Posters

Oblate lenses on high myopic eyes

Poster Details

First Author: S.Jouahri MOROCCO

Co Author(s): F. Boudguig   A. Ennejjar   A. Amazouzi   L. Cherkaoui           

Abstract Details

Purpose:

Discuss the gain brought by using oblate lenses on high myopic eyes to enhance and optimize optical and physiological outcomes.

Setting:

Descriptive study carried out on 1 case, within ophthalmology department A - Hospital Specialties Rabat.

Methods:

This study is about a patient of 14 years old, with high myopia. Her corrective acuity is 5/10 in the right eye and 6/10 in the left eye. Her refraction is -11.75 (-1.50 to 175) in the right eye and -8.00 (-2.25 to 165) in the left eye.

Results:

After correcting with glasses: Right eye: -11,75 (-1,50 to 175) with 5/10 in visual acuity. Left eye: -8,00 (-2,25 to 165) with 6/10 in visual acuity. After correcting with contact lenses: Right eye: 7,90/-9,75/14,6 with 7/10 in visual acuity. Left eye: 7,80/-7,75/14,6 with 8/10 in visual acuity. After correcting with oblate lenses: Right eye: 7,90 - OBL : 150 - 3,75 with 8/10 in visual acuity. Left eye : 7,80 - OBL : 110 - 3,75 with 8/10 in visual acuity. The patient was more satisfied with the use of oblate lenses: Better visual acuity and comfort, less aberrations.

Conclusions:

The central base curve of oblate lenses is flatter than its periphery : This helps to reduce the clearance over the central part of the cornea.The lens is more stable, visual acuity is improved, and oxygen delivery is less penalized. In addition, it generates relatively more minus power correction compared to a prolate lens.

Financial Disclosure:

None