and then a procumbent ellipse (Fig. 219). In an astigmatic eye, therefore, a homocentric ^ l)undle of rays cannot bebrought to a single focus. When the eye is adjusted for the most refractivemeridian, the images on the retina are all drawn out in tb(> direction of the • That is. rays proceeding from a common point or rays which pass through a commonpoint when prolonged.32 524 VISION first focal line; when it is adjusted for the least refractive meridian theretinal images are drawn out in the dire Stock Photo$

RM2CE6PHX–. A text-book of human physiology . two focal lines, the upright ellipsebecoming first a circle and then a procumbent ellipse (Fig. 219). In an astigmatic eye, therefore, a homocentric ^ l)undle of rays cannot bebrought to a single focus. When the eye is adjusted for the most refractivemeridian, the images on the retina are all drawn out in tb(> direction of the • That is. rays proceeding from a common point or rays which pass through a commonpoint when prolonged.32 524 VISION first focal line; when it is adjusted for the least refractive meridian theretinal images are drawn out in the dire

RFR5BMK6–Astigmatic eyeglasses icon. Simple illustration of astigmatic eyeglasses vector icon for any design green

RF2JKWT7A–Eye: comparison between a normal eye and a myopic, hyperopic, astigmatic, presbyopic eye.

RMHGP037–EYE LASER SURGERY

RF2HAEJAJ–Eye doctor, oculist in clinic. Optometrist holds glasses to try on. Web banner copy space image

$The refraction of the eye; including a complete treatise on opthalmometry; a clinical text-book for students and practitioners . Fi.. 66. — Shmviiic focuses of the chief meridians in simple myopic astigmatism of2 I), fm- distant vision and for near vision at the age of forty-five years. The 1 I). of presbyopia neutralizes 1 D. of the myopicastigmatism in the vertical meridian (leaving 1 D. of it uncor-rected), and at the same time renders the horizontal meridian(which is emmetropic) presbyopic, or in effect hypermetropic1 D. Thus the eye for reading purposes is mixed astigmatic,since it focuss Stock Photo$

RM2AKRH7K–The refraction of the eye; including a complete treatise on opthalmometry; a clinical text-book for students and practitioners . Fi.. 66. — Shmviiic focuses of the chief meridians in simple myopic astigmatism of2 I), fm- distant vision and for near vision at the age of forty-five years. The 1 I). of presbyopia neutralizes 1 D. of the myopicastigmatism in the vertical meridian (leaving 1 D. of it uncor-rected), and at the same time renders the horizontal meridian(which is emmetropic) presbyopic, or in effect hypermetropic1 D. Thus the eye for reading purposes is mixed astigmatic,since it focuss

Young woman with glasses. Ophthalmology, glasses shop concept background Stock Photo

RF2H3TJD1–Young woman with glasses. Ophthalmology, glasses shop concept background

RF2J6FK7T–Eye doctor, oculist in clinic. Optometrist holds glasses to try on

RFR2B5NA–Astigmatic eyeglasses icon. Simple illustration of astigmatic eyeglasses vector icon for any design orange

RMHGP039–EYE LASER SURGERY

$. On the anomalies of accommodation and refraction of the eye, witha preliminary essay on physiological dioptrics. tory results only when, together with the successive determinationof the farthest points of distinct vision in the two principal meri-dians, the condition of accommodation of the eye underwent nochange. By his method this difficulty is removed. He proposes todefine the degree of astigmatism, by means of an astigmatic lens,the action of which can be regulated in a manner as simple as it isingenious, so as to make it assume precisely the degree by which theastigmatism of the eye is Stock Photo$

RM2AGD6DF–. On the anomalies of accommodation and refraction of the eye, witha preliminary essay on physiological dioptrics. tory results only when, together with the successive determinationof the farthest points of distinct vision in the two principal meri-dians, the condition of accommodation of the eye underwent nochange. By his method this difficulty is removed. He proposes todefine the degree of astigmatism, by means of an astigmatic lens,the action of which can be regulated in a manner as simple as it isingenious, so as to make it assume precisely the degree by which theastigmatism of the eye is

