diff --git a/DESCRIPTION b/DESCRIPTION
index b88a32a..cd8d0e2 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -29,7 +29,7 @@ Encoding: UTF-8
 Language: en-US
 LazyData: true
 Roxygen: list(markdown = TRUE)
-RoxygenNote: 7.2.3
+RoxygenNote: 7.3.1
 Depends: R (>= 3.5)
 Imports:
     admiral,
diff --git a/NEWS.md b/NEWS.md
index 7b3541e..e76de7a 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,12 @@
+# admiralophtha 1.1.0
+
+## Updates to Functions
+
+- The following function arguments of `derive_var_afeye()` are entering the next phase of the deprecation process (#223): 
+
+  * The argument `dataset_occ`
+  * The argument `lat_vals`
+
 # admiralophtha 1.0.0
 
 ## Updates to Templates
diff --git a/R/derive_var_afeye.R b/R/derive_var_afeye.R
index 3b627a0..2253b0a 100644
--- a/R/derive_var_afeye.R
+++ b/R/derive_var_afeye.R
@@ -63,34 +63,30 @@
 derive_var_afeye <- function(dataset, dataset_occ, loc_var, lat_var, lat_vals, loc_vals = "EYE") {
   # BEGIN DEPRECATION
   if (!missing(lat_vals)) {
-    deprecate_warn(
-      "1.0.0",
+    deprecate_stop(
+      "1.1.0",
       "derive_var_afeye(lat_vals = )",
       details = "Please ensure your laterality values are from the
       set `c('LEFT', 'RIGHT', 'BILATERAL')`"
     )
-  } else {
-    lat_vals <- c("LEFT", "RIGHT", "BILATERAL")
   }
 
   if (!missing(dataset_occ)) {
-    deprecate_warn(
-      "1.0.0",
+    deprecate_stop(
+      "1.1.0",
       "derive_var_afeye(dataset_occ = )",
       "derive_var_afeye(dataset = )"
     )
-    dataset <- dataset_occ
   }
 
   # END DEPRECATION
 
   seye_vals <- c("LEFT", "RIGHT", "BILATERAL")
+  lat_vals <- c("LEFT", "RIGHT", "BILATERAL")
 
   loc_var <- assert_symbol(enexpr(loc_var))
   lat_var <- assert_symbol(enexpr(lat_var))
 
-  assert_character_vector(loc_vals)
-  assert_character_vector(seye_vals)
   assert_character_vector(lat_vals)
 
   assert_data_frame(dataset, required_vars = expr_c(
diff --git a/tests/testthat/test-derive_var_afeye.R b/tests/testthat/test-derive_var_afeye.R
index 5cbb18a..5c0c65b 100644
--- a/tests/testthat/test-derive_var_afeye.R
+++ b/tests/testthat/test-derive_var_afeye.R
@@ -68,7 +68,7 @@ test_that("derive_var_afeye Test 3: Deprecation of dataset_occ", {
     "XXX001", "P01", "RIGHT", "", "", NA_character_,
   )
 
-  expect_warning(
+  expect_error(
     actual_output3 <- expected_output3 %>%
       select(-AFEYE) %>%
       derive_var_afeye(
@@ -77,13 +77,7 @@ test_that("derive_var_afeye Test 3: Deprecation of dataset_occ", {
         loc_var = AELOC,
         lat_var = AELAT
       ),
-    class = "lifecycle_warning_deprecated"
-  )
-
-  expect_dfs_equal(
-    actual_output3,
-    expected_output3,
-    keys = c("STUDYID", "USUBJID", "AELOC", "AELAT")
+    class = "lifecycle_error_deprecated"
   )
 })
 
@@ -96,7 +90,7 @@ test_that("derive_var_afeye Test 4: Deprecation of lat_vals", {
     "XXX001", "P01", "RIGHT", "", "", NA_character_,
   )
 
-  expect_warning(
+  expect_error(
     actual_output4 <- expected_output4 %>%
       select(-AFEYE) %>%
       derive_var_afeye(
@@ -104,12 +98,6 @@ test_that("derive_var_afeye Test 4: Deprecation of lat_vals", {
         lat_var = AELAT,
         lat_vals = c("LEFT", "RIGHT", "BILATERAL")
       ),
-    class = "lifecycle_warning_deprecated"
-  )
-
-  expect_dfs_equal(
-    actual_output4,
-    expected_output4,
-    keys = c("STUDYID", "USUBJID", "AELOC", "AELAT")
+    class = "lifecycle_error_deprecated"
   )
 })