Practice styles and preferences of ASCRS members--1989 survey

Practice styles and preferences of ASCRS members--2003 survey

A survey of the members of the American Society of Cataract and Refractive Surgery (ASCRS) with a United States ZIP code was performed in July 2003. Approximately 15.5% (985) of the 6350 questionnaires were returned for analysis. Three main profile questions were used in the cross-tabulation: age of the respondent, geographic location, and volume of cataract surgery per month. The refractive surgical questions were cross-tabulated for the volume of laser in situ keratomileusis. Results of the survey were compared with those in previous surveys of ASCRS members.

Practice styles and preferences of ASCRS members--2002 survey

A survey of the practice styles and preferences of members of the American Society of Cataract and Refractive Surgery (ASCRS) with a United States ZIP code was performed in August 2002. Approximately 18% (1056) of the 5816 questionnaires mailed were returned. Three profile questions were used to cross-tabulate: age of the respondent, geographic location, and volume of cataract surgery per month. The refractive surgical questions were cross-tabulated for the volume of laser in situ keratomileusis (LASIK). Data in this survey were compared with those in previous surveys of ASCRS members.

Practice styles and preferences of ASCRS members--2001 survey

A survey of the practice styles and preferences of members of the American Society of Cataract and Refractive Surgery (ASCRS) with a United States ZIP code was performed in August 2001. Approximately 20% (1130) of the 5686 questionnaires mailed were returned before the November cutoff date. The response rate was undoubtedly negatively affected by the September 11 attack on the World Trade Center in New York. Three profile questions were used to cross-tabulate: age of the ophthalmologist, geographic location, and volume of cataract surgery per month. Data in this survey were compared with those in previous surveys of ASCRS members.

Practice styles and preferences of ASCRS members--2000 survey. American Society of Cataract and Refractive Surgery

A survey of the practice styles and preferences of members of the American Society of Cataract and Refractive Surgery with a United States ZIP code was performed in August 2000. Approximately 26% (1400) of 5342 questionnaires mailed were returned prior to the november cutoff date. Three profile questions were used to cross-tabulate: age of the ophthalmologist, geographic location, and volume of cataract surgery per month. Current data were compared with data in previous surveys.

Practice styles and preferences of ASCRS members--1999 survey

A survey of the practice styles and preferences of members of the American Society of Cataract and Refractive Surgery with United States ZIP codes was performed in September 1999. Approximately 27% (1342) of 4932 questionnaires mailed were returned before the November cutoff. Three profile questions were used to cross-tabulate: age of the opthalmologist, geographic location, and volume of cataract surgery per month. Current data were compared with data of previous surveys.

Practice styles and preferences of ASCRS members--1997 survey

A survey of the practice styles and preferences of members of the American Society of Cataract and Refractive Surgery with a United States ZIP code was performed in September 1997. Approximately 29% (1441) of the 5000 questionnaires mailed were returned by the November cut-off date. Three main profile questions were used to cross-tabulate data: age of the ophthalmologist, geographic location, and volume of cataract surgery per month. Current data were compared with data in previous annual surveys.

Practice styles and preferences of ASCRS members--1996 survey

A survey of the practice styles and preferences of members of the American Society of Cataract and Refractive Surgery with a United States ZIP code was performed in September 1996. Approximately 26% (1440) of the 5520 questionnaires mailed were returned by the November cutoff date. Three main profile questions were used to cross-tabulate data: age of the ophthalmologist, geographic location, and volume of cataract surgery per month. Current data were compared with data in previous annual surveys.

Practice styles and preferences of ASCRS members--1995 survey

A survey of the practice styles and preferences of the 1995 members of the American Society of Cataract and Refractive Surgery with a U.S. ZIP code was performed in September 1995. Approximately 27% (1500) of the 5500 questionnaires mailed were returned by the December cutoff date. Four main profile questions were used to cross-tabulate data: age of the ophthalmologist, geographic location, volume of cataract surgery per month, and volume of refractive surgery per month. Current data were compared with data in previous annual surveys.

Practice styles and preferences of ASCRS members--1994 survey

A survey of the practice styles and preferences of the 1994 members of the American Society of Cataract and Refractive Surgery who had a U.S. ZIP code was performed in September 1994. Approximately 32% (1569) of the 4849 questionnaires mailed out were returned by the November cutoff date. Four main profile questions were used to cross-tabulate: age of the ophthalmologist, geographic location, volume of cataract surgery per month, and volume of refractive surgery per month. This report also compared the data with previously published surveys.

