diff --git a/packages/effect-fc/src/Lens.ts b/packages/effect-fc/src/Lens.ts
index e5e754e..5a8596f 100644
--- a/packages/effect-fc/src/Lens.ts
+++ b/packages/effect-fc/src/Lens.ts
@@ -1,4 +1,4 @@
-import { Array, Chunk, Effect, Function, Pipeable, Predicate, Readable, Stream, Subscribable, SubscriptionRef } from "effect"
+import { Array, Chunk, Effect, Function, Pipeable, Predicate, Readable, Stream, Subscribable, type SubscriptionRef } from "effect"
 import type { NoSuchElementException } from "effect/Cause"
 
 
@@ -139,7 +139,7 @@ export const mapEffect: {
     )),
 }))
 
-export const mapStructField: {
+export const mapField: {
     <A extends object, K extends keyof A, ER, EW, RR, RW>(
         self: Lens<A, ER, EW, RR, RW>,
         key: K,
@@ -287,24 +287,3 @@ export const updateAndGetEffect: {
         next => Effect.succeed([next, next] as const),
     )),
 )
-
-
-Effect.gen(function*() {
-    const ref = yield* SubscriptionRef.make({
-        values: [13, 69, 1488] as readonly number[]
-    } as const)
-
-    const myValueLens = ref.pipe(
-        fromSubscriptionRef,
-        mapStructField("values"),
-        mapArrayAt(1),
-    )
-
-    const myValueLens2 = mapArrayAt(mapStructField(fromSubscriptionRef(ref), "values"), 1)
-
-    console.log(yield* ref.get, yield* myValueLens.get)
-    yield* set(myValueLens, 22)
-    console.log(yield* ref.get, yield* myValueLens.get)
-}).pipe(
-    Effect.runSync
-)