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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
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Modified visual field test for ptosis surgery (Leicester Peripheral Field Test).

S F Ho1, A Morawski, R Sampath

  • 1Department of Ophthalmology, Leicester Royal Infirmary, Leicester, UK. s_ho2@yahoo.com

Eye (London, England)
|January 22, 2011
PubMed
Summary
This summary is machine-generated.

A new visual field test effectively assesses functional vision loss from ptosis and dermatochalasis. Surgery significantly improves visual field defects, supporting these procedures as medically necessary treatments.

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Area of Science:

  • Ophthalmology
  • Ophthalmic Surgery
  • Visual Field Testing

Background:

  • Lack of consensus exists regarding reimbursement for ptosis surgery and upper lid blepharoplasty, often deemed cosmetic.
  • Standardized photography is costly and difficult; routine 24-2 visual fields lack sensitivity for superior field defects.
  • Ptosis and dermatochalasis can cause significant functional visual impairment.

Purpose of the Study:

  • To introduce a modified visual field test for assessing functional disability in ptosis and dermatochalasis.
  • To evaluate the effectiveness of surgical intervention in improving visual fields for these conditions.

Main Methods:

  • Prospective study of 97 patients (194 eyes) undergoing ptosis or dermatochalasis surgery (Jan 2006-Dec 2009).
  • Patients performed a modified visual field test pre- and post-operatively.
  • Procedures included aponeurotic repair and/or blepharoplasty.

Main Results:

  • The modified test demonstrated 98.8% sensitivity in detecting ptosis.
  • 84.2% of patients with ptosis surgery showed improved points seen, and 81% improved visual field height.
  • 90.9% of patients with blepharoplasty alone showed improved points seen, and 80.6% improved visual field height.

Conclusions:

  • The modified visual field assessment is a rapid and simple tool for evaluating ptosis and dermatochalasis-related disability.
  • Surgical correction significantly improves visual field deficits, confirming a functional basis for these conditions.
  • Findings support classifying ptosis and dermatochalasis surgery as functional rather than purely cosmetic interventions.