Corneal Refractive Surgery - Whitewater Eye Centers, LLC
... increased dramatically thanks to the work of John Marshall, Ph.D., of King’s College, University of London. His work validated many of the aforementioned concerns. Using X-ray diffraction technology, Dr. Marshall and colleagues demonstrated that the anterior third (150μm) of the central stroma, as w ...
... increased dramatically thanks to the work of John Marshall, Ph.D., of King’s College, University of London. His work validated many of the aforementioned concerns. Using X-ray diffraction technology, Dr. Marshall and colleagues demonstrated that the anterior third (150μm) of the central stroma, as w ...
Principles of Confocal In Vivo Microscopy 2
... In contrast, in slit-lamp biomicroscopy examination of the cornea, an optical section that is essentially perpendicular to the corneal surface is seen in up to ×50 magnification or, with an additional lens for endothelial viewing (specular microscopy), in up to ×200 magnification. Nowadays, document ...
... In contrast, in slit-lamp biomicroscopy examination of the cornea, an optical section that is essentially perpendicular to the corneal surface is seen in up to ×50 magnification or, with an additional lens for endothelial viewing (specular microscopy), in up to ×200 magnification. Nowadays, document ...
Q-factor customized ablation profile for the correction of myopic
... result is the only minor decrease in low-contrast visual acuity in both groups, which is remarkable because after conventional photorefractive keratectomy and LASIK, low-contrast visual acuity shows a significant reduction.3,22 Although not statistically significant, the better spherical success ind ...
... result is the only minor decrease in low-contrast visual acuity in both groups, which is remarkable because after conventional photorefractive keratectomy and LASIK, low-contrast visual acuity shows a significant reduction.3,22 Although not statistically significant, the better spherical success ind ...
Hemi–Descemet Membrane Endothelial Keratoplasty
... RESULTS The patients’ best-corrected visual acuity at 6 months was 0.70 (Snellen equivalent, 20/29), 0.50 (20/40 [amblyopic eye]), and 1.20 (20/17). At 1 month, endothelial cell density decreased by 49%, 31%, and 39%, respectively, and endothelial cell migration appeared to continue for up to 6 mont ...
... RESULTS The patients’ best-corrected visual acuity at 6 months was 0.70 (Snellen equivalent, 20/29), 0.50 (20/40 [amblyopic eye]), and 1.20 (20/17). At 1 month, endothelial cell density decreased by 49%, 31%, and 39%, respectively, and endothelial cell migration appeared to continue for up to 6 mont ...
Visual Impairments - Michigan Crossroads Council
... Amblyopia (lazy eye): A weakening of the image of one eye typically due to that eye having a much poorer acuity or being turned in or out. These children may have some functional field of vision loss and poor or no depth perception. Placing a patch on the stronger eye and using glasses may be prescr ...
... Amblyopia (lazy eye): A weakening of the image of one eye typically due to that eye having a much poorer acuity or being turned in or out. These children may have some functional field of vision loss and poor or no depth perception. Placing a patch on the stronger eye and using glasses may be prescr ...
The use of therapeutic soft contact bandage lenses in the dog and
... the cases of this review are very soft and provide a very good fit in most dogs and cats as they gradually settle in onto the corneal surface/curvature. The dia-meter is generally fine although in larger breeds, a touch larger diameter could be useful. In cats with a tight eyelid aperture and in kit ...
... the cases of this review are very soft and provide a very good fit in most dogs and cats as they gradually settle in onto the corneal surface/curvature. The dia-meter is generally fine although in larger breeds, a touch larger diameter could be useful. In cats with a tight eyelid aperture and in kit ...
Captain Jack`s Guide to Contact Lenses
... The lens type will differ per patient, and only a followup visit with lens surface inspection can determine if it’s an appropriate option. Ask the patient for follow-up in 1-2 months to check for any possible changes to the upper lid. Look for protein or lipid buildup on the lens. If a patient prese ...
... The lens type will differ per patient, and only a followup visit with lens surface inspection can determine if it’s an appropriate option. Ask the patient for follow-up in 1-2 months to check for any possible changes to the upper lid. Look for protein or lipid buildup on the lens. If a patient prese ...
Patient Brochure - EVO+ Visian ICL
... The Visian ICL is designed for the correction of myopia in adults ranging from -0.5 D to -18.0 D with or without astigmatism up to 6.0 D and the correction of hyperopia in adults with hyperopia ranging from +0.5 D to +10.0 D with or without astigmatism up to 6.0 D. It is indicated for patients who a ...
