WorldCat Identities

Tan, Donald

Works: 9 works in 11 publications in 1 language and 14 library holdings
Genres: Academic theses 
Roles: Contributor, Other, Author
Publication Timeline
Most widely held works by Donald Tan
Refractive surgery by Jayne S Weiss( Book )

3 editions published between 2008 and 2010 in English and held by 3 WorldCat member libraries worldwide

Small incision lenticule extraction (SMILE) versus laser in-situ keratomileusis (LASIK): study protocol for a randomized, non-inferiority trial by Marcus Ang( )

1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

Long-term follow-up of deep anterior lamellar keratoplasty after Descemet stripping automated endothelial keratoplasty by Matthias Fuest( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Use of multiple methods for genotyping Fusariumduring an outbreak of contact lens associated fungal keratitis in Singapore by Roland Jureen( )

1 edition published in 2008 in English and held by 2 WorldCat member libraries worldwide

Global Consensus on Keratoconus and Ectatic Diseases( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

Abstract : Background: Despite extensive knowledge regarding the diagnosis and management of keratoconus and ectatic corneal diseases, many controversies still exist. For that reason, there is a need for current guidelines for the diagnosis and management of these conditions. Purpose: This project aimed to reach consensus of ophthalmology experts from around the world regarding keratoconus and ectatic diseases, focusing on their definition, concepts, clinical management, and surgical treatments. Methods: The Delphi method was followed with 3 questionnaire rounds and was complemented with a face-to-face meeting. Thirty-six panelists were involved and allocated to 1 of 3 panels: definition/diagnosis, nonsurgical management, or surgical treatment. The level of agreement considered for consensus was two thirds. Results: Numerous agreements were generated in definitions, methods of diagnosing, and management of keratoconus and other ectatic diseases. Nonsurgical and surgical treatments for these conditions, including the use of corneal cross-linking and corneal transplantations, were presented in a stepwise approach. A flowchart describing a logical management sequence for keratoconus was created. Conclusions: This project resulted in definitions, statements, and recommendations for the diagnosis and management of keratoconus and other ectatic diseases. It also provides an insight into the current worldwide treatment of these conditions
Medical apllication of scleral contact lenses : 2 bus permeable scleral contact lenses by Donald Tan( )

in English and held by 1 WorldCat member library worldwide

Front row view : video collections of eye surgery( Visual )

1 edition published in 2006 in English and held by 1 WorldCat member library worldwide

Front Row View Series 3 includes thirty-two scientific videos across six ophthalmic subspecialties, representing a variety of practical procedures and innovative techniques. The videos on this DVD illustrate new devices, surgical techniques and clinical concepts relevant to the practicing ophthalmologist and resident. (Container)
The impact of numeric sub-branding on Singaporean Chinese consumers : a conjoint analysis by Donald Tan( Book )

1 edition published in 2006 in English and held by 1 WorldCat member library worldwide

[Truncated abstract] It has been argued that the demand for a product is largely dependent on price and quality (Dodds, Monroe & Grewal, 1991) and that it is possible to provide a global product with a universal brand, as consumers desire reliable and quality products at low prices (Levitt, 1983). As global companies extend their reach around the world and such "global" products become available world wide, it is important for marketers to understand if other factors play a significant role in consumers & rsquo; purchase processes, especially in Asia where cultural and social influences can be very different from Western societies ... Since numerology is deeply rooted in Chinese culture, the present study was undertaken to examine the impact that two important numbers (4 and 8) had on Chinese consumers & rsquo; value perceptions when used in sub-brand extensions. These numbers were chosen as Ang (1997) had noted the numbers represented "death" (4) and "prosperity & rdquo; (8) in Chinese numerology and, consequently, may have a negative or positive impact on the value Chinese consumers attach to a product. While there are many types of products available to consumers and possible juxtapositions of numbers are almost endless, the present study was restricted to examining the impact that the numbers 4 and 8 had on the value Chinese consumers attached to cars and mobile phones to ensure the study was manageable. The study was undertaken in Singapore, but it was hoped that the results could be translated to other Chinese markets so more cost-effective and efficient approaches could be developed for such markets
Cost Minimization Analysis of Precut Cornea Grafts in Descemet Stripping Automated Endothelial Keratoplasty( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Abstract : Abstract: Descemet stripping automated endothelial keratoplasty (DSAEK) is the most common corneal transplant procedure. A key step in the procedure is preparing the donor cornea for transplantation. This can be accomplished via 1 of 3 alternatives: surgeon cuts the cornea on the day of surgery, the cornea is precut ahead of time in an offsite facility by a trained technician, or a precut cornea is purchased from an eye bank. Currently, there is little evidence on the costs and effectiveness of these 3 strategies to allow healthcare providers decide upon the preferred method to prepare grafts. The aim of this study was to compare the costs and relative effectiveness of each strategy. The Singapore National Eye Centre and Singapore Eye Bank performed both precut cornea and surgeon-cut cornea transplant services between 2009 and 2013. This study included 110 subjects who received precut cornea and 140 who received surgeon-cut cornea. Clinical outcomes and surgical duration were compared across the strategies using the propensity score matching. The cost of each strategy was estimated using the microcosting and consisted of facility costs and procedural costs including surgical duration. One-way sensitivity analysis and threshold analysis were performed. The cost for DSAEK was highest for the surgeon-cut approach ($13, 965 per procedure), followed by purchasing precut corneas ($12, 659) and then setting up precutting ($12, 421). The higher procedural cost of the surgeon-cut approach was largely due to the longer duration of the procedure (surgeon-cut = 72.54 minutes, precut = 59.45 minutes, P <0.001) and the higher surgeon fees. There was no evidence of differences in clinical outcomes between grafts that were precut or surgeon-cut. Threshold analysis demonstrated that if the number of cases was below 31 a year, the strategy that yielded the lowest cost was purchasing precut cornea from eye bank. If there were more than 290 cases annually, the cheapest option would be to setup precutting facility. Our findings suggest that it is more efficient for centers that are performing a large number of cornea transplants (more than 290 cases) to set up their own facility to conduct precutting. Abstract : Supplemental Digital Content is available in the text
Audience Level
Audience Level
  Kids General Special  
Audience level: 0.82 (from 0.40 for The impact ... to 0.97 for Refractive ...)

Refractive surgery
Front row view : video collections of eye surgery
English (11)