Latar Belakang: Katarak menjadi penyebab 77,7% kasus kebutaan di Indonesia, tinggi nya prevalensi ini menunjukkan bahwa masih banyak penderita katarak yang belum menjalani tindakan operasi. Tingkat pengetahuan, sikap, dan keputusan pasien katarak terkait operasi katarak yang rendah dapat menghambat angka operasi katarak yang dilakukan di Indonesia. Oleh karena itu, penelitian ini bertujuan untuk menilai tingkat pengetahuan, sikap, dan keputusan pasien terhadap operasi katarak di Siloam Hospitals Lippo Village, Tangerang. Tujuan Penelitian: Mengetahui hubungan antara tingkat pengetahuan, sikap, dan keputusan pasien katarak di Siloam Hospitals Lippo Village Gedung B terhadap operasi katarak. Metode: Penelitian ini menggunakan desain studi cross-sectional (potong lintang). Sampel yang digunakan adalah pasien katarak yang berkunjung ke Siloam Hospitals Lippo Village Gedung B dengan jumlah minimum 60 sampel. Data yang didapatkan diolah menggunakan SPSS Statistics secara bivariat. Hasil: Dari 64 responden, didapatkan sebanyak 7 (10.9%) responden memiliki tingkat pengetahuan rendah, 4 (6.3%) memiliki sikap buruk, dan 4 (6.3%) responden tidak bersedia melakukan operasi katatak. Tingkat pengetahuan dan sikap, sikap dan perilaku, serta tingkat pengetahuan dan keputusan terhadap operasi katarak ditemukan memiliki hubungan yang signifikan dengan nilai p = 0,000 pada uji Pearson Chi-Square. Kesimpulan: Terdapat hubungan yang bermakna antara tingkat pengetahuan, sikap, dan keputusan terhadap operasi katarak. Kata Kunci: Katarak, operasi katarak, tingkat pengetahuan, sikap, keputusan, pasien katarak. Referensi: 2007-2023 / Background: Cataracts account for 77.7% of blindness cases in Indonesia, indicating that many cataract patients have not undergone surgery. Low levels of knowledge, attitude, and decision-making among cataract patients regarding cataract surgery may hinder the number of cataract surgeries performed in Indonesia. Therefore, this study aimed to assess the level of knowledge, attitude, and decision-making of cataract patients regarding cataract surgery at Siloam Hospitals Lippo Village, Tangerang. Objective: To determine the relationship between the level of knowledge, attitude, and decision to undergo cataract surgery among cataract patients at Siloam Hospitals Lippo Village Building B. Methods: This study used a cross-sectional design. The sample consisted of cataract patients visiting Siloam Hospitals Lippo Village Building B with a minimum sample size of 60. The data obtained was analyzed using SPSS Statistics bivariate analysis. Results: Of the 64 respondents, 7 (10.9%) had low knowledge, 4 (6.3%) had a negative attitude, and 4 (6.3%) were unwilling to undergo cataract surgery. There was a significant relationship between knowledge and attitude, attitude and decision, and knowledge and decision to undergo cataract surgery with a p-value of 0.000 on the Pearson Chi-Square test. Conclusion: There is a significant relationship between the level of knowledge, attitude, and decision to undergo cataract surgery. Keywords: Cataract, cataract surgery, knowledge level, attitude, decision, cataract patients. References: 2007-2023