... The Visian ICL is designed for the correction of myopia in adults ranging from -0.5 D to -18.0 D with or without astigmatism up to 6.0 D and the correction of hyperopia in adults with hyperopia ranging from +0.5 D to +10.0 D with or without astigmatism up to 6.0 D. It is indicated for patients who a ...
Doctors` Note - LASIK Ft. Worth
... A pterygium is a wedge-shaped, benign, fibrovascular growth pterygium excision include discomfort, infection, bleeding, extending from the conjunctiva onto the cornea. Pterygia scarring, and recurrence. The risk of infection is less than 1%. Patients are given topical antibiotics postoperatively for ...
... A pterygium is a wedge-shaped, benign, fibrovascular growth pterygium excision include discomfort, infection, bleeding, extending from the conjunctiva onto the cornea. Pterygia scarring, and recurrence. The risk of infection is less than 1%. Patients are given topical antibiotics postoperatively for ...
Interaction of the Tear Film with the Ocular Surface
... The tear film is a thin fluid layer left on the surface of the eye after a blink. Its quantity and quality are critical for good vision and eye health. During blinks or tear break up (TBU), the tear film can interact with the ocular surface. One example of this interation is that the tear/air interf ...
... The tear film is a thin fluid layer left on the surface of the eye after a blink. Its quantity and quality are critical for good vision and eye health. During blinks or tear break up (TBU), the tear film can interact with the ocular surface. One example of this interation is that the tear/air interf ...
Slide 1
... precise and skilled fitting and may be made by taking an impression of the eye alternatively by performed lens method using trial lenses separate lenses needed to assess the scleral and corneal fits Sclerals occasionally have to be removed and reinserted with fresh saline during the day to keep your ...
... precise and skilled fitting and may be made by taking an impression of the eye alternatively by performed lens method using trial lenses separate lenses needed to assess the scleral and corneal fits Sclerals occasionally have to be removed and reinserted with fresh saline during the day to keep your ...
C A T A R A C T L A S E R G L A U C O M A R E T I N A
... You should not wait until you have complaints. Open-angle Glaucoma does not show up until resulting in permanent nerve damage. Regular eye examination is the key to early diagnosis of glaucoma and successful preventive treatment. Every person reaching age 40 should have complete eye examination. If ...
... You should not wait until you have complaints. Open-angle Glaucoma does not show up until resulting in permanent nerve damage. Regular eye examination is the key to early diagnosis of glaucoma and successful preventive treatment. Every person reaching age 40 should have complete eye examination. If ...
Bacterial keratitis
... Is common in 90 % of the population HSV is subdivided into 2 types:HSV-1 cause facial, oral or ocular lesion; HSV-2 associated mainly with genital infections Primary ocular infections appears as a blepharocojunctivites and epithelial punctate keratitis; Epithelial infections: Dendritic ulceration (i ...
... Is common in 90 % of the population HSV is subdivided into 2 types:HSV-1 cause facial, oral or ocular lesion; HSV-2 associated mainly with genital infections Primary ocular infections appears as a blepharocojunctivites and epithelial punctate keratitis; Epithelial infections: Dendritic ulceration (i ...
Anatomy of the Anterior Eye for Ocularists
... become irregular. Thus, anatomical descriptions of the cornea as having a single radius are simplistic. To a general medical audience, this may have little meaning, but to an ocularist or illustrator, it can make the difference between believability and error. Remember that the cornea (and other tra ...
... become irregular. Thus, anatomical descriptions of the cornea as having a single radius are simplistic. To a general medical audience, this may have little meaning, but to an ocularist or illustrator, it can make the difference between believability and error. Remember that the cornea (and other tra ...
Visual Outcome after Primary IOL Implantation for Traumatic Cataract
... Most of the ocular trauma occurs in children and in adults in the productive age categories, a finding which was also seen in the present study. Eye trauma remains a neglected public health problem and can be prevented by appropriate interventions. 52 (83.3%) of the cases were males. Males are more ...
... Most of the ocular trauma occurs in children and in adults in the productive age categories, a finding which was also seen in the present study. Eye trauma remains a neglected public health problem and can be prevented by appropriate interventions. 52 (83.3%) of the cases were males. Males are more ...
Eye infections POSA
... these together with the ora serrata form the uveal tract. The conjunctiva is a clear membrane covering the white of the eye (sclera). The cornea is a clear, transparent portion of the outer coat of the eyeball through which light passes to the lens. ...
... these together with the ora serrata form the uveal tract. The conjunctiva is a clear membrane covering the white of the eye (sclera). The cornea is a clear, transparent portion of the outer coat of the eyeball through which light passes to the lens. ...
