This article was originally published in the Encyclopedia of the Eye
... Small-angle disturbances to the eye media may cause vision loss of small detail, determined with visual acuity assessment using a letter chart or contrast sensitivity. But how does the light scattered over larger distances affect vision? The light scattered results in a veil of straylight over the r ...
... Small-angle disturbances to the eye media may cause vision loss of small detail, determined with visual acuity assessment using a letter chart or contrast sensitivity. But how does the light scattered over larger distances affect vision? The light scattered results in a veil of straylight over the r ...
Full paper
... according to the manufacturers manual. The device was evaluated in this study after excluding the other factors that are known to affect the flap thickness such as variation in preoperative central corneal pachmetry, size of the suction ring, and steepest K reading by selecting cases with a narrow ...
... according to the manufacturers manual. The device was evaluated in this study after excluding the other factors that are known to affect the flap thickness such as variation in preoperative central corneal pachmetry, size of the suction ring, and steepest K reading by selecting cases with a narrow ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... Pterygium Excision with Free Conjunctival Limbal Autograft Graft retraction at the non-limbal edge occurred in 7 (5.468%) cases. Gradually re-epithelisation occurred in all these cases by 4 to 6 weeks’ time without compromising the cosmesis. Hence we prefer to take an oversized graft of 1 - 2 mm of ...
... Pterygium Excision with Free Conjunctival Limbal Autograft Graft retraction at the non-limbal edge occurred in 7 (5.468%) cases. Gradually re-epithelisation occurred in all these cases by 4 to 6 weeks’ time without compromising the cosmesis. Hence we prefer to take an oversized graft of 1 - 2 mm of ...
VIEW PDF - Cataract & Refractive Surgery Today Europe
... between 0.00 and 0.50 D. For a given surgeon, if pre- and postoperative Ks have been entered, the mean value (centroid) may be found on the Aggregate Surgically Induced Refractive Changes (SIRC) on the main menu (Figure 8). The SIRC from K’s button and Minus Cylinder must be checked to obtain the co ...
... between 0.00 and 0.50 D. For a given surgeon, if pre- and postoperative Ks have been entered, the mean value (centroid) may be found on the Aggregate Surgically Induced Refractive Changes (SIRC) on the main menu (Figure 8). The SIRC from K’s button and Minus Cylinder must be checked to obtain the co ...
PEATS Review - Staffordshire LOC
... cases, 355 were classified as routine cases and 392 were urgent cases. The next two slides demonstrate the split of cases by CCG. ...
... cases, 355 were classified as routine cases and 392 were urgent cases. The next two slides demonstrate the split of cases by CCG. ...
Aging of the human crystalline lens and presbyopia
... lens gradient refractive index changes with increasing age to compensate for the increased surface curvatures.18–20 In isolated human lenses, focal length increased linearly with increasing age for 27 lenses from persons between the ages of 10 and 87 years (Fig 3).15 In a different group of 19 lense ...
... lens gradient refractive index changes with increasing age to compensate for the increased surface curvatures.18–20 In isolated human lenses, focal length increased linearly with increasing age for 27 lenses from persons between the ages of 10 and 87 years (Fig 3).15 In a different group of 19 lense ...
The Automatic Eye Alignment of an Infrared Optometer
... The ability of the human eye to change its overall refractive power so that people can focus on objects both far and near is termed accommodation. Research into how the eye automatically changes its accommodation, demands an instrument capable of tracking the accommodation with fine resolution and a ...
... The ability of the human eye to change its overall refractive power so that people can focus on objects both far and near is termed accommodation. Research into how the eye automatically changes its accommodation, demands an instrument capable of tracking the accommodation with fine resolution and a ...
Studentthesis-2013 - Aston Research Explorer
... all of my engineering endeavours. Without his help I wouldn’t be where I am today, with all the possibilities the future holds laid before me. It was hard and extremely changing work at times, but absolutely worth it, long may it continue! I would also like to thank my associated supervisor Dr Mark ...
... all of my engineering endeavours. Without his help I wouldn’t be where I am today, with all the possibilities the future holds laid before me. It was hard and extremely changing work at times, but absolutely worth it, long may it continue! I would also like to thank my associated supervisor Dr Mark ...
Viscoelastic levitation of posteriorly dislocated intraocular lenses
... chamber IOLs can dislocate because of erosion or accidental cutting of the polypropylene suture. After posterior capsule rupture, a sulcus-placed IOL that is initially centered can subluxate or dislocate. Potential causes include insufficient overall IOL length, insufficient capsule support, and pro ...
