Page 112 - The Indian Optician Digital Edition November-December 2021
P. 112
CASE STUDY
VISUAL OUTCOMES AFTER
IMPLANTATION OF BINOCULAR
TORIC IOL IN ASTIGMATIC EYE
ataract, or clouding of the crystalline lens in the eye, is
presently the foremost form of visual impairment in the
Cbiosphere. Surgery is required to remove cataracts as it
is the utmost communal surgical procedure in the developed
world, undertaken by ophthalmologists. The demand for
cataract extraction and intraocular lens (IOL) implantation has
grown due to enhancements in the healthcare establishment,
which has increased life expectancy (Foster, 2000). In addition,
visual expectation and task demands are increasing within
the older population, particularly with the demands of mobile
communication. Since the initiation of intraocular lenses (IOLs) in
FORAM HINDOCHA the 1950s, designs have advanced to optimise the spherical power
OPTOMETRIST of the eye for distance vision. The designs also aim at achieving
SHREE BHARATIMAIYA spectacle independence through correction of astigmatism and
COLLEGE OF OPTOMETRY & by increasing the range of clear focus in the presbyopic eye.
PHYSIOTHERAPY, SURAT
MATERIAL AND METHODOLOGY
It was a participatory, multidisciplinary, and observational study
conducted at Keshvi Eye Hospital in Surat. The study assesses
SINCE THE INITIATION the predictability and stability of bilateral toric intraocular lens
OF INTRAOCULAR (IOL) implantation in the case of cataracts with pre-existing
LENSES (IOLS) IN astigmatism. In the present study, Preoperative Assessment
THE 1950S, DESIGNS includes the patient’s demographic data, detailed history, a
HAVE ADVANCED complete structured 10-item questionnaire, general examination
TO OPTIMISE THE of the ocular adnexa, intraocular pressure, visual Acuity, K reading
SPHERICAL POWER OF and IOL power, calculated with IOL Master and Ascan. For each
THE EYE FOR DISTANCE eye, the relevant pre-operative assessment parameters, including
VISION. THE DESIGNS flat and steep K values and the axis of each, was entered into an
ENABLE CORRECTION online toric IOL calculator to determine the axis placement of the
OF ASTIGMATISM BY IOL and the appropriate IOL model.
INCREASING THE RANGE During the preoperative assessment, initial markings were
OF CLEAR FOCUS IN THE made with the patient sitting up to avoid cyclorotation. The eye
PRESBYOPIC EYE was marked at 0 degrees and 180 degrees while using a slit-lamp
which is equipped with an angle-measuring reticule eyepiece.
| NOV-DEC 2021 | 108 CASE STUDY