CHAPTER 16 – SPECIAL SENSES: THE EYE OBJECTIVES On
... cause vision problems. In early stages, a cataract may not cause problems, but over time, it may grow larger and cloud larger portions of the lens, making it harder to see. Because less light reaches the retina, the patient’s vision may become dull and bleary. Cataracts won’t spread from eye to eye, ...
... cause vision problems. In early stages, a cataract may not cause problems, but over time, it may grow larger and cloud larger portions of the lens, making it harder to see. Because less light reaches the retina, the patient’s vision may become dull and bleary. Cataracts won’t spread from eye to eye, ...
New Dimensions of Fluoroquinolone Power
... • Femtosecond laser cataract surgery • Cataract surgery and refractive surgery are merging into a single entity ...
... • Femtosecond laser cataract surgery • Cataract surgery and refractive surgery are merging into a single entity ...
2015-2016 Gross Anatomy of the eyeball: The eyeball lies in a
... The standard Snellen eye chart, though widely accepted, is not perfect. The letters on different Snellen lines are not related to one another by size in any geometric or logarithmic sense. For example, the increase in letter size going from the 6/6 line to the 6/9 line is different from that going f ...
... The standard Snellen eye chart, though widely accepted, is not perfect. The letters on different Snellen lines are not related to one another by size in any geometric or logarithmic sense. For example, the increase in letter size going from the 6/6 line to the 6/9 line is different from that going f ...
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... instead of directly on the retina. Patients that are farsighted have trouble seeing objects up close and must often squint to see them clearly. Astigmatism: The most common of all eye disorders, astigmatism is when the eyeball is shaped more like a football than a basketball, which is its natural sh ...
... instead of directly on the retina. Patients that are farsighted have trouble seeing objects up close and must often squint to see them clearly. Astigmatism: The most common of all eye disorders, astigmatism is when the eyeball is shaped more like a football than a basketball, which is its natural sh ...
Free radical tissue damages in the anterior segment of the eye in
... oxygen metabolites in comparison to the iris and trabeculum. In addition, the ciliary body secretes aqueous humor that contains antioxidants, including ascorbate, as normal constituents.4'29 Therefore, the aqueous humor, which is closer to the ciliary body by its aqueous dynamics, contains a higher ...
... oxygen metabolites in comparison to the iris and trabeculum. In addition, the ciliary body secretes aqueous humor that contains antioxidants, including ascorbate, as normal constituents.4'29 Therefore, the aqueous humor, which is closer to the ciliary body by its aqueous dynamics, contains a higher ...
EYE QUIZ 1. What is the primary (most powerful) focusing structure
... 7. “Pink eye” is an inflammation of which eye tissue? conjunctiva 8. Which cranial nerve innervates four of the six extraocular muscles (medial rectus, superior rectus, inferior rectus, and inferior oblique)? cranial nerve III 9. What is the point of sharpest, most distinct visual acuity within the ...
... 7. “Pink eye” is an inflammation of which eye tissue? conjunctiva 8. Which cranial nerve innervates four of the six extraocular muscles (medial rectus, superior rectus, inferior rectus, and inferior oblique)? cranial nerve III 9. What is the point of sharpest, most distinct visual acuity within the ...
Keratoconus
Keratoconus (KC, KTCN) (from Greek: kerato- horn, cornea; and konos cone) is a degenerative disorder of the eye in which structural changes within the cornea cause it to thin and change to a more conical shape than the more normal gradual curve.Keratoconus can cause substantial distortion of vision, with multiple images, streaking and sensitivity to light all often reported by the person. It is typically diagnosed in the person's adolescent years. If both eyes are significantly affected, the deterioration in vision can affect the person's ability to drive a car or read normal print.In most cases, corrective lenses fitted by a specialist are effective enough to allow the person to continue to drive legally and likewise function normally. Further progression of the disease may require surgery, for which several options are available, including intrastromal corneal ring segments, corneal collagen cross-linking, mini asymmetric radial keratotomy, corneal intrastromal implantation system (CISIS), topography-guided photorefractive keratectomy (PRK), topography-guided conductive keratoplasty, phakic intraocular lenses and, in 25% of cases, corneal transplantation.Estimates of the prevalence for keratoconus range from 1 in 500 to 1 in 2000 people, but difficulties with differential diagnosis cause uncertainty as to its prevalence. It seems to occur in populations throughout the world, although it is observed more frequently in certain ethnic groups, such as South Asians. Environmental and genetic factors are considered possible causes, but the exact cause is uncertain. It has been associated with detrimental enzyme activity within the cornea.