... chamber IOLs can dislocate because of erosion or accidental cutting of the polypropylene suture. After posterior capsule rupture, a sulcus-placed IOL that is initially centered can subluxate or dislocate. Potential causes include insufficient overall IOL length, insufficient capsule support, and pro ...
Supraorbital n.
... This later stage of stromal keratitis is relatively uncommon and typically develops three to four months after the initial acute episode, but development can range from one month to many years later.7 It is usually central and preceded by anterior stromal keratitis. The keratitis may present as a le ...
... This later stage of stromal keratitis is relatively uncommon and typically develops three to four months after the initial acute episode, but development can range from one month to many years later.7 It is usually central and preceded by anterior stromal keratitis. The keratitis may present as a le ...
Assessment of the tear Film
... the ‘transparent’ tears with fluorescein to assist with observing and viewing the dyed tear film under cobalt blue light. Additional use of a yellow ‘Wratten’ filter further improves observation of any fluorescence. The dye is usually applied by wetting a fluorescein-impregnated strip with saline, t ...
... the ‘transparent’ tears with fluorescein to assist with observing and viewing the dyed tear film under cobalt blue light. Additional use of a yellow ‘Wratten’ filter further improves observation of any fluorescence. The dye is usually applied by wetting a fluorescein-impregnated strip with saline, t ...
Comparison of Custom Ablation and Conventional
... to better visual quality. In the current study, we evaluated visual quality data by testing mesopic contrast sensitivity and analyzing the induction of HOA postoperatively. Coma may occur as a result of clinically insignificant decentrations or as a result of the creation of a flap.8–14 In this stud ...
... to better visual quality. In the current study, we evaluated visual quality data by testing mesopic contrast sensitivity and analyzing the induction of HOA postoperatively. Coma may occur as a result of clinically insignificant decentrations or as a result of the creation of a flap.8–14 In this stud ...
Presbyopia - American Optometric Association
... accommodation with increasing age continues to be attributed to hardening or sclerosing of the nuclear lens tissue and reduced elasticity of the accommodative mechanism.36-39 The mechanical ramifications of normal lens growth, ciliary muscle development, zonular fiber structure and placement, and le ...
... accommodation with increasing age continues to be attributed to hardening or sclerosing of the nuclear lens tissue and reduced elasticity of the accommodative mechanism.36-39 The mechanical ramifications of normal lens growth, ciliary muscle development, zonular fiber structure and placement, and le ...
TonoVet DNA Magazine
... behind the retina, resulting in retinal detachment and blindness. The retina may also be affected by concurrent inflammation, chorioretinitis. A thorough work-up is recommended in all animals with uveitis, as uveitis can be associated with systemic diseases. The choice of treatment depends on primar ...
... behind the retina, resulting in retinal detachment and blindness. The retina may also be affected by concurrent inflammation, chorioretinitis. A thorough work-up is recommended in all animals with uveitis, as uveitis can be associated with systemic diseases. The choice of treatment depends on primar ...
Anthony J Bron - European Medicines Agency
... 1. The faulty absorption of dietary fat. Bron, A.J. Guy's Hospital Gazette, 74, 366 (1960). 2. The retinal venous pulse: Institute of Ophthalmology Reports p.28 (1965-1966). 3. Tonographic studies in carotid occlusive disease. Bron, A.J., Knox, D.L. and Gaasterland, D. Brit. J. Ophthal., 51, 577-595 ...
... 1. The faulty absorption of dietary fat. Bron, A.J. Guy's Hospital Gazette, 74, 366 (1960). 2. The retinal venous pulse: Institute of Ophthalmology Reports p.28 (1965-1966). 3. Tonographic studies in carotid occlusive disease. Bron, A.J., Knox, D.L. and Gaasterland, D. Brit. J. Ophthal., 51, 577-595 ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... sensation. He gives a history of blunt trauma 9 weeks back, over his left upper eye lid with a stone. On examination the visual acquity was 20/40p in the left eye which improved to 20/20p with -0.75 cylinder at 180o. Eversion of left upper lid revealed a swelling which was vertically oval measuring ...
... sensation. He gives a history of blunt trauma 9 weeks back, over his left upper eye lid with a stone. On examination the visual acquity was 20/40p in the left eye which improved to 20/20p with -0.75 cylinder at 180o. Eversion of left upper lid revealed a swelling which was vertically oval measuring ...
Ophthalmological Emergencies
... Chemosis • Conjunctiva – a mucous membrane • Bulbar conjunctiva – covers sclera and joins with cornea at the limbus • Palpabral – lines eyelids – tarsal conjunctiva ...
