Oman Eye Study 2005: prevalence and determinants of glaucoma
... optic neuropathy, that result in vision loss and blindness. It is usually due to intraocular pressure being higher than what the ocular tissues can tolerate. The condition is irreversible. Since interventions are available to halt or retard the natural progress of the disease to blindness, with earl ...
... optic neuropathy, that result in vision loss and blindness. It is usually due to intraocular pressure being higher than what the ocular tissues can tolerate. The condition is irreversible. Since interventions are available to halt or retard the natural progress of the disease to blindness, with earl ...
Care of the Patient with Strabismus: Esotropia and Exotropia
... impaired stereopsis (binocular depth perception). Early identification and treatment of strabismic children may prevent amblyopia.1 The strabismic child with amblyopia has a significantly higher risk of becoming blind by losing vision in the nonamblyopic eye due to trauma or disease.2 Normal binocul ...
... impaired stereopsis (binocular depth perception). Early identification and treatment of strabismic children may prevent amblyopia.1 The strabismic child with amblyopia has a significantly higher risk of becoming blind by losing vision in the nonamblyopic eye due to trauma or disease.2 Normal binocul ...
Retinal fixation point location in the foveal avascular zone.
... center are treated with burns which overlap the lesion by up to 100+ jum. Furthermore, grant that our data form a representative sample of the population for the location of the retinal point of fixation with respect to the geographic center of the FAZ (data points, Fig. 5). With these assumptions, ...
... center are treated with burns which overlap the lesion by up to 100+ jum. Furthermore, grant that our data form a representative sample of the population for the location of the retinal point of fixation with respect to the geographic center of the FAZ (data points, Fig. 5). With these assumptions, ...
Current concepts of mechanical and neural factors in
... (a) Lateral view. For each rectus EOM, the rotational velocity axis is perpendicular to the segment from pulley to scleral insertion. The velocity axis for the lateral rectus is vertical in primary position. (b) Lateral view. In supraduction to angle a, the lateral rectus rotational velocity axis ti ...
... (a) Lateral view. For each rectus EOM, the rotational velocity axis is perpendicular to the segment from pulley to scleral insertion. The velocity axis for the lateral rectus is vertical in primary position. (b) Lateral view. In supraduction to angle a, the lateral rectus rotational velocity axis ti ...
TELLER ACUITY CARDS™ II TAC II
... frequency, e.g. from 10 to 20 cycles/cm, or in Snellen terms a halving or doubling of the denominator of the Snellen fraction, e.g. from 20/40 to 20/80. See Appendix D for details.] The 16th ("Low Vision") card contains a larger, 0.23 cy/cm grating (2.2 cm/stripe). This grating begins at the edge of ...
... frequency, e.g. from 10 to 20 cycles/cm, or in Snellen terms a halving or doubling of the denominator of the Snellen fraction, e.g. from 20/40 to 20/80. See Appendix D for details.] The 16th ("Low Vision") card contains a larger, 0.23 cy/cm grating (2.2 cm/stripe). This grating begins at the edge of ...
general introduction
... express the corneal specific K12/K3 keratin pair (Fig. 2), marker of the terminal step of their differentiation. The distribution of corneal-type keratins was studied by using electrophoretic and immunological analyses with two monoclonal antibodies, specific for K3 (AE5) (Schermer et al., 1986), a ...
... express the corneal specific K12/K3 keratin pair (Fig. 2), marker of the terminal step of their differentiation. The distribution of corneal-type keratins was studied by using electrophoretic and immunological analyses with two monoclonal antibodies, specific for K3 (AE5) (Schermer et al., 1986), a ...
ABSTRACT Title of Dissertation / Thesis: STUDY OF OCULAR
... requires detailed information about the distribution and elimination pathways. This knowledge can guide the development of new drug delivery devices. In this study, we investigated the movement of two drug surrogates, H-110, which is lipophilic, and Gd-DTPA, which is hydrophilic, released from polym ...
... requires detailed information about the distribution and elimination pathways. This knowledge can guide the development of new drug delivery devices. In this study, we investigated the movement of two drug surrogates, H-110, which is lipophilic, and Gd-DTPA, which is hydrophilic, released from polym ...
Clinicopathological correlation of congenital corneal opacification
... We suggest that the presence of a hypoechoic layer in the anterior stroma just below the epithelial hyperechoic layer may be indicative of absent Bowman’s layer with concomitant oedema as evidenced by the histology of our cases and that of the only other clinicopathological report.8 To our knowledge ...
