diff --git a/app/Database/Migrations/2026-03-01-000001_AddOpdPerformanceIndexes.php b/app/Database/Migrations/2026-03-01-000001_AddOpdPerformanceIndexes.php
new file mode 100644
index 0000000..fbde649
--- /dev/null
+++ b/app/Database/Migrations/2026-03-01-000001_AddOpdPerformanceIndexes.php
@@ -0,0 +1,101 @@
+<?php
+
+namespace App\Database\Migrations;
+
+use CodeIgniter\Database\Migration;
+
+class AddOpdPerformanceIndexes extends Migration
+{
+    private function tableExists(string $table): bool
+    {
+        $rows = $this->db->query('SHOW TABLES LIKE ?', [$table])->getResultArray();
+        return ! empty($rows);
+    }
+
+    private function fieldExists(string $table, string $field): bool
+    {
+        if (! $this->tableExists($table)) {
+            return false;
+        }
+
+        $rows = $this->db->query('SHOW COLUMNS FROM `' . $table . '` LIKE ?', [$field])->getResultArray();
+        return ! empty($rows);
+    }
+
+    private function indexExists(string $table, string $indexName): bool
+    {
+        if (! $this->tableExists($table)) {
+            return false;
+        }
+
+        $rows = $this->db->query('SHOW INDEX FROM `' . $table . '` WHERE Key_name = ?', [$indexName])->getResultArray();
+
+        return ! empty($rows);
+    }
+
+    private function addIndexIfMissing(string $table, string $indexName, string $columns): void
+    {
+        if (! $this->tableExists($table) || $this->indexExists($table, $indexName)) {
+            return;
+        }
+
+        $this->db->query('ALTER TABLE `' . $table . '` ADD INDEX `' . $indexName . '` (' . $columns . ')');
+    }
+
+    public function up(): void
+    {
+        if ($this->tableExists('opd_master')) {
+            if ($this->fieldExists('opd_master', 'apointment_date')
+                && $this->fieldExists('opd_master', 'doc_id')
+                && $this->fieldExists('opd_master', 'opd_status')) {
+                $this->addIndexIfMissing('opd_master', 'idx_opd_master_date_doc_status', '`apointment_date`,`doc_id`,`opd_status`');
+            }
+
+            if ($this->fieldExists('opd_master', 'doc_id')
+                && $this->fieldExists('opd_master', 'apointment_date')) {
+                $this->addIndexIfMissing('opd_master', 'idx_opd_master_doc_date', '`doc_id`,`apointment_date`');
+            }
+
+            if ($this->fieldExists('opd_master', 'opd_id')) {
+                $this->addIndexIfMissing('opd_master', 'idx_opd_master_opd_id', '`opd_id`');
+            }
+        }
+
+        if ($this->tableExists('opd_prescription')) {
+            if ($this->fieldExists('opd_prescription', 'opd_id')) {
+                $this->addIndexIfMissing('opd_prescription', 'idx_opd_prescription_opd_id', '`opd_id`');
+            }
+
+            if ($this->fieldExists('opd_prescription', 'opd_id') && $this->fieldExists('opd_prescription', 'queue_no')) {
+                $this->addIndexIfMissing('opd_prescription', 'idx_opd_prescription_opd_queue', '`opd_id`,`queue_no`');
+            }
+        }
+    }
+
+    public function down(): void
+    {
+        $drops = [
+            'opd_master' => [
+                'idx_opd_master_date_doc_status',
+                'idx_opd_master_doc_date',
+                'idx_opd_master_opd_id',
+            ],
+            'opd_prescription' => [
+                'idx_opd_prescription_opd_id',
+                'idx_opd_prescription_opd_queue',
+            ],
+        ];
+
+        foreach ($drops as $table => $indexes) {
+            if (! $this->tableExists($table)) {
+                continue;
+            }
+
+            foreach ($indexes as $index) {
+                if ($this->indexExists($table, $index)) {
+                    $this->db->query('ALTER TABLE `' . $table . '` DROP INDEX `' . $index . '`');
+                }
+            }
+        }
+    }
+}