HUD Surgical Guidance for Toric Alignment

Exclusion Criteria

• •Ocular comorbidity likely to impair postoperative visual acuities, or
• •History of ocular trauma or zonular instability, or
• •Previous refractive surgery, or
• •Irregular corneal astigmatism or keratoconus, or
• •Patients with physical or intellectual disabilities that may prevent reliable fixation or comprehension (e.g. Down's Syndrome, Parkinson's Disease), or
• •Patients with unreliable biometry measurements, or
• •Severe dry eye disease or ocular surface disease.