Influence of Base Curve on the Fit of Soft Contact Lenses

소프트 콘택트렌즈의 피팅에서 베이스커브의 영향

Lens centration was the fitting variable that was most dependent on base curve radius. Flatter lenses tended to decenter more. A flatter contact lens will likely have to move into the periphery to reach this point of stability. In most cases, the decentration was in the superior and/or temporal direction. It was also found that comfort complains were more common with flatter lenses. The optimal fits was highest with the 8.4mm base curve lens for all three ranges fit eyes decreased as base curve radius was increased. These lenses with steeper radii lead to better centration and therefore to better fit and comfort for more patients than do thin lenses with flatter radii.

렌즈 중심잡기는 베이스 커브에 의존함을 알 수 있는데, flat한 렌는는 중심에서 더 이탈되었고, 주변부로 움직임이 크게 나타났다. 대부분의 경우 중심이탈은 위쪽 또는 귀쪽이었다. 또 더 flat한 렌즈를 장용한 환자가 장용감에 대한 불편함을 느꼈다. 세 개의 K값 영역에서 최적상태로 피팅된 상태는 베이스 커브가 8.4mm일때였으며 베이스 커브가 커짐에 따라 최적조건은 줄어들었다.