J Korean Ophthalmol Soc.  2002 Nov;43(11):2241-2245.

Reliability of Refractive Measurement by Hand-held Autorefractor

• La TY
• Oh JR

Abstract

PURPOSE: We tried to evaluate the reliablility of refractive measurement by hand-held autorefractor (HHAR).
METHODS
Ninety patients (180 eyes) with simple refractive error were divided into three groups (30 patients each) according to their ages. Group I is under 6 years old; group II, from 7 to 15 years old; and group 3, over 16 years old. Under cycloplegics, three measuring methods of refraction using table top autorefractor (Model 599, Zeiss Humphrey, USA), hand-held autorefractor (Retinomax K-plus, Nikon, Japan) and skiascope (Heine beta 200, Germany) were performed and we compared each spherical and cylindrical value in 3 groups.
RESULTS
There was no significant difference in both spherical and cylindrical value between HH-AR and skiascope in all groups (PI, sph=0.579, PI, cyl=0.708, PII, sph=0.801, PII , cyl=0.730, PIII , sph=0.816, PIII, cyl=0.754) . But there was significant difference in both spherical and cylindrical value between table top autorefractor and skiascope in group I (PI,sph=0.019, PI,cyl=0.030, PII,sph=0.405, PII,cyl=0.392, PIII,sph=0.876, PIII,cyl=0.747).
CONCLUSIONS
We believe that hand-held autorefractor can be a useful instrument to measure refractive power without serious error, especially in patients who have difficulty with table top autorefractor.

Keyword

Hand-held autorefractor; Table top autorefractor; Uncooperative patients

MeSH Terms

Adolescent
Child
Humans
Mydriatics
Refractive Errors
Mydriatics