... We suggest that the presence of a hypoechoic layer in the anterior stroma just below the epithelial hyperechoic layer may be indicative of absent Bowman’s layer with concomitant oedema as evidenced by the histology of our cases and that of the only other clinicopathological report.8 To our knowledge ...
curriculum vitae - Department of Ophthalmology
... We have four fellows and one junior resident. Two fellows work with me at any one given time. One of these fellows is split between GOSH and King’s College Hospital, London. Royal College of Ophthalmologists Tutor NSCAG Ophthalmologist The National Specialist Commissioning Advisory Group (NSCAG) aim ...
... We have four fellows and one junior resident. Two fellows work with me at any one given time. One of these fellows is split between GOSH and King’s College Hospital, London. Royal College of Ophthalmologists Tutor NSCAG Ophthalmologist The National Specialist Commissioning Advisory Group (NSCAG) aim ...
Wavefront Analysis for Keratoconus
... The wavefront RMS error value allows a brief comparison between different eyes. The higher-order RMS error is the vector sum of all the Zernike terms from the 3rd order and above. The main limitation of the RMS error is that it is only a single value, which does not represent information about the a ...
... The wavefront RMS error value allows a brief comparison between different eyes. The higher-order RMS error is the vector sum of all the Zernike terms from the 3rd order and above. The main limitation of the RMS error is that it is only a single value, which does not represent information about the a ...
Gaze Control in Humans: Eye-Head Coordination - Research
... point was set at 60” to the left or right and the subject oriented to a target at a location he knew, due to practice trials, was 60” from center on the other side. Many consecutive trials, with the same required gaze shift, were usually run. This task was used primarily for studying gaze shifts to ...
... point was set at 60” to the left or right and the subject oriented to a target at a location he knew, due to practice trials, was 60” from center on the other side. Many consecutive trials, with the same required gaze shift, were usually run. This task was used primarily for studying gaze shifts to ...
Miscellaneous corneal conditions (Imp for UGs)
... • Best possible repair also ends up in subnormal visual gain. • Timely keratoplasty is required in visually significant opacity to prevent amblyopia. ...
... • Best possible repair also ends up in subnormal visual gain. • Timely keratoplasty is required in visually significant opacity to prevent amblyopia. ...
- College of Optometrists
... extracting hard cataracts by dilating the pupil with belladonna, placing the cataract in the anterior chamber of the eye, dividing the cornea and extracting the lens. His method was criticised by contemporaries as being complicated and harmful. ADAMS, Sir William Practical observations on Ectropium, ...
... extracting hard cataracts by dilating the pupil with belladonna, placing the cataract in the anterior chamber of the eye, dividing the cornea and extracting the lens. His method was criticised by contemporaries as being complicated and harmful. ADAMS, Sir William Practical observations on Ectropium, ...
Saccadic Compensation for Smooth Eye and Head Movements
... eye and head movements during head-unrestrained two-dimensional tracking. J Neurophysiol 103: 543–556, 2010. First published November 18, 2009; doi:10.1152/jn.00656.2009. Spatial updating is the ability to keep track of the position of world-fixed objects while we move. In the case of vision, this p ...
... eye and head movements during head-unrestrained two-dimensional tracking. J Neurophysiol 103: 543–556, 2010. First published November 18, 2009; doi:10.1152/jn.00656.2009. Spatial updating is the ability to keep track of the position of world-fixed objects while we move. In the case of vision, this p ...
Surgical treatment of cherry eye
... Note that the third eyelid is exteriorized and everted so that its bulbar (interior) surface is exposed. The third eyelid is held in place using the stay sutures at both the lateral and medial edges of the free margin. Note the position of the T-shaped cartilage of the third eyelid (outlined area). ...
... Note that the third eyelid is exteriorized and everted so that its bulbar (interior) surface is exposed. The third eyelid is held in place using the stay sutures at both the lateral and medial edges of the free margin. Note the position of the T-shaped cartilage of the third eyelid (outlined area). ...
Complications of Laser in situ Keratomileusis
... LASIK and avoid extending the procedure beyond these limits, where the efficacy and safety of the procedure is compromised. Ultimately the surgeon must decide for himself or herself what limits will be based on: important patient factors such as refractive error, corneal curvature, and corneal thick ...
... LASIK and avoid extending the procedure beyond these limits, where the efficacy and safety of the procedure is compromised. Ultimately the surgeon must decide for himself or herself what limits will be based on: important patient factors such as refractive error, corneal curvature, and corneal thick ...
LASIK: Basic steps for great results ESCRS 2011
... These figures depict the same planned excimer profile for the correction of hyperopic astigmatism on the left: centered on the pupillary center and on the right :adjusted by topography to take into consideration and adjust for angle kappa ...
... These figures depict the same planned excimer profile for the correction of hyperopic astigmatism on the left: centered on the pupillary center and on the right :adjusted by topography to take into consideration and adjust for angle kappa ...