Practice styles and preferences of ASCRS members--1993 survey

A survey of the practice styles and preferences of the 1993 ASCRS members with a U.S. ZIP code was performed in September 1993. Approximately 42% (1,786) of the 4,292 questionnaires sent out were returned prior to the December cut-off date. Three main profile questions were used to cross-tabulate: the age of the ophthalmologist, the geographic location, and the volume of cataract surgery per month. This report compares the data with previously published surveys of ASCRS members.

The Hoffer Q formula: a comparison of theoretic and regression formulas

A new formula, the Hoffer Q, was developed to predict the pseudophakic anterior chamber depth (ACD) for theoretic intraocular lens (IOL) power formulas. It relies on a personalized ACD, axial length, and corneal curvature. In 180 eyes, the Q formula proved more accurate than those using a constant ACD (P < .0001) and equal (P = .63) to those using the actual postoperative measured ACD (which is not possible clinically). In 450 eyes of one style IOL implanted by one surgeon, the Hoffer Q formula was equal to the Holladay (P = .65) and SRK/T (P = .63) and more accurate than the SRK (P < .0001) and SRK II (P = .004) regression formulas using optimized personalization constants. The Hoffer Q formula may be clinically more accurate than the Holladay and SRK/T formulas in eyes shorter than 22.0 mm. Even the original nonpersonalized constant ACD Hoffer formula compared with SRK I (using the most valid possible optimized personal A-constant) has a better mean absolute error (0.56 versus 0.59) and a significantly better range of IOL prediction error (3.44 diopters [D] versus 7.31 D). The range of error of the Hoffer Q formula (3.59 D) was half that of SRK I (7.31 D). The highest IOL power errors in the 450 eyes were in the SRK II (3.14 D) and SRK I (6.14 D); the power error was 2.08 D using the Hoffer Q formula. The series using overall personalized ACD was more accurate than using an axial length subgroup personalized ACD in each axial length subgroup. The results strongly support replacing regression formulas with third-generation personalized theoretic formulas and carefully evaluating the Holladay, SRK/T, and Hoffer Q formulas.

Practice styles and preferences of ASCRS members--1992 survey. American Society of Cataract and Refractive Surgeons

A survey of the practice styles and preferences of the 1992 ASCRS members with a U.S. ZIP code was performed in September 1992. Approximately 38% (1,374) of the 3,582 questionnaires sent out were returned prior to the December cut-off date. Three main profile questions were used to cross-tabulate: the age of the ophthalmologist, the geographic location, and the volume of cataract surgery per month. This report compares the data with previously published surveys of ASCRS members.

Practice styles and preferences of ASCRS members--1991 survey. American Society of Cataract and Refractive Surgery

A survey of the practice styles and preferences of 1991 ASCRS members with a U.S. zip code was performed in August 1991. Approximately 3,935 questionnaires were sent and approximately 40% (1,574) were returned after two months. Three main profile questions were used to cross-analyze the results: the age of the ophthalmologist, the volume of cataract surgery per month, and the geographic location. This report also compared the data with previously published surveys of the ASCRS and the Academy memberships.

An improved technique for management of dislocated posterior chamber implants

Many techniques for repositioning dislocated posterior chamber implants described in the recent literature involve intricate intraocular manipulation of a needle or other sharp instrument. The author describes an improved sulcus fixation technique, which combines the best features of external and internal approaches. Its main features involve temporary externalization of the haptics for easy and secured placement of suture knots, and subsequent reinternalization of the same haptics through horizontal sclerotomies directly external to the ciliary sulcus for precise fixation of the dislocated posterior chamber implant with consistency. Between May 1989 and December 1990, this technique was successfully used for posterior chamber intraocular lens repositioning in 12 cases. The main advantages of this technique include: (1) easy suture placement, (2) less chance of suture slippage with the secured knots, and (3) avoidance of difficult intraocular maneuvers and possible tissue injury. This improved technique expedites the process of posterior chamber implant repositioning.

Practice styles and preferences of ASCRS members--1990 survey

A survey of the practice styles and preferences of 1990 ASCRS members with a U.S. zip code was performed in September 1990. Approximately 3,620 questionnaires were sent and 45% (1,625) were returned prior to the cut-off date. Three main profile questions were used to cross-analyze the results: the age of the ophthalmologist, the volume of cataract surgery per month, and the geographic location. This report also compared the data with previously published surveys of the ASCRS membership.