... Chemosis • Conjunctiva – a mucous membrane • Bulbar conjunctiva – covers sclera and joins with cornea at the limbus • Palpabral – lines eyelids – tarsal conjunctiva ...
Glaucoma is a variety of disorders in the eye that can lead to loss of
... glaucoma) don't know they have it. POAG gradually and painlessly reduces your peripheral vision. Often by the time you notice it, permanent vision loss already has occurred. If your IOP remains high, the destruction can progress until tunnel vision develops, and you will be able to see only objects ...
... glaucoma) don't know they have it. POAG gradually and painlessly reduces your peripheral vision. Often by the time you notice it, permanent vision loss already has occurred. If your IOP remains high, the destruction can progress until tunnel vision develops, and you will be able to see only objects ...
Why Can`t My Child See Even WITH Glasses?
... the most frequent cause of form deprivation amblyopia but other conditions such as ptosis, other media opacities, or trauma could also result in this condition. Ideally, the obstruction should be removed within the first several months of life for the best possible visual outcome. 22 No matter what ...
... the most frequent cause of form deprivation amblyopia but other conditions such as ptosis, other media opacities, or trauma could also result in this condition. Ideally, the obstruction should be removed within the first several months of life for the best possible visual outcome. 22 No matter what ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... Postoperatively, Ciprofloxacin And Dexamethasone Eye Drops Were Administered 6 Times Daily For One Week And If There Was Excessive Irritation From The Stitches, Lubricants Were Also Prescribed. After One Week Dexamethasone Eye Drops Were Prescribed 4 Times / Day For One Month And Two Times/Day For T ...
... Postoperatively, Ciprofloxacin And Dexamethasone Eye Drops Were Administered 6 Times Daily For One Week And If There Was Excessive Irritation From The Stitches, Lubricants Were Also Prescribed. After One Week Dexamethasone Eye Drops Were Prescribed 4 Times / Day For One Month And Two Times/Day For T ...
Comparison of fibrin glue and Vicryl sutures in conjunctival
... (p = 0.002) after the surgical procedures. There were more symptoms in the suture group than in the glue group at postoperative day 7 (p = 0.002). Postoperative symptoms disappeared in both groups at 1 month after surgery. Recurrence was observed in one case in the glue group and in two cases in the ...
... (p = 0.002) after the surgical procedures. There were more symptoms in the suture group than in the glue group at postoperative day 7 (p = 0.002). Postoperative symptoms disappeared in both groups at 1 month after surgery. Recurrence was observed in one case in the glue group and in two cases in the ...
Eye Examination with the Slit Lamp.
... large as possible is counteracted by the demand for observation through limited apertures such as the pupil and contact lens mirrors (cf. 3.6 "Fundus observation and gonioscopy"). For this reason good slit lamp microscopes work with a convergence angle of between 10° and 15°. The SL 120 and SL 130 S ...
... large as possible is counteracted by the demand for observation through limited apertures such as the pupil and contact lens mirrors (cf. 3.6 "Fundus observation and gonioscopy"). For this reason good slit lamp microscopes work with a convergence angle of between 10° and 15°. The SL 120 and SL 130 S ...
4-(164-168) 15-이종미
... aberration (HOA) were evaluated before, 1 month, and 3 months after surgery Results: Ocular aberrations displayed low preoperative values, but after laser refractive surgery, anterior corneal aberration and ocular aberration increased equally. There were no statistically significant differences of i ...
... aberration (HOA) were evaluated before, 1 month, and 3 months after surgery Results: Ocular aberrations displayed low preoperative values, but after laser refractive surgery, anterior corneal aberration and ocular aberration increased equally. There were no statistically significant differences of i ...
Studies on MMP-9 and Dry Eye Disease - Positive
... that dry eye cannot be clinically differentiated from other conditions that lead to ocular surface staining such as medication toxicity (including topical anesthetic), poor lid apposition, underlying infection, or trauma.18 Additionally, these staining techniques are not likely to be used in early d ...
... that dry eye cannot be clinically differentiated from other conditions that lead to ocular surface staining such as medication toxicity (including topical anesthetic), poor lid apposition, underlying infection, or trauma.18 Additionally, these staining techniques are not likely to be used in early d ...
Cataract Surgery for Greenhorns
... h/o uveitis (possible anterior synechiae) h/o DM (may have neovascularization of iris) h/o weak zonules (more like to have AC IOL placement) Dilated Fundus Exam not mandatory if you or trusted colleague have looked back recently ...
... h/o uveitis (possible anterior synechiae) h/o DM (may have neovascularization of iris) h/o weak zonules (more like to have AC IOL placement) Dilated Fundus Exam not mandatory if you or trusted colleague have looked back recently ...
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.