4-(164-168) 15-이종미
... Zernike analysis is commonly used in ophthalmology to express ocular wavefront error in the form of a polynomial equation. Specifically, the Zernike polynomial describes the shape contribution made by a series of sine and cosine basis ...
... Zernike analysis is commonly used in ophthalmology to express ocular wavefront error in the form of a polynomial equation. Specifically, the Zernike polynomial describes the shape contribution made by a series of sine and cosine basis ...
Posterior Vitreous Detachment and Its Sequellae
... Though we know that the gel-like consistency is due to collagen-hyaluronate bonding, the evolutionary reason for this composition is unknown. Three theories have been advanced to explain this. The vitreous may act as a “shock absorber” to prevent dislocation of internal structures such as the lens a ...
... Though we know that the gel-like consistency is due to collagen-hyaluronate bonding, the evolutionary reason for this composition is unknown. Three theories have been advanced to explain this. The vitreous may act as a “shock absorber” to prevent dislocation of internal structures such as the lens a ...
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... In treating myopic refractive errors, the laser ablation is deepest in the central cornea, which is also the area of the cornea that is thinnest. Most flap research is mainly focused on this central portion of the flap and stromal bed10. However, decreased post-operative visual performance such as g ...
... In treating myopic refractive errors, the laser ablation is deepest in the central cornea, which is also the area of the cornea that is thinnest. Most flap research is mainly focused on this central portion of the flap and stromal bed10. However, decreased post-operative visual performance such as g ...
Allometry and Scaling of the Intraocular Pressure and
... complex image-forming eyes evolved during the Cambrian explosion, around 540 million years ago [1]. They include an additional refractive element in front of the photoreceptor layer, which allow for increased light collection and enhanced optical performance [3]. While eyes fundamentally provide the ...
... complex image-forming eyes evolved during the Cambrian explosion, around 540 million years ago [1]. They include an additional refractive element in front of the photoreceptor layer, which allow for increased light collection and enhanced optical performance [3]. While eyes fundamentally provide the ...
Full version (PDF file)
... consequence of increased corneal hydration. Corneal transparency is highly dependent on normal hydration of the cornea (Meek et al. 2003b). Light scattering appears along with corneal swelling. This scattering has been ascribed to the disruption caused by the arrangement of collagen fibres. Changes ...
... consequence of increased corneal hydration. Corneal transparency is highly dependent on normal hydration of the cornea (Meek et al. 2003b). Light scattering appears along with corneal swelling. This scattering has been ascribed to the disruption caused by the arrangement of collagen fibres. Changes ...
Five year risk of progression of primary angle closure suspects to
... male to female ratio among responders was 15:35; this was 26:42 for non-responders. The PACS who responded were also similar to the non-responders as regards refractive error and intraocular pressure at the first visit. In the intervening 5 years, four of 12 unilateral PACS had progressed to bilater ...
... male to female ratio among responders was 15:35; this was 26:42 for non-responders. The PACS who responded were also similar to the non-responders as regards refractive error and intraocular pressure at the first visit. In the intervening 5 years, four of 12 unilateral PACS had progressed to bilater ...
Tear Interferometric Patterns Reflect Clinical Tear
... A multicolor interferometric fringe was essentially observed only at an LLT of >70 nm. CONCLUSIONS. Tear interferometry was able to reliably distinguish clinical subtypes of dry eye by reflecting the balance between the lipid and aqueous layers of the tear film. Keywords: tear interferometry, dry ey ...
... A multicolor interferometric fringe was essentially observed only at an LLT of >70 nm. CONCLUSIONS. Tear interferometry was able to reliably distinguish clinical subtypes of dry eye by reflecting the balance between the lipid and aqueous layers of the tear film. Keywords: tear interferometry, dry ey ...
Eyeglass prescription
An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist or ophthalmologist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient.If an examination indicates that corrective lenses are appropriate, the prescriber generally provides the patient with an eyewear prescription at the conclusion of the exam. In the United States, the FTC (Federal Trade Commission) requires eyewear prescribers to give each patient a copy of their prescription, immediately following an exam, even if the patient doesn't ask for a copy.The parameters specified on spectacle prescriptions vary, but typically include the power to which each lens should be made in order to correct blurred vision due to refractive errors, including myopia, hyperopia, astigmatism, and presbyopia. It is typically determined using a phoropter and asking the patient which of two lenses is better, or by computer automated refractor, or through the technique of retinoscopy. A dispensing optician will take a prescription written by an optometrist or ophthalmologist and order and/or assemble the frames and lenses to then be dispensed and sold to the patient.