Sue Ormonde - Academia.edu (original) (raw)

Papers by Sue Ormonde

The New Zealand medical journal, Jan 28, 2008

Cosmetic, or novelty, contact lenses are soft hydrogel lenses worn solely to change the colour or... more Cosmetic, or novelty, contact lenses are soft hydrogel lenses worn solely to change the colour or appearance of the eye. The popularity of these lenses is increasing worldwide, particularly amongst teenage adolescents. 1 Although possessing no optical power, these lenses pose the same physiological impact on the eye and carry the same risks as vision-correcting contact lenses.

Ophthalmology, 1999

To compare the postoperative rotation of plate and loop haptic implants of spherical power to asc... more To compare the postoperative rotation of plate and loop haptic implants of spherical power to ascertain the optimal design appropriate for toric intraocular lenses (IOLs).

Eye, 2000

Post-operative changes in the capsulorhexis aperture: a prospective, randomised comparison betwee... more Post-operative changes in the capsulorhexis aperture: a prospective, randomised comparison between loop and plate haptic silicone intraocular lenses Abstract Purpose There is disagreement regarding whether the capsulorhexis aperture always decreases or may increase post-operatively. The aim of this study was to settle the controversy concerning loop haptic silicone lenses and to learn more of the dynamics of the capsulorhexis relating to plate haptic lenses. Methods We performed a prospective randomised study comparing the post-operative changes in capsulorhexis aperture in two groups of eyes implanted with either plate or loop haptic silicone intraocular lenses. All the surgery was performed, at a teaching hospital in the United Kingdom, by a single surgeon, using a standard technique of phacoemulsification. Patients were reviewed at 2 weeks and 6 months post-operatively. Digital retroillumination images of the anterior segment were captured. The area of the capsulorhexis aperture was determined by manually detecting its edge on a computer monitor Results Forty-eight cases were randomised. The groups were comparable for demographic variables and mean initial aperture size (p > 0.05). There was an 8.4% mean decrease in aperture size for the loop haptics, contrasting with 4.5% expansion for the plate haptics (p < 0.05). Sixty-five per cent of patients with the plate haptic underwent enlargement of the aperture, contrasting with 25% for the loop haptic lens (p < 0.05). Conclusions Silicone lenses with plate hap tics undergo expansion of the capsulorhexis aperture more frequently than those with Prolene loop haptics.

Cornea, 2005

Purpose: To evaluate donor demographics and source, donor tissue processing and storage, biologic... more Purpose: To evaluate donor demographics and source, donor tissue processing and storage, biologic contamination, and the utilization and distribution of corneal tissue procured by the New Zealand National Eye Bank.

Clinical and Experimental Ophthalmology, 2006

Clinical and Experimental Ophthalmology, 2003

British Journal of Ophthalmology, 2003

Aim: To identify key risk factors and the management and outcome of severe infective keratitis le... more Aim: To identify key risk factors and the management and outcome of severe infective keratitis leading to public hospital admission in New Zealand. Methods: Over a 2 year period, all admissions of presumed infective keratitis to Auckland Hospital were identified. The clinical records of all 103 cases were retrospectively reviewed with respect to clinical features, risk factors, management, and outcomes. Results: The mean time from first symptoms or signs and presentation to hospital was 8.9 (SD 15.5) days. The majority of subjects, 88%, had at least one of the risk factors commonly associated with infective keratitis including previous ocular surgery (30%), contact lens wear (26%), topical corticosteroid use (25%), and ocular trauma (24%). Corneal scraping was performed in 92% and of a total of 105 scrapes, 71% were positive. Bacteria were isolated in all these cases, the majority being Gram positive organisms (72%). The most common isolates identified were coagulase negative Staphylococcus (16%), Propionibacterium acnes (14%), Staphylococcus epidermidis (11%), and Streptococcus pneumoniae (9%). In addition, yeasts were isolated in 5%, fungi in 4%, virus in 2%, and chlamydia in 1%. Importantly, polymicrobial infection accounted for 33% of culture positive cases. Antimicrobial treatment was changed on the basis of culture results in 17 cases (16.5%). Median initial visual and final best corrected visual acuity was 6/36-6/48 (logMAR 0.86) (IQR 0.39-2.00) and 6/12-6/15 (logMAR 0.360) (IQR 0.15-1.70), respectively. Previous ocular surgery and topical corticosteroid use were significantly associated with poorer visual acuity. The mean hospital stay was 5.8 days and the median 4.0 (IQR 2.0-8.0) days. Longer duration of stay was associated with the presence of hypopyon, larger ulcers, previous ocular surgery, and poor visual acuity. Conclusions: Infectious keratitis is an important cause of ocular morbidity. A significant proportion of cases have potentially modifiable risk factors. Previous ocular surgery and topical corticosteroid use, in particular, were associated with poorer visual outcomes. Many cases of severe keratitis might be avoided, or their severity reduced, by appropriate education of patients and ophthalmologists.

British Journal of Ophthalmology, 2002

C onsiderable debate still surrounds the best management of hypermetropia and to explore the opti... more C onsiderable debate still surrounds the best management of hypermetropia and to explore the options in this communication a hypothetical patient is considered at two different ages with identical refraction. Four experienced ophthalmic surgeons (CMcG, TK, ML, and AB) who have undertaken cornea and refractive surgery fellowships and have a combined experience of more than 10 000 refractive surgical procedures were asked to consider the best options for this hypothetical subject, aided by contributions from two fellows (SO, IC).

Cornea, 2011

Purpose: To identify potential donor, recipient, surgical, and postoperative factors that may inf... more Purpose: To identify potential donor, recipient, surgical, and postoperative factors that may influence survival and visual outcome of penetrating keratoplasty (PKP).