Glasses on a blue background. ophthalmologist, optometrist concept Stock Photo

RF2HHYTRD–Glasses on a blue background. ophthalmologist, optometrist concept

RFR5BMPY–Astigmatic spectacles icon. Simple illustration of astigmatic spectacles vector icon for any design green

RMHGP038–EYE LASER SURGERY

The American encyclopedia and dictionary of ophthalmology Edited by Casey A Wood, assisted by a large staff of collaborators . he forms of astigmatism are dueto the abnormal shape of the eyeball it is usually congenital, butin some instances (after operation, injury, etc.) it may be acquired.Astigmatism may be detected and its amount accurately measuredby a number of objective means. A highly valuable subjective test for the presence of this defectis the astigmatic chart, one form of which is pictured herewith.It is sufficient for the patient to look, with each eye separately, at ASTIGMATISM O Stock Photo

RM2AJKXRM–The American encyclopedia and dictionary of ophthalmology Edited by Casey A Wood, assisted by a large staff of collaborators . he forms of astigmatism are dueto the abnormal shape of the eyeball it is usually congenital, butin some instances (after operation, injury, etc.) it may be acquired.Astigmatism may be detected and its amount accurately measuredby a number of objective means. A highly valuable subjective test for the presence of this defectis the astigmatic chart, one form of which is pictured herewith.It is sufficient for the patient to look, with each eye separately, at ASTIGMATISM O

RFR2B5NE–Astigmatic glasses icon. Simple illustration of astigmatic glasses vector icon for any design orange

RMHGP03A–EYE LASER SURGERY

RMDF8XBN–ASTIGMATISM, DRAWING

. Good and bad eyesight : and the exercise and preservation of vision. the meridian of least curvature. Inthe human eye, the meridian of greatest curvature ismost frequently vertical; the meridian of least curvatureis most frequently horizontal. This rule applies notonly to the slight or customary degrees of astigmatism,but also to the excessive degrees; although many in- ASTIGMATISM. 133 stances are upon record in which the ordinary direc-tions of the meridians have been reversed, and thegreatest curvature has been in the horizontal direction.As a rule, again, the astigmatic formation is symm Stock Photo

RM2AFY338–. Good and bad eyesight : and the exercise and preservation of vision. the meridian of least curvature. Inthe human eye, the meridian of greatest curvature ismost frequently vertical; the meridian of least curvatureis most frequently horizontal. This rule applies notonly to the slight or customary degrees of astigmatism,but also to the excessive degrees; although many in- ASTIGMATISM. 133 stances are upon record in which the ordinary direc-tions of the meridians have been reversed, and thegreatest curvature has been in the horizontal direction.As a rule, again, the astigmatic formation is symm

RMD3HN65–EYE DISORDER, DRAWING

RMCT4WTA–ASTIGMATISM, DRAWING

RFR5BMN9–Astigmatic glasses icon. Simple illustration of astigmatic glasses vector icon for any design green

RMD3HMRH–ASTIGMATISM, DRAWING

$The refraction of the eye; including a complete treatise on opthalmometry; a clinical text-book for students and practitioners . the visual line can be made with the 1889 model, because it has thelarge dial of Placido attached, while all of the new model instru-ments have replaced it with a plane black disk or dial. Artificial Corner Some eight or nine years since, Javal made an artificial cornea,astigmatic in nature, which could be attached to the chin-rest of theinstrument, and used for testing the correctness of the ophthal- APPENDIX 393. Pro. L09.- Javals ArtificialCornea. mometer itself. Stock Photo$

RM2AKR494–The refraction of the eye; including a complete treatise on opthalmometry; a clinical text-book for students and practitioners . the visual line can be made with the 1889 model, because it has thelarge dial of Placido attached, while all of the new model instru-ments have replaced it with a plane black disk or dial. Artificial Corner Some eight or nine years since, Javal made an artificial cornea,astigmatic in nature, which could be attached to the chin-rest of theinstrument, and used for testing the correctness of the ophthal- APPENDIX 393. Pro. L09.- Javals ArtificialCornea. mometer itself.

Astigmatic eye Stock Photos and Images

Astigmatic eye Stock Photos and Images

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