Biomaterial Database

Complications and symptoms with disposable daily wear contact lenses and conventional soft daily wear contact lenses. 1993

E C Poggio, and M B Abelson

Biostatistics and Epidemiology Group, Abt Associates, Inc., Cambridge, MA 02138.

We conducted a historical cohort study of 1,954 myopic cosmetic contact lens wearers (1,258 disposable soft daily wear lens users and 696 conventional [nondisposable] soft daily wear lens users). Our aim was to estimate the rates of complications and symptoms among patients using daily wear disposable contact lenses on a regular disposal regimen and to compare these with rates for conventional soft daily wear users. Patients were selected from five contact lens practices in Denmark. Data were abstracted from the eye care practitioners' office records for the period October 1987 through December 1989. Virtually all of the disposable lens users were on a two-week disposal regimen. Overall, the prevalence of complications was significantly lower among the daily wear disposable lens users than among the conventional soft daily wear lens users. The incidence of corneal ulcers did not differ significantly between the two study groups. As compared to conventional soft daily wear lens users, disposable daily wear lens users reported symptoms less frequently at routine scheduled visits and had a lower rate of unscheduled visits for complications and symptoms.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D003261	Contact Lenses	Lenses designed to be worn on the front surface of the eyeball. (UMDNS, 1999)	Lenses, Contact,Contact Lens,Lens, Contact
D003263	Contact Lenses, Hydrophilic	Soft, supple contact lenses made of plastic polymers which interact readily with water molecules. Many types are available, including continuous and extended-wear versions, which are gas-permeable and easily sterilized.	Lenses, Contact, Hydrophilic,Soft Contact Lenses,Hydrophilic Contact Lens,Soft Contact Lens,Contact Lens, Hydrophilic,Contact Lens, Soft,Contact Lenses, Soft,Hydrophilic Contact Lenses,Lens, Hydrophilic Contact,Lens, Soft Contact,Lenses, Hydrophilic Contact,Lenses, Soft Contact
D004209	Disposable Equipment	Apparatus, devices, or supplies intended for one-time or temporary use.	Equipment, Disposable
D005128	Eye Diseases	Diseases affecting the eye.	Eye Disorders,Eye Disease,Eye Disorder
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D015331	Cohort Studies	Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics.	Birth Cohort Studies,Birth Cohort Study,Closed Cohort Studies,Cohort Analysis,Concurrent Studies,Historical Cohort Studies,Incidence Studies,Analysis, Cohort,Cohort Studies, Closed,Cohort Studies, Historical,Studies, Closed Cohort,Studies, Concurrent,Studies, Historical Cohort,Analyses, Cohort,Closed Cohort Study,Cohort Analyses,Cohort Studies, Birth,Cohort Study,Cohort Study, Birth,Cohort Study, Closed,Cohort Study, Historical,Concurrent Study,Historical Cohort Study,Incidence Study,Studies, Birth Cohort,Studies, Cohort,Studies, Incidence,Study, Birth Cohort,Study, Closed Cohort,Study, Cohort,Study, Concurrent,Study, Historical Cohort,Study, Incidence
D015994	Incidence	The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases in the population at a given time.	Attack Rate,Cumulative Incidence,Incidence Proportion,Incidence Rate,Person-time Rate,Secondary Attack Rate,Attack Rate, Secondary,Attack Rates,Cumulative Incidences,Incidence Proportions,Incidence Rates,Incidence, Cumulative,Incidences,Person time Rate,Person-time Rates,Proportion, Incidence,Rate, Attack,Rate, Incidence,Rate, Person-time,Rate, Secondary Attack,Secondary